The POSSESSED Probe - Halloween Special (Part 2)
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- Опубліковано 17 жов 2024
- Let's get this high idle condition under control on the POSSESSED 94 Ford Probe V6.
Will this also solve the weird transmission problem, or are there more ghosts under the hood?
IVAN'S PICOSCOPE WAVEFORMS:
drive.google.c...
Enjoy, and HAPPY HALLOWEEN!
Ivan
I had a Ford Probe. I can attest first hand how “haunted” their transmissions were. Good thing Ivan is the best auto exorcist this side of the Vatican Automotive maintenance department.
Those old JATCO F4EAT/4EAT were very problematic. I had to replace 2 in the 1990's on a Subaru Legacy at $3500 a pop.
I had Mazda MX -6, same garbage. Tranny went bad 40k miles
Some tidbits for you Ivan ~ the manual shift valve in these boxes has only 3 hydraulic positions (neutral/forward/reverse) with mechanical activation of the parking pawl when in Park. All forward gear ration selection is done by TCU/shift solenoids. With TCU unplugged or in limp mode, default strategy is to select 3rd (both shift solenoids deactivated) With the manual valve in 2, 1 the overrun clutch control circuit is hydraulically active (not activated by overrun clutch solenoid)....
...the 'pulse generator' signal (there's 2) are actually TSS (turbine speed sensor on input shaft of gearbox), and 'rotation sensor' (usually sensed at the park pawl gear teeth) ~ the TCU logic compares these two signals to determine EPC duty cycle/shift timing ---- in this vid, you're connected to the TSS output....
....both the EPC and TC lockup solenoids are PWM controlled ; both exhaust to drain to modulate pilot pressure (65PSI) which actuates their respective hydraulic control valves ; the solenoid assemblies will need replacing anyway, but the two PWM valves wear out quickest (some Nissan folk know you can get these same valves cheaper from Isuzu =) You can only really diagnose this by connecting a pressure transducer to the hydraulic test points on the gearbox.
As we see, the TCU is not commanding TC lock solenoid, so either something's screwed in the valvebody wrt torque converter control valve, but I'd have to look at the F-EAT hydraulic circuit to fathom why only 2nd apply pressure seems to cause the lockup (I've not done a lot of jatco front wheel drive boxes, but with 4R01 jatcos one suspects torque converter control plug is buggered)
Wow automatics are complicated If I ever have to buy an automatic car think I'll stick with DSG or just a normal manual much simpler
Epic information dude 👍
@@neilmurphy845 Actually, these older jatco automatics are simplistic compared with more modern 5+ speed automatics =)
@@hhn2002 I've really only scratched the surface =) We created a replacement TCU for this style of gearbox as well, using teensy32 as the base ~ the stock TCU in these is mad as a bedbug and relies on 'fuzzy logic' ... I'm not surprised to read that others have experienced lack luster performance from this gearbox setup, the stock TCU is veritably thick as a brick.
@gcbification Interesting - one thought I had, after Ivan’s diag seemed to show that the D2 instant stall wasn’t coming from TCC on… could it be that the trans was kind of ending up in two gears simultaneously, like moving to the next gear without releasing the current gear? Might be coherent with very harsh 1-2 shift, but not sure it’s feasible given the way the shift logic is supposed to work… Interesting symptoms regardless!
Ive just become a '97gt probe owner.
And ive been working on mine for 3 weeks no start when car was given to me. Owner was fed up with it. And couldnt get it statered. So he gave me the car. The throttle body was dinked with like your customers horribly bad.
Took the hole throttle body off and cleaned reset all the factory setting.
And now the car runs great short of just the servicings it needs.
Your videos are enlightening and a thumbs up.
As I commented in the first video that is one SUSPICIOUS "70000 mile" Probe..
Ahhh,,, I just watched the end..
I KNEW that thing didn't have 70000 miles on it,,, just no way...
Yeah, there is no way that check engine light being out was an accident. Surprised you didn't look inside the cluster to see that someone removed the bulb, or smashed it.
