SN95 Owner's Guide #3 - Myth of the CCRM
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- Опубліковано 26 сер 2024
- Owner's Guide #3 we demystify the often maligned and misunderstood, bit of SN95 engine control, the CCRM! For those of you that might be new, it's the Constant Control Relay Module, that black box stuck next to your coolant overflow bottle.
This is the SN95 specific series you have been waiting for! No BS, just pure tech and experience, Darren is here to serve the SN95 community and help you get the most out of your 1994-1998 Mustang!
Darren's has 4 different SN95 Mustangs lined up to to show a variety of modifications and success stories.
This series will count on user interaction for from viewers just like you, so please LIKE, SHARE, and SUBSCRIBE!
Got a question you want answered, drop it in the comments below!
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The key thing about the CCRM is that it highlights how poorly designed our cars are, they really are a parts shelf special - why put the relays that control some of the cars critical functions in the most vulnerable place in the car, all together in a single unit, and in the least efficient place for the wiring where it takes the longest possible route from the engine bay, to the ccrm, into the cabin, then back to the engine bay, then back through the cabin again all the way to the back of the car!
can u find me a wiring diagram for how the wires are run please
Hello I'm trying to diagnose my friend 1994 mustang gt , the fuel pump is not getting power, it doesn't make any sound at all, we changed the pump twice, fuel pump fuse is good , I'm suspecting this part, cab I use a test light on pin number 5 to check for power to the pump?
If it checks out ok, what else should I look for?
@@mr.selfdestruct1677 what’s was it ????
This video needs more likes and views, great info and spot on
You are spot on in your assessment of these relays. They are pretty much indestructible. However in time the contacts lose there “follow”. That is the ability of the two contact surfaces to “Rub” against each other as they break connection”. This causes a tit to form on one contact and a pit to form on the other from the arc of electricity upon a set of contacts that have no follow. Latching contacts like this lead to circuits associated with that contact not being able to cut off. As an electronics technician with telephone switching our relays were accessible and a burnishing to would knock the tit of and then a spring bender to adjust the two contacts back to where “Follow” is there to prevent pitting upon release
If I'm not mistaken the little relay controls ac clutch kicking on. Great video
My AC clutch wouldn't turn on in my '98, went to the junkyard and got one and started working again. Kind of crazy how a small box can cause a number of potential issues.
Glad I seen this my ac clutch just quit working. AC was fine one day now no clutch. What size socket do you need to remove the box?
I don't remember, but what I can tell you is it's metric and more than likely an 8 or 10mm. Just go to your junkyard and find one off around your year mustang. I pulled mine off either a 97 or 98, I tend to like to get parts from the same year, because components may have changed from year to year.
You need a 11mm for the two nuts holding the ccrm bracket to the car. A 5mm socket or wrench to remove the tiny bolt from the ccrm connector.
This would be for a mustang
it might be the small relay in the corner of the box . drill out the rivets an open the ccrm an check the back of the board for burnt solder . the relay itself is cheap an a experienced phone / electronic repair shop can solder new relay in if your not to good at soldering .. but i would check fuses an everything out before looking at the ccrm . .
On some models like my 95 Mustangs GT the CCRM also controls the A/C compressor clutch. On mine everything else worked properly but the compressor clutch would not engage. After closer inspection of the CCRM I found that the connector on the module was cracked and the relay for the compressor clutch wasn’t functioning so I replaced the CCRM which corrected the issue.
Thank you for this!
Would love to see some more advice and content from you guys on SN95's. I have watched all of your videos.
I sought advice for my poorly running 95 GTS. After lengthy discussion online, they said to replace the CCRM ….
Meanwhile, the fuel pump is working fine - 35 to 39 PSI while running… I replaced the distributor, coil, TFI, plugs, and wires. Did a smoke vacuum test- no problems there ….Car is still running very badly.
I’m not sure what is causing the problems … Tomorrow, I am going to pull the ECU and check those capacitors
I've seen a number with bad solder joints. The relays themselves are good, just poorly soldered
I like that answer!
I wish your shop was closer to where I live. SN95 owner.
Thank you for these videos! I really want to buy a sn95 but I don’t know much about cars! These help out a lot ! Thanks bro!!
