Hydraulic to Electric Fan Conversion 01-04 Jeep Grand Cherokee 4.7L
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- Опубліковано 17 тра 2019
- Get rid of that hydraulic cooling fan and go electric. Used a fan from a 98 Jeep Grand Cherokee with a 5.9L. This Efan was only offered that one year with the 5.9L. Used a Flex-a-lite fan control and optional manual on and off switch. Using a 10ohm 100-watt wire wound resistor (to replace the solenoid) to keep the ECM/PCM happy, no engine service lite. I know the Efan I used is very rare but there are other fans that could be used like the Ford Taurus 3.8L, Lincoln Mark VIII, Mercury Villager, and some Volvo models.
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#jeepgrandcherokee #martinbuilt - Авто та транспорт
Your a genius and have excellent patients i have 2004 se jeep grand cherokee had it for 6 years 225,000 miles and still runs like new very quiet! Thanks for your videos you've helped me alot!!!!
I know that's what I have been telling people for years..Lol. Thank you!
You just solve big problem for us WJ owners Martin. Awesome video .
The way you work is very clean, you make sure you cover even the smallest details. Congratulations!!!
Thank you so much 😀
Love how thorough and informative you are Martin. I've been reviewing your video as I continue to plan my own hydro system delete on my WJ. Thanks again.
Thank you, Max. Glad you found it helpful.
@@martinbuilt hey is the NPT fitting for the end of the high pressure line to go into the steering box?
The mod I always wanted to do! Well done!
Thanks for this video, I used a mechanical fan off of an 04 Silverado and a power steering pump from a 06 dodge nitro and the hose you linked on Amazon. Worked perfect. I had to fix a valve seat drop because of that hydro fan.
This is the one I was waiting for, but since I did the solenoid mod, I'm liking my hydra more and more.
I glad to hear the solenoid mod worked for you.
GLAD I found your channel. Great tutorials, I’ve got a lot to get mine running again. Inspiration, desire and hard work are the keys to success. Thanks
Thank you I really appreciate that I'm glad you liked it and found it helpful.
I've been watching a lot of videos you like one of the best mechanics I've seen
I had to come back to your channel here. since you helped me with my front passenger side panel... Now i think i have the problem with my cooling fan not working... Thanx for all you do on the tube here...
I'm glad you liked it and found it helpful.
Just came across your videos and almost everything I want to do with my WJ you've done. Great videos and explanation on everything to do. Can't wait to start on the projects ahead
Awesome, thank you!
Welcome aboard!
Great tutorial I can’t wait to get my WK back and try all your mods i especially like the transmission mod. From NZ hello and thanks
Wow, such an Ingenious design..... I will use some of your ideas on the cooling system for my Jeep 2000 Grand Cherokee 4.0 L
Another awesome video! Great work. I can't wait to do this mod to my Jeep.
Thank you James appreciate it.
Another great job martin!
You allways find that ingenious way of douing things...me...on the other hand...got tired of looking at my old hydraulic fan and it went to the trash..( with that stupid solenoid attached)...so..for weeks i had no choice but to buy a solenoid from ebay with the hardness for $140...until today after seeng your video...yep...you just save me that much...just bougth two of those resistors for $5.00...well...let me tell you that 12 blade fan from ford and clutch are douing their job ok...had to buy a new shroud that cover the fan and it came with an electric fan that will be rigged just like yours...and the three rows alluminum radiator from ebay its douing a great job...just a little wider than the original and it takes some adjustment...i used the same power steering pump by having the hose made...so far so good...cheers!
Excellent job. A ton of work!
Yeah, it was but worth it!
Nice job! Your attention to detail is 2nd to none!
Thank you Rick, I appreciate that!
Is better an Electric fan that a hydraulic sistem.
Great video!!
This has been working much better than the hydraulic fan.
Great video. I have to do the same thing to my 2002 Jeep Grand Cherokee 4.7 liter. Thank you so much for this road map to conversion.
Thank you, glad it was helpful!
This looks like the route I'm going to have to go. Good thing I have your excellent video to follow! Need to spend some time at a junk yard very soon!
Can I use the stock factory power steering pump? I just need to change the lines correct? I'm a little confused about that part.
No, you should change out the pump as well
Your knowledge is exemplary. I had my radiator changed and I'm certain they didnt do the job as well as you. As a matter of fact still having some issues with the fan not kicking into full throttle!
Thank you, it's kind of unlikely that it will kick into full unless it really heats up. You can check the fan's operation by unplugging the temp sensor between the alternator and the AC compressor, the fan should kick into high . If it does it is operating correctly. I'm just not a fan of that hydraulic fan. No pun intended
I'll try that. Thank you.
Thanks for your awesome video! Great work. I will do this next step.
Great video! Not sure I’ll ever do this (or if I even could) but cool to see it done.
Very COOL build 👍
Subscribed
first class work Martin,that was a great job,excellent.
Thank you, I appreciate it.
@@martinbuilt Martin where u get the hydraulic fan solenoid new I only found used not new
You’re a great resource!
Thank you
I full agree with you! Mans untold