I've had plenty of those tiny bulbs that they use for cluster backlighting burn out. Especially the check engine and the low fuel lamp. Since they often get the most use. The low fuel lamp just recently failed on my '98 Honda Accord, I've got it on my list of things to fix. Actually, the backlight on the odometer section has been burned out for awhile also. But anyhow my point being, it happens more often than people might realize.
@@jtjones4727 maybe it burned out since it's been flashing like crazy for the last few years 😉
@@jtjones4727 Interesting. I've replaced every backlight bulb on many 1990s cars (friends and family all have old vehicles) and I've never seen a bad check engine bulb. But, I also live in a state with mandatory inspections where they check the light. If it doesn't illuminate in the bulb test, or if there is a code, the car fails.
I rebuilt my whole dash on a 97 ford and none of the warning lights were burned out. Keep in mind some states won't pass inspection with a CEL on. Either it was on all the time or disabled. My money would be on disabled. Some people are really terrible. That's why on OBD II the computer tests the bulb. If you try to put an LED in there like I did it's always dimly lit. Had to switch back to the original. Also got parts out of a donor dash from the junkyard and it's warning bulbs worked also. I have a whole box of spares if I ever need any more.
It's a Ford, the check engine light could have EASILY burnt out.
A friend of mine's sister bought a new black on black Probe in the nineties so I called her and ask her what year it was and it was a 96 automatic,, she put about a 140000 miles on it in 6 years and wishes she could buy another new one,, she never had any issues at all so there you go...
She replaced it with a new 2003 BMW 325 and learned some very valuable and harsh lessons.. lol
Definitely a horror story, to be sure. I'm sorry your finely honed diagnostic skills went to waste on that piece of junk. How the owner got a few weeks of 'reliable' motoring out of it in the first place I'll never understand! A Happy Halloween to you both. 👻
Gotta love when a car is brought in to get fixed with gas gauge almost on "empty"...
My very 1st new car was a 89 Probe GT with intercooled turbo. Came right out of the Mazda factory. That car was fun, fast and a blast to drive. I lost it when it turned upside down when avoiding an accident that would have sent me to the hospital. I was fine but the car... Totaled, of course. Broke my heart. 78,000 miles and still drove like the day I bought it. Manual trans. No drive train issues ever. Loved that car.
The lights bulbs are no doubt takin out of the sockets for check engine and others that wouldnt go out...Great Video...
I had a v6 probe from new in 96 , I’m in the uk & the car was alpine green(pretty close to British racing green) 5 speed manual with tan interior. Absolutely brilliant car .
Definitely a demonstration of patience and raw intellectual curiosity on your part! I'm with you - one of the previous owners (or his henchman) jacked up the idle to hide the transmission issue. Maybe that worked for a while, but the tranny continued its journey toward death........ I'd be curious whether the timing belt issue can be cured with only a belt and tensioner - would not be surprised to find a bad water pump or loose pulley somewhere. Oh - that night-time test drive low on gas - very spooky!!!! II like manual transmissions, but would not be interested in putting one in this car, even if it were free (the car and the transmission).
I have a manual 95 PGT, with full exhaust system build headers..and short throw shifter. Cold AIR intake....and it has been a RIOT of a car..Manual transmission is the only way..shortest shifts this side of a WRX STI, no joke. Now IVe had plenty of no start problems, Gravity switch problems, Slave cylinder failure twice, and finally a failed clutch, then an oil cooler line blew, and now finally mysterious FULL engine shut off after cars been driven 2 to 3 minutes...which I have YET to diagnose, I have it in SHINY black, still factory shine on it, its garaged, SUPER STIFF stock suspension HOLY cow..but soo much fun to drive.
with having 3 other cars now tho, this MIGHT be the final issue to put it to rest..so we'll see.
Ivan, (btw..thats my dads name) where are U located..would love to look together @ my particular predicament, Ive worked on and solved MOST of the issues on Mine. 250k miles on it, and the engine still pulls like a demon, and runs great, aside from Squirrely issues that come up here and there...have had it for 20 years myself...3rd owner.,..this is my 4rd PGT..I also have a 4th..thats a parts car.