Me and dad collected all the older books. Wish I was there when he passed
informative, but got here looking for why my PCM (I think) has no power - maybe that's what the smaller module/relay controls. fuel pump and fan run with key on - I assume these relays are closed with no input. 95 Taurus been running great for 25 years (just turned over 100k miles). Biggest thing I learned is how great the Ford factory manual is (I need the wiring diagrams), and that it's no big deal drilling the rivets that hold the PC board on - will look for cold solder joints if comes to that (fixed several electronic modules with broken solder joints). Thanks for uploading this.
I have about 15 of them every time I go to the junkyard I get one lol. Put yours in the fender like new Newedge units.
AAD sell me two, lol.
why dont you let others who need them buy them?
Have a 98 mustang GT first the AC stopped working, then the fan, then the fuel pump... I'm fairly certain it's the CCRM because it controls all of those... the only plus side is I sold the car about a year ago and told the new buyer the problem. He just hot wired the fan then sold the car.... fast forward to yesterday when I I found the car for sale again and brought it back home!
Im having a similar issue on my 98 mark viii LSC where I have no fuel pressure and no fans. All fuses checked out and the inertia switch has continuity because I suspected it first. I know it's not good for the 4.6 but I removed the air cleaner and shot a small amount of starter fluid in the throttle body. It starts and sputters but does run for a few seconds. I've also replaced the fuel filter and found someone from the previous owner jacked it up under the fuel line(s - return and evap). I have scabbed in new 5/16 vinyl from before the pinch, up the wheel well and onto the filter. Yes, it was a huge pia but I got to use my flaring set and heat gun. I'm about to remove the rest of the fender liner and check out the CCRM/VCRM but, as a hardware Engineer, I refuse to replace the entire unit until I screw this one up beyond repair. I have all the components to essentially rebuild the whole thing in my collection as I type this.
I know this a late comment but before I bought this or thought of taking it out I checked the connector going to the radiator fan. The points on the connector tend to corrode or loosen over time. So move it around and see if the fan cuts in and out.
Yo Dude, you fucking rock!!! Love you for sharing this info,. I have no fuel purge in my 97mustang 6cylinder. Now I need to get it fixed. But you gave me clarity on my issue big time.
I have a 95 gt and my car was not shifting out of overdrive, stalling out, getting horrible fuel mileage. My problem was the ECU computer which controls the motor and transmission according to Ford. I thought it was my distributor but I was wrong. But what your car was doing sounds like a distributor issue. Good video
Can you explain your issues more in depth. I also have a 95 gt auto and am going through gas very bad and also the cars surges if not stalls when i shift to reverse or drive when the car is up to temp. Please and thank you.
Very well presented my friend. You have a new subscriber!
Thank you very much, subscriptions are great way of letting us know you are enjoying the content. - Darren
So when you mention checking for voltage output from the CCRM, how do you actually go about doing that? I've checked for voltage output coming from the fuel pump fuse in the power distribution box, and got no voltage. I also noticed the fuse slot for the Fan was getting 0 voltage. My AC system was not working either. Is there somewhere else I can do this check?
I think a lot most of the times all electrical connections need to be separated and cleaned out and snapped back together but they are so small so I am looking for a very small cleaning kit and I will separate all the connectors on my 04 mustang GT automatic dark shadow gray and clean them and snap them back together same as cleaning the battery cables
My car was running and suddenly died. (no fuel priming sound like usual)
Fuel pump works when connected directly to battery.
Fuse is good.
I will be looking for ground issues and possibly open the CCRM(even though i still hear it click)
Take a look at the diagrams in this link on our website and check for 12V power on pin#5 with the Key on:
gtconcepts.ca/main/index.php/2018/12/03/mustang-ccrm-all-you-need-to-know-with-diagrams/
Hopefully this gets you on the path to a repair! - Darren
check the vacuum hoses that may be rotten and need to be replace i had same problem and it was a hose that goes form outside to inside top of engine very unreachable and needs to remove top engine to reach them if you have a mustang 94 and up ,,,hope this help you ,, because vacuum hoses can give you a real headache for just a simple thing so small
@@janatono it was a major ground short. I didnt want to tear apart the car to find it so i hardwired it .
UnTamed Mustang I have experienced a short in replaced stereo when pressing any button. I’m considering now that may have contributed to a damaged CCRM, if it turns out I have a grounding problem in the electrical system! I have recently had to replace driver side window motor and door lock actuator. I need to run down the cause before anything else is burned up!
I've got a lot of red flags at my ccrm module, 1 my fan will constantly with the car not running and the key in the on position, 2 my anti theft light is flashing, 3 my this happens I get a crank no start as if There's no power going my fuel pump. Towed it home and it started right up and all other problems went away for. Now I don't drive that car till I figure this out.
I would love to have that book I have a 94 5.0 that I'm rebuilding and iv had these issues
I'm actually having a similar issue with my GT not starting and thats actually how i got here, and after watching now i want to know how you fixed your issue with the bogging down and stalling out. I was actually about to go out tomorrow and buy one to replace it, but now im not so certain that it would be a good idea since the issue with your car sounds quite similar to mine.
Like he said, they either work or they don't. The 3 relays control the fan, fuel pump and AC Compressor Clutch; if your fan turns on (high and low speed), your AC comes on, and you have good fuel pressure, the CCRM is not your issue.
I don't have any power at all to my fan , the car will get hot setting at idle without the fan ever coming on. Do you have any suggestions ?
I have a P0193 code and I was curious if the CCRM was the problem. But I wouldn't think that it would cause a high fuel pressure condition. The high fuel pressure is an intermittent problem though. According to my scantool info, it's most likely a bad FRPS. What say you? 2002 Mustang GT. Besides, it looks like the CCRM is discontinued.
This could be a handy setup for someone to swap in a homebrew EFI setup.
My fuel pump and fan go on and stay on turning key but not to start changed ground wire fixed it tried it again and it was back to the same
Good work
My ac clutch relay on my 2004 mustang i replaced with a new relay poped/blown after only two weeks of use i cannot find what causes it to blow so i can fix my ac clutch relay more permanently then 2 weeks.
My AC wasn't working and it wound up being the Ccrm.. I've had a lot of SN95s and this was a first time
Sounds like you got it figured out though! This video is mainly a myth debunker to help those who are chasing ignition problems and are misled to the CCRM by internet lore. Thanks for commenting and glad to hear you're keeping another SN95 on the road! - Darren
What were the other causes for your ac not kicking on
My issue with intermittent fuel delivery in my 95" cobra , was the "PICK-UP MODULE" . inside the bottom floor of my distributor .... went defective..
i noticed a smaller relay , behind the larger 3 . you didn't mention it.
Love the Canadian accent. Reminds me of the good ol trailer park boys.
I’m getting code 212&556 on my 95 gt-5.0l
Good series man
Thanks! We are working to get out more content as we undergo an editing hardware upgrade. - Darren
I came here because the only thing I haven't replaced is the CCRM, my 1995 Mustang 3.8 is starting, idles, runs shaky at 1200 rpm, won't rev up unless you floor it.
Checked and repaired vacuum leaks, spark plugs, cable, MAF sensor, TPS, fuel pump and filter, I literally replaced everything the internet came up with.
Weird thing is : no codes, no CEL ???
Anybody any idea ?? Thanks !
I bet thats my problem my a/c stuck on defrost and the clutch wont go on thanks would look into that !
Hey I'm from Edmonton, im 351w swapping my 95 convertible. Been watching your videos then you said about and I was like he's Canadian then you showed the invoice and I had to laugh
Hi Dean! Cool to hear from another YEG area SN95 owner, thanks for watching and commenting! -Darren
@@GrandTouringConcepts Happy New Years Darren
Hey boys I'm from down the road in lloydminster.got a 95 gt I'm doing here.just rewatching some videos
Very informative breakdown of the CCRM., having trouble finding information on a 2000 v6 mustang, really appreciate any help finding wiring diagrams with plug & pin identification of the instrument cluster and in and out of the PCM., thanks, hope you can help, have tried searching forums and have gotten no help.