We are glad to see your lovely wife again on your youtube channel! Happy Thanksgiving to a lovely married couple. Please do not eat too much turkey to avoid tummy aches! Love Larry and Jean your friends from Florida!
You are a very thorough technician. Many technicians would have already stopped with a tranny replacement.
A couple friends of mine worked in the flat rock Michigan plant that assembled those probes. Ran three shifts back then, they sold a lot of those!!
Brilliant video and example of real diagnostics. This is how it was in the early 90's when I was learning my trade. A beep code to point you in the right direction most the time but you had to have good mechanical skills too. Way too much firing of the parts cannon with later odb tools and readers.
Real skills from Ivan in this one.
I know the full history of my 94 Probe GT manual, cause I am the original owner. As long as the engine can still rev to 7k, I am keeping it. Great video man!!
Enjoyed the Halloween special. Incredible how much effort is required to pull information from 90s cars. With the transmission issues, timing issues, rolled-back odometer, the fun would never end. Maybe some good parts for recycling.
Unless it was recycled parts to get this to run in the first place
@@OttawaOldFart Re-recycled parts for others.
@@dosgos You missed my point but that is ok
rolled-back odometer.. :) I don't think its rolled back. I think its gone all the way around.
@@OttawaOldFart I finally got your point now that you mention it; thanks for both comments. At least the metals can be melted down and recycled. This Probe was a real junker.
Superb diagnostic, Ivan! Too many Halloween (and hellish) ghosts in there 🙂 Manipulated to pass as "usable" - could call it a scam sale. Too bad there was not much you could do. Maybe better luck with next Halloween car 🙂
Happy Halloween!
Haha, great ending, Happy Halloween to you guys! Yeah that Probe definitely more trick than treat. Good advice at the end, hope the owner didn't pay too much for it, probably still get $500 for it even if with all of the issues.
Starts from the seat!
probaby not in THIS state. and if it's got a flake or two of rust underneath, it's subject to the PA rust rule and destined for the Junkyard by default. and a lot of *our* guys tend to pay "shred" prices.
HI IVAN,good video,I'm sure your gut was telling you the mileage, per belt tension-er and interior wear etc.was screaming triple the mileage? It just seems fishy.My 94 Honda civic has 540,000 thou and the speed o broke a while back.So i bought a one from the wreckers,but i got the one for the SI since it has a tachometer and the DX autos don't .I changed the odometer from the wrecker one with at ONLY 170,000 miles to mine.WHY>> because I'm proud to say I've owned it since new,and it still has the same motor and tranny.it's had 2 sets of axles,2 rads,5 timing belts 50+oil changes and about 10 auto trans fluid changes ,all of which i did.I'm retired now it only get maybe 100 miles a week on it instead of 125 daily.the bad side i have to say the air conditioner took a crap at 2 years,which i never fixed,still a good car.
My 1st car was a Probe back in 2000. I still think its one of the best looking cars Ford made (or Mazda whatever). Mine did go through a couple transmissions though...Cool to see one again. I'd assume most were victims of c4c.
The only vehicles that qualified for C4C were vehicles that were EPA rated 18 mpg or less. So actually there wasn't a single Probe killed by C4C.
Ivan looked like more like he was ready for Dia de Los Muertos celebrations😉
Solid car. Just has some issues to fix. Back in the late 90s I had a 1990 Buick Skylark with known transmission issues. After about 90k miles the TCs would chew themselves up. The cancer of the north took that gem from me too early. Rusted out but was still pulling 33 MPG on the interstate at 70 mph (without cruise). Love that Tech-4 2.5L.
Needs driving to the salvage yard while it's still running Ivan.
Would have been a good halloween joke if you broke down in the woods at night and thought you saw something. Maybe the headless Honda dealer's horseman seeking revenge. Thanks for the specials. 👍
That transmission fluid looked like a melted raspberry vanilla ice cream shake. Sounds like it needs Engine & transmission services in Waukesha, WI
Great video.
Sometimes it’s just not worth putting a bunch of time and money into a 94, but sometimes it just has to be done. Nice work Ivan, especially considering what You had to work with.