Luckily, the factory service manuals are available from a number of sources online as a .pdf Run a quick google for 2000 Mustang FSM and you should be able to get a digital copy for very little cash. The FSM is the real treasure for doing electrical, and combined with the EVTM (google it) there is very little that cannot be solved. Best of Luck, and Thanks for watching and commenting! - Darren
I have a no mustang I have a 1995 mercury sable I’ve been trying to figure out why my fan and ac won’t work it has a 3.8 Essex in it
As if they don't have a more convenient place to install that part on the car, just don't want people working on the car themselves. I would relocate it so next time you want to check it it's right there under the hood.
My CCRM relays whin really loud and no fuel at all. So I think I’ll change it
fans didnt work but my fuel was fine opened up ccrm then discovered that the board and resistors for the fan was burnt
I ran into this problem about a year ago. My fan stopped spinning all of a sudden. So, I changed both temp sensors and it didn't worked of course. So, I started digging around and found out about the ccrm problem. I was tight on money at the time so I tested the fan and the fan was good. I straight wired it to a toggle switch and for the most part it's still working. What I'm wondering now is if it's only working on low speed. I live in Texas and it gets pretty hot. Just today, my temp gauge went up to the A in normal but to me, that's too close for comfort in the overheating department. How do I go by testing the fan if it's only working on low speed?
Im in the exact same boat right now in my 2003 v6 mustang, I cannot for the life of me figure out why my fan won’t come on. I’ve replaced the sensors, checked the fuses and tested the fan, it runs perfect. I wish I could check if its the ccrm before dropping $200 replacing it
I got a 97 cobra that I just can’t get the fans to stay on. I directly got wired the low speed wire to the battery and still it won’t turn on I’m completely lost not sure why or if replacing my ccrm will help that if my wiring it straight to my battery isn’t working
Tankyou so much buddy 👍🏻 you gotit👍🏻💯
i took the engine cooling responsibility away from the car and added a fan controller. the computer wanted to turn the fan on at like 221 degrees if i remember correctly...that was way too high for my mods and the area i live in
I don’t know if anyone comments on here anymore, I have a 94 302 Mustang and currently the car runs HOT. I’ve replaced the fan but it seems that wasn’t the problem(High power fan kicks on but doesn’t drop passed the R in the word Normal on temp gauge). Code 556 (fuel pump relay) pops up hence why I’m here. My mechanic says my timing cover gasket is bad and that’s where I’m leaking.. does that sound reasonable? I’m not sure if anyone has had a similar problem please comment! Thanks
After all of a sudden I got it to crank and turn over but the car turns on and intimately dies off . It stays on if I push the accelerator only I let go of accelerator and dies . Checked under dash fuses and ok except like 2 or 3 of them I put new ones on . No I checked pins going into the CCRM AND ONLY LIKE 8 OF THEM HAVE POWER THE REST DONT . HELP PLS ?
I know this is suppper late but mine on my 2002 V6 mustang is making an extremely load buzzing noise, I’m 99% sure it is coming from the CCRM. Haven’t found much else on this. Checked all fuses and they are all good but I’m also not getting spark to my plugs.
Does anyone have any ideas on what this could be?
Huh, treasure hunting in the dumpster..... my man!!! Lol
Now that's some Mustang dedication!
@@fwh79FOXR6 42
Good video! I have a 1994 mustang GT that sometimes has a long crank, no start issue. Sometimes car will crank but no start, usually after several attempts at cranking car will start and run fine - any ideas?
Would anyone know what’s the letter mean like Y, B
Does a bad ccrm prevents a car from being sluggish? I cannot done a burn out, basically. I had smoke from exhaust, delay start ups, and sounds coming from engine bay and feul pump area.
Those symptoms are not something usually related to a CCRM. This sounds like diagnostics into the ignition and fuel system are required. A general tune up and/or compression testing is a great place to start. Thanks for watching and commenting! - Darren
I got one of those in my parts bin from when i had a 94 gt
Will you sale it me?
@@dizzydamemo Let me check if i still have it,ill get back to you shortly and dm you.
I found it,do you have an email to reach you at?
My 01 GT fan turns on immediately, even when the engine is cold. It will turn on, turn off, turn on, turn off and so forth. I replaced the temp sensor with no luck. The internet says CCRM but your video has me questioning that. What are your thoughts?
Hi my name is Steve lively I got my mustang 2003 2 weeks ago some kid owned it said he had a blowout and then lied the rest of the way thru it. I still bought it . Ok I'll show pics at the end of my ramblings, the inner wheel well was destroyed along with abs and I think return lines for fuel. And the wiring harness and ccrm box took a serious beating . He did not pull over and beat the hell out the car . One 5 hour day tracking wires and splicing harness back well all but two light very light green w black stripe and red w yellow stripe. Are the only two I know of thar I couldn't find a mate for . The box took a beating and I'll make a video to show what I've done car is in theft mode fuel pump comes out today said they replaced it at Bob Allen FordI, Johnson County kansas .I have a receipt that says a bunch on it and as far as I saw w I got the car none of it was done one. 1354.93,
My fans wont turn off when the key is on engine off and the car wont start at all unless the fans turn off but they randomly turn off then i can start it but instantly shuts off. Any help? 95 mustang gt
Do you know anything about DRL module on a 1995 svt cobra? I can't seem to find it , it supposed to be under the horns on the drive side splash shield. But its not there. I don't have fog lights, horn , and side markers. I'm guessing there's a problem with this module. But I can't find it.
Hi Darren, I have a CCRM I'm trying to fix on my 94 5.0, and if you have the wiring diagrams I would love them! I was able to verify that when I give the middle leg of the pnp transistor ("solid state relay") 12v the AC clutch does engage, but somewhere on the board something failed and I'm having a tough time finding it. Any help would be appreciated!
I am getting a ticking noise from the ccrm, the car will not start. it almost sounds like it is shorting out. the battery cable is getting warm, as if it is shorting out.? any information or opinions would greatly be appreciated. i hope you can help me out with this.... THANK YOU!
More good info. Thanks.
I opened my CCRM it's a type S and looks different internally. There is no middle Relay and it's layed out differently.
Had an issue with mine where the fan was running constantly, turned out to be the ccrm high speed relay being stuck open
That is exactly the sort of failure a CCRM can produce. Did you replace the relay, or the whole CCRM?
Well I have a problem with my 99 GT. At the moment it doesn't turn on. The starter engages but the engine doesn't run. Before this happened it had the fuel trims super high like at 20+%. Also i noticed the temps would be a bit higher because i think i notice my radiator fan wasn't going Into high speed mode. Also out of nowhere my ac did not work anymore, slowly the clutch would keep engaging/disengaging until now. I dont know if that's a freon issue since I had the mechanic put a new compressor in. Anyway the other day I tried to turn it on and the car would only crank. It had a bit low fuel below 1/4th so I added more and it still wouldn't turn on. So idk if I should suspect the ccrm or some other fuel issue? By the way only mods on it as of now are long tube headers and exhaust
@stangmaster 2 man I sold that pos gt I could never figure out why it was always running so rich
I had same issue a few months ago, and this shop charged me 400$. And I didn't even get a new pcm, or even. Did I get ripped off?? Please respond to this. I have to take it to him tomorrow.
Hi Joseph, I am glad you found the video helpful but, to cover your question, it is quite difficult to assess your issue without knowing the whole story. May with a few more details I might be able to suggest what I would check. -Darren
thought it was the transmission control box... regarding solenoid activation.
This is certainly the CCRM, and does not have anything to do with transmission control, it is literally just the fuel pump relay, and two cooling fan relays in a enclosure. Thanks for watching and commenting! - Darren
What would cause one of these to melt down it happened to me when it happened car died
Necesito q me ayudes por que tengo esos mismo.problemas en el sn gt 1994 mustang
¿Qué problemas tienes? ¿Los ventiladores de encendido, combustible y refrigeración no funcionan? Quizás consulte nuestras listas de reproducción de videos y es posible que ya tengamos algo. La mejor de las suertes - Darren
only think i worry with the one in my 96 is the ac relay i think its bad gonna order a new relay an have it soldered in
I had replaced the CCM a few years back when I was having fan problems after installing new PCM the fan ran again for a few years and now I am having the same issues again...I have replaced everything else again to the cooling system except the CCM, the CCM I bought was fairly cheap so I am thinking the problem could be the CCM again
perform the koeo and koer tests as trouble codes will not always show up on it's on....