Ivan, you never cease to amaze me. Why would you even agree to try and fix this turd let alone go (once again) above and beyond to fix it. What on earth did you charge this guy? I would bet not enough.
You are one of kind, Ivan. God bless you. I don't think there is anything you would turn down.
Great video as always the costume is incredible. The wife is a real cutie; you won some sort of lottery there mate!
While I really appreciate your skills, and know you know vastly more than I do, I'm wondering when checking fluid levels stopped being the first thing a mechanic does, or when it stopped being the first thing for a car buyer? That was drilled into me to check fluid levels and condition first, along with basics like the condition of spark plug wires, and checking for fluid leaks on and under the car. If the buyer had simply checked those fluids first, he likely would have passed on the car, or at least asked a lot of questions about why the transmission was so overfilled. Likewise, if you had seen the overfilled transmission first, it likely would have sent you in a different direction on the diagnosis, and saved you several hours. I'm not busting on you for that. From you, Eric O. and Wes, I have learned to check wiring harnesses to see if they have been monkeyed with, which is not something I would have checked before. However, checking fluids first might be something to add to your arsenal.
Yes fluid checks are a basic starting point. In this case it didn't change the diagnosis or outcome whatsoever, and would not have saved any diag time ;)
90% auto industry related people go for cheating 😒..while they can still make a good living out of while being honest...happy Halloween ivan.cheers
As usual total dedication and over my head. I was nervous that the gas gage was sitting almost on empty. You did not clarify the worn 2 pins on the TCM. Not sure if related, but I have 97 Lincoln TC had both delayed trans shift and high idle. Killed me to take it to Ford as I do most of the work. They said bad throttle body because they could not adjust new TPS. Thinking it might be the transmission went to trusted shop who drove it while watching scanner. Tech said it was definitely TPS and not trans. Installed cheap Chinese TPS and that was 6 years ago, running fantastic ever since. Did not realize how important TPS was for trans shifting. Did you scope the TPS? Perhaps a drop out when you went to 2nd.
I agree with your assessment Ivan - if you're someone who could do the work yourself then it might be worth it but from my experience those 90's Fords were no stranger to electrical gremlins and here in England it seems like they all disappeared from the roads in short order and I NEVER saw an automatic. Probably for a reason.
In England it was not uncommon for the MK1 Mondeos which were very similar to have the clock wound back. A lot of them were mile munching family cars and the trick was they'd get one which had been chucked because it had 130K on it and wind it back to 70K or they'd get a 70K and wind it back to 30K to get a profit on them. The service info if you could find it would often be a good clue as the estates especially used to munch through a clutch every 60K.
Yeah, those Jetco transmissions just don't last, and Nissan used that company for so many years that it ruined their brand. If it has a Jetco transmission-- RUN
Happy Halloween Ivan. Thanks for Sharing!
Those were a great little car with the manual trans. Swapping it would be a win-win in my book, if it's not too much of a nightmare.
Ivan, I think my original guess of 170,000 miles is front and center. Enjoyed the diag. Lots of work for you, though. Thanks,
Ivan and Amanda I love the end. Amanda you should go as Julie Krone the first female jockey to win a Triple Crown Race. The 1993 Belmont Stake aboard Colonial Affair. (one horse person to another.)
Happy Halloween to the both of you!!! I'm sitting in the dark watching you working in the dark, too funny!!!
Love it especially the out-take at the end ! As always Ivan very informative video. Happy Halloween ! Thanks for sharing
Brake pedal wear - I had a 1999 mustang. I had to REPLACE the rubber of the brake pedal after under 50k miles because it had worn to the metal and wouldn't stay attached. I attribute this to Ford's legendary quality. I believe that the pedal in the Probe wore way faster than in a Mazda.
Another fascinating case study - nice work!
I believe if you check the shop manual - if you disconnect the computer and manually select two forward gears ( which ones I don’t remember) and reverse - the transmission is mechanically and hydraulically good - the problem has to be electrical - was involved with something similar back in the day with the factory - the culprit was voltage induced into the speed sensor wiring - that was my problem - but posting to say that there is some type of mechanical proveout you can do with this transmission
I had a Teal 94GT with a5spd as toy. It would GIT! Once I rebuilt the suspension it carved the track very well.