My ac compressor don't turn on and the mechanic is telling me that it's a ccrm problem
Thank you very much for the video! When running high volume fuel pump does it make sense to bypass the fuel pump relay in the CCRM and install a new relay and heavy duty wiring? I see this done on older foxbody that don't have the CCRM.
It could certainly be done, but it would be a matter of determining if it is actually necessary. The main factor would be the amps draw of the new pump system, for example my own car has a Walbro HO 255 LPH pump to feed my supercharger and it has been running perfectly on the OE CCRM system since 2005. If you have something larger, take a look at the spec sheet and see what it would require. Chances are, if it is too much for the CCRM, it is too much for the power supply wiring as well and would need an upgrade in that area to match. If you did all that the CCRM fuel pump output could still serve as the trigger for the new relay and system. Thanks for watching and commetning! - Darren
My 2000 mustang. Fan in on all the time. Need advice.
my 94 just started doing that and I did not have a CEL so I did the koeo and koer tests and had code 117 which is Ect sensor ground and also a few other things which I'm thinking it's because of the ground that I got the other codes. I will check voltage at the pigtail connector today and see what I get and also plan on testing then splicing in a spare pigtail connector that I have to see if that fixes it.
Ok i know all my o2 sensors are good but all of my codes say the heater circuits have failed my question is what could be causing this i drive a 97 mercury cougar 3.8l with 93k miles. What controls this the pcm or the sn95. Once i solve this issue car will be tip top again.
Found out its my pcm . before we bought the car the last owner had a tire blow out and she went off the road and jumped a hump. The impact caused a short in the pcm aka computer. Once i replaced the pcm the money light went out and the car started running almost like new. Now im rebuilding the injection system after she will be tip top. Im doing this due to a low idle at stop signs.
So I pulled codes on my 94 and I got 542 543 564 and my car runs but the check engine light come and so I check the codes oh and the fan works not sure about high and low but it works so any help would greatly appreciated
Thank you
I’m concerned about my check engine light
It comes on and off. Any suggestions?
O2 censor possibly have you looked at what codes its throwing
Fitty Tucker you can’t on those years
@@jose51oh51 Not true...o2 sensors can and should be changed when needed...I did it...they are mounted on the mid-pipe.
i believe my ccrm took a shit in my 95 4.6 tbird...
I got a bad ccrm In my 2003 Mustang 😑
Thank you help me alot
i have a 95 mustang,alot of times the first start up in the morning the car will start and stall once or seem to start but doesnt,its does it once,ive noticed that i do not here the fuel pump running when i first turn the key on,is their another fuel pump relay that could be sticking
My man hope you can help me do.you think a bad ccrm can cause a Rich condition?? Getting 60+ psi fuel.pressure but only after warm up condition..I tried fuel new fuel pump fpdm and injectors
Does it matter if you're CCRM letter is different.i have a R on my pony and got one shipped from eBay letter Y.
My fans kick on with the AC on. But they don't kick on just sitting there idling and my car will overheat. And with the AC on my car will overheat on the highway
ANYONE KNOWS THE PART NUMBER OF THE TRANSISTORS IN THAT CIRCUIT?
hi! GTC i have a question related to what i just watched, when you opened the CCRM you pointed to 3 relays right,, and said that one of them is for the fan ok,,, well i have a mustang gt 1994 5.0..and fan is not working ok,, i had check fusses,all good,, and the fun works when i connected straight to battery ok,, but i have no power trough harnesses,, and from what you just explained my problem will be one of those relays inside the CCRM,, ok ,, can you please tell me where can i get that part and number of it?? please any help will be great because summer is coming to californiA and i like to fix it before get`s here ok well thanks in advance
Thanks for the video! I have a 2000 GT and it's been 3 years running weird (power loss) intermittent issues, car feels extremely sluggish in the summer but improves in the winter. No codes at all, I am sick and tired of this car because no mechanic can figure it out (including the dealer) so I ended up reading about this CCRM but now I see that you think that this part is not the issue! I've replace many parts including the fuel pump and no change. Any suggestions about CCRM test?
Similar issue except mine is more than weird. It has almost zero Fuel pressure on a gauge-put in new pump, filter etc.
Not sure where to go now.
Oh mine is a 96 GT
On my 04 Mustang GT, when I turn the key to run position, the fuel pressure doesn’t increase at the fuel rail. I do hear the fuel pump when I do turn the key. Psi stays around zero. When I disconnect the fpdm and connect the power wire and fuel pump wire together, the fuel pump will prime to 40psi at the fuel rail. The car takes forever to start. Over 5 seconds to start. I replaced the fpdm and still have issues. When I drive, the fuel pressure will be somewhat normal then when I punch the gas, the car runs super lean and the fuel pressure drops to about 20 psi or so. A possibility the ccrm has a bad relay?
Having all those exact same problems in my 98 gt. Replaced fuel pump and it did nothing. Could be fuel pressure regulator or leaky injectors.
Did you find out the problem of why the fuel pressure drops? I am having the same issue and I have replaced many parts and still hame the same problem.
Why won the my mustang stay running? It’s a 96 gt I replaced the fuel pump but after it starts it idles for literally a second then turns off and stops working
It seems as if the car gets gas for a mulinute but the relay doesn’t keep powering gas to it
I have a 94 ford mustang which is running rich . Replaced the ccrm, stopped running rich for one run . Then ignition was shut off . Turned it back on and back to running again . Did I just get lucky and the ecu is bad ?
Without proper diag. it is difficult to speculate what is causing your rich condition, but I can assure you that the CCRM has absolutely no impact on fuel mixture control. It only provides power to the pump. The return style fuel system in your 94 runs the pump at a fixed flow (135 lph if stock) and manages pressure with a vacuum referenced mechanical regulator. Fuel delivery is managed by the PCM by referencing the MAF, ECT, IAT, Throttle angle, load calc, and finally O2 sensors. Any of those things out of range could cause a rich issue.
The first step is to verify the rich condition, a proper wideband is helpful, but OBD 1 codes can get you started.
Hopefully this helps you along.
Thanks for watching and commenting! -Darren
Problem is I have a new coil.
Great video but I would like to get a full pin out of the rest of the pins!
www.stangnet.com/mustang-forums/threads/ccrm-pin-out.829560/ There's an attachment here for it.
that being the case i could just delete the ccrm and put in my own fuel pump relay setup?(i no longer have AC and my fans are no longer stock running to a different setup)
I ran this idea past our Technical Advisor, Ted Jenkins of Tuning Innovations and he said it's not quite that simple, there is also a relay for the PCM that must be accounted for and a few other details. He had recently builit a setup to run without a CCRM for diagnostic testing and said really it's more trouble than it's worth to simply replace a factory packaged module with a homebuilt cluster of relays and wires. It's best to keep it OEM. Thanks for viewing and commenting! - Darren
I am trying to remove a full patch of gas from my 2002 Mustang gt. I can't siphon it due to anti siphon in the filler neck so looked on UA-cam and found that I can jump the fuel pump rely to run the fuel pump. However, because the rely is in the CCRM I need to figure out which wires in the wiring harness at the CCRM I need to access so I can do this. In my search it dawned on me that maybe I can access the wire(s) to run the fuel pump at the Inertia Switch by unplugging it and supplying 12v there. Can you please advise me on this or maybe you have a simpler way for me to drain my fuel tank where I don't need to drop the tank? Any help would be great. Thanks!
You could look at the diagram in the video description link and apply power from there, but the simple method I use, is to disconnect the fuel feed line, then cycle the key on and off to cycle the pump prime. OPen the line somewhere easy such as the fuel filter or underhood, and apply a drain to a gascan, then cycle the key, the pump will prime for 2-3 seconds, once it stops you can roll the key back to off and cycle to run again. It may take a bit of time, but I did my SVT Lighining tank this way, and the risk of damaging wiring or modules with jumpers is non existant. It's my go-to method.