Happy Halloween, Ivan! It’s a shame that all this Probe-specific knowledge is wasted because 98% of them have been crushed……for good reason. 😂
Hi Ivan, I'm an auto mechanic myself and to read the vehicle transmission fluid correctly, 1: have vehicle runing at OPERATING Engine Temperature. 2: Transmission Should be at Normal Operating Temperature. 3:Then put the EBrake on Full and then shift the Transmission to Neutral. 4: You will then be able to check and see if the transmission fluis is Full or Low when hot.
Ivan, great video! Kind of knew that the transmission is on its way out as of the overfill fluid. As it can't breathe with too much line pressure etc. As Fords trans aren't exactly reliable. But great checks and i can see why the previous owner meddling the throttle body as it kept stalling out. Kind of wonder if that the case? Any updates from owner's decision? Also at least you fixed all the issues that you were paid to do. Great job, Ivan! Happy Halloween!!
Happy Halloween to you guys. Thanks for your videos never miss Bill N LI NY
Thanks for your support Bill!
Definitely an internal fault in the transmission possibly solenoid related and the instrument panel was probably taking apart to remove the check engine light and overdrive lights. If they weren't that far they probably also rolled back to the odometer to make it seem more tempting
35:30 .... so someone has had the cluster out to wind back the speedo ... and played with the globes while in there ... the kid needs another car while this becomes dad's project ...
Interesting Probe.. I've looked at several used cars that in no way have the low mileage as shown on the odometer. One was even at a used car dealer who swore it was correct, however there was excessive wear on many interior parts like shift lever, middle console, steering wheel, arm rest, etc. Thanks Ivan!
very cool video and nice ending ..HAPPY HALLOWEEN.... tomorow is my birthday......
Really good looking car, but at least this example isn't so nice underneath. Nice Halloween special :)
Ages ago, mechanics would cut wires to disable the check engine light(s) because some states would not approve a safety inspection if any lights were on. This may be a contributing factor. Happy Halloween!!!
I've seen all types of shade tree scummyness related to the CEL. I've seen people take the bulbs out, try to paint over them with black paint. I've seen one VW where someone took the gauge cluster out, and shoved paper towels inside the CEL so it would no longer illuminate. I still remember the era when people could roll the mechanical gauge clusters back and delete mileage. I've also seen people replace the entire cluster with ones that had low mileage on them.
Beyond economical repair Ivan!!!!!!!!
Another great diag , classic money pit it's definitely had someone's brother on law do some mechanical misadventure. Great to see some old school data retrieval I played around with 1994 canry the other day uses a similar technique to read the ecm codes. Feel sorry for the owner but you have to be paid for your time and expert analysis.
@29:30 I'm looking at the gas gauge..... beginning to get spooky.
when you buy used and, we all have been there you're taking a chance! some good and some bad.
Props to you, Ivan. I would've given up the moment the starter gave me issues
lol.. Well. I guess that's my que.
Needed a probe on this Probe before buying! Good testing on the transmission wiring from the TCM, which then clarified a transmission issue in addition to all the other Halloween horrors lurking in the car.
The trip meter shows 9-1-1… that is an ominous sign!
To paraphrase a movie.... I want some of what she's having... Booo Thanks for the vids... Lexanna rides again.
Thanks for this follow up. I've been anticipating this video as this experience pretty much matches quite a few cars I've encountered. Most of the time my customers don't want me to fix all the issues as another major repair is needed. Similar to the timing belt issue. They usually just want to basically keep them running.
Back in the 1980s, I experienced a transmission module which kept the torque converter locked up. My customer wanted me to install a toggle switch to disengage the solenoid.
Nice diagnostic work.
Happy Halloween from Finland.👍🇫🇮
If you have a fluid transfer pump
You can pump out some from the dipstick tube.
I have been fighting a jatco trans on a 2001 maxima . 235k
But at least that can use scan tool.
There were a few Asian 1990's vehicles that I dug into. They liked to use that closed throttle switch. There surely was some kind of procedure that I didn't know about, but it was tough to figure out how to get them to idle correctly between ignition timing, engine temperature, and throttle stop switch being satisfied along with its adjustment position. it was a lot of guess and check.
In the original Bosch docs for this ECU type, the closed throttle switch is what activates the 'anti-stall functionality' =)
another issue, theres a LOT of ecm, tcm with capacitor failures.... around that era 92 to 2k
It's a survivor - let's not forget it's almost 30 years old....
Thing's a mess... Honestly, I don't see a future for this car. The transmission repair or replacement would probably be more than the whole car is worth. The owner wants to swap it to a manual? Sure, it's doable... but owner may be underestimating the amount of work needed to do that kind of conversion!
Ah well, anyway, was a good diag, Ivan! I never grow tired of watching these "electronic, but non-OBD2" cars get diagnosed!
First thing I would have checked with the transmission is the Park/Neutral Safety switch for proper adjustment and the Range Sensor.
An overfilled automatic transmission will typically cause the fluid to aerate. With air in the fluid, it will not work correctly.
The fluid is brown/muddy colored from friction material being worn off various elements inside the transmission.
I give that car 3-18 months before the transmission completely fails or the timing belt let's go. If it is an interference engine, pistons will meet valves !
The Doogie Howser MD of Car Diagnostics that's Ivan the Great.
Aha!
That was a scary diagnosis.
Love the Halloween thing !..video great as usual!👍👍😎
That's a creepy one for sure Ivan!
Hmmm....Swapped gauge cluster ? That would account for milage and possibly some indicator lights not properly reconnected. Back in my younger days, I bought a car that said 24k miles, but the interior looked more like 70k. And the speedometer should have gone to 120 or so but went to 85 and was missing the Z28 logo. I learned !
Well yes, mazda is the lowest Japanese class automobiles for sure. Combines with Ford it could be bomb... Manual gearbox it's best solutions, we do those gymnastics with bmws here. Well, he have to change the differential also...
I can't lie, I like those cars no matter the cheap productivity. Probably has some sentimental value for the owner, from his childhood, same is with very old bmws to me. I am waiting to see this Masserati conclusion 😅😬.
Anyway good Halloween special working at late night, not an easy job.
Happy Halloween Ivan to you and your half!🎉
I drained fluid from my Magnum's overfilled transmission by inserting a tygon tube down the dipstick hole and syphoning it out. Easy Peasy. The Magnum came with a dipstick tube but no dipstick. I bought one from B&M.
I would think that the shift valve is scored and when you select 2nd there is a bypass and 2 gears are being selected at the same time. The bore in the valve body may also be scored. With the TCM unplugged the line presure would be low so the bypass would not enough to engage 2 ratios
It might just be the camera but the color of the transmission fluid looked odd when you were draining it. Perhaps the cooler/heater coil in the radiator failed and it got coolant in the transmission.
Actually cooler was that aftermarket unit ziptied to the rad support...maybe not sufficient to cool the trans?
Great videos Ivan!! Happy Halloween!! 🤣🤣🤣
93 Camry had similar problem with it's torque converter lock solenoid designed to lock above 35, it was fine if driven on highway then city drive but if alone driven in city it would idle low in drive as though it was about to stall, that had a trans code but unsure what it was, Camry had both tranny and engine codes
Part of the first check when buying cars like this might be to pull out the dashboard and see if no important lights are missing. Happy halloween.
Reminds me of the CD4E which was known to cause issues in earlier models of the Ford Escape, in last year escapes (2006+) seems like it got better, some people get 300k to 400k out of them doing fluid changes every 30k miles.
If I'm not mistaken, the TPS influences transmission shift behavior. I'm no expert by any means, but I have heard that a transmission can be destroyed with a funky TPS.
those were great cars for ammatuer night at the circle track. first thing was to remove the instrument cluster. the rev limiter lived there in the tach circuit and it would affect the trans with the speedo and tach circuits. but yeah that might have escaped the executioner(crusher) to drive around dead in the land of the living. don't eat too many snickers ivan.
Sometimes the TCC can activate because the screen on it becomes plugged with metal filings allowing the TCC to engage. 2nd gear may be the first allowable gear to engage convertor clutch. Explaing why it does not lock up in first gear.