Thanks for getting back to me on this. Yes, I did think of doing this but I need to drain over 14 gallons and doing it by cycling the pump would take forever to get all of it out. There is a person on UA-cam showing how on any car you can do this by jumping the fuel pump rely. He pulls the rely, installs a jumper wire on the two connectors where the switch is on the rely but as you know, I can't pull the rely as it is part of the CCRM, but, I thought maybe I could locate the two wires on the CCRM wire harness and jump it there. What I don't know is, do I also need to disconnect the other two wires as well? If I do it this way then I will set it up where I can easily access it again just in case I ever need to drain the tank again. I am looking at the wiring diagram for my 02 4.6L SOHC 2V but I don't see the fuel pump rely but when looking at the diagram for the 4.6L DOHC 4V I see it. Can I assume the wiring is the same? If so, then I think I should be able to access the RED wire and the WHITE/RED wire and jump those two. I will have a hose on the fuel rail to a can and all I should need to do is turn the key to the on position and the pump should run continually. Am I missing anything that you can think of?
Help. Have a 2000 yt? Cranks no start fuel pump getting power but no fuel going I to injector theft light rapid flashing is this a key issue. All grounds are good but key won't reset theft system
Did you ever solve this problem?
I have a problem with fuel in my 96 mustang GT. I have power at the 20a fuse in the box then no power at the inertia switch. Went to the ccrm and I have no power at pin 5 for fuel output. I'm guessing the relay is bad inside? Any help would be greatly appreciated
I’m having the exact same problem. My 1996 GT is showing almost ZERO pressure on a fuel gauge. Runs poorly and dies, press on pedal and it stalls then suddenly zooms to life. New fuel pump, new filter, getting power to inertia switch (because it works and engine dies) and tested for voltage at plug near rear of car, guesses OK,) I’m stumped..Did you find a fix? Thanks for a reply.
97 mustang gt cranks up then shuts down the fuel pump comes on right at first and then started the car the fuel pump never comes on again you can turn key off and restart it and it does the same thing ever time starts up and shut down after a few seconds
You ever get it fixed? My 96 GT is doing the same thing. Fuel pump primes, car starts for 10-20 secs. Then fuel pressure drops to 0 and car dies.
@@marcludwick512 did you find a fix? My 96 very similar, I tried new fuel pump. Filter, fuses etc. please help with an answer if you can..thanks!
What do you suggest when the circuit board is burned?
In that case, the best route is replacement, or seeking professional repair services.
Hi I just saw ur video about CCRM GREAT INFO THANK YOU !
BUT IF I MAY , MY VEHICAL OUT OF THE BLUES JUST TURNED OFF COMPLETLEY NO POWER AS I WAS EXITING THE FREEWAY OH YEAH BY THE WAY I LIVE IN SAN DIEGO . I OWN A 2000 MUSTANG GT AUTOMATIC 4.6L. SO IT WOULD NOT START DONT KNOW WHY ,THEN I MESSED AROUND WITH THE SWITCH IGNITION, AND WIRES UNDER DASH AND STARTED RIGHT UP ! WEEK LATER NO START NO CRANK NO TURN OVER .
But how do you test it
The Ford manuals do not have a test CCRM process as a standalone proceedure. The Pin Point tests which involve the CCRM are established within the diagnostic processes for Fuel Pump, Cooling Fans and A/C troubleshooting specifically. If the issue does not relate to those 3 systems, the CCRM is not in the chain of problems. General pin-out and wiring can be found in either the FSM referenced in the video, or in the 1995 EVTM but no CCRM specific checks are found there unless there are part of the troubleshooting paths for the issues above.
WILL THE CCRM WORK WITH A MANUAL TRANSMISSION AND AUTOMATIC IF IM LOOKING TO BUY ONE FOR A 93 MUSTANG 4 CYLINDER ENGINE?
The CCRM is specific to cars that are 1994 and up, and are controlled by the engine computer. It is unlikely that a Fox computer could be modified to run a CCRM, but if the entire engine harness and computer from a 1994 or newer car were used, it could be made to work. Depending on what you are planning, it is probably simpler and more affordable to source a stand alone fan controller from the aftermarket. Thanks for watching and commenting! -Darren