I thought I was the king of shitboxes. I think it's time to take that one out to pasture.
Ivan, you have never looked so healthy, but the cowboy looks a bit rough though he he :-D.
What else could i say :-D
The car is painted junk.
Regardless of what the voltages said, it's acting like the lock up clutch is engaging. Even if line pressure was off the charts, the torque converter would still let the engine spin. The lock up clutch is the only thing that will physically stop the engine. Why it's doing that, who knows, but seems to be TCM related.
Scope proved that the TCC was NOT being commanded on when the stall occurred. That surprised me as well! Why would it stall ONLY in 2nd gear??
@@PineHollowAutoDiagnostics Agreed, it appeared that it wasn't being commanded on and also odd to only happen in 2nd. But, what else could physically stop the engine like you dumped the clutch? I mean that is the classic stuck lock up symptom. Even if second put the trans in 2nd and rev, like a trans brake, the converter would still let the engine run, the car just wouldn't move. It wouldn't cause it to bang the engine off. Totally guessing here, could line pressure be to high with TCM connected and bleeding past TCC solenoid? But something definitely has to be getting that converter to lock up. Not sure if you still have the ghists, but does it have test ports to measure actual TCC pressure? That would be more definitive than the electrical control to solenoid. But what wold you tell someone with the same symptoms?
But this was a good one for sure!! Happy Halloween!
Here's an idea too, put it in first and manually activate TCC. See if it does the same stalling.
This was some amazing trouble shooting man.
This looks like a mess of a car. Compounding issues caused by severe lack of maintenance all around. A lovely gem to work on, eh? The timing belt was the icing on the cake. Is the timing cover broken or what??
great video tks
Ivan, you mentioned the Mazda minivan.
If I recall correctly, isn't the gas tank under the driver's/passenger seat area?
Should that not be inspected, ha, ha,...
Thankfully, we have transit in my area.
I can't keep track of all the safety violations these days.
Hopefully GM can revive a newer Fiero model.
No dents and self healing windshields will alleviate some problems.
And horses need shoes, but they can't get dents.
It's a no win situation unless one is an alien.
MPV is on it's 3rd gas tank...Northeast salt has not been kind to it over the last 34 (!) years! Actually I'm a bit surprised that it still drives straight and that the axle stays attached when I take it on rough jeep access roads lol
I’m 14 min in. The big bad scary anal probe! Your brave driving with the timing belt like it is. Also gotta love they dropped it off with under a 1/4 tank. 🎃
Even though there is a PWM signal, the duty cycle may not be correct. Maybe there is a spec on what the DC should be. The TCM could have an internal fault causing it to output too much line pressure or it may have a missing signal.
I suspect that the IC lightbulbs were intentionally taken out because they were staying on. It doesn't seem that much work to fix all the issues the car has, the engine sounds good, just needs a timing belt and tuneup, the transmission is probably mechanically fine, needs TCM diagnosis or rebuild. Other modules may have more issues (SRS, ABS). At least you could replace the IC lightbulbs.
Ivan the two smaller stripes in the tach are at 333 and 666 tpm (the 1 stands for 999) So when adjusting the tpm theneedle should stand at or just past the second small stripe
Being put in 2 gears at the same time will also stall the engine.
Reverse is 2 shafts/drums held at the same time so perhaps 2nd and reverse are being engaged at the same time?
I would think that 2 gears at once would cause the car not to move, but not stall it out, since the TC is not locked up...kind of like that Lexus LS430 that didn't have Reverse!
@@PineHollowAutoDiagnostics yes I was stuck on the idea that the TCC was locked as well.
I think you did touch on high pump pressures being a concern since the pump is direct driven independent of the slip/lockup of the converter and might be responsible for the engine stalling in 2nd gear.
Interrerresting case, one thing I don't get, why was there a difference between an unplugged TCM, but there where no signal changes at the scope? Coincidence?
The Bionic Woman, Lindsey Wagner, used to advertise those cars.
Hmmm... an almost 30 year old car with 70,000 miles. Nothing suspicious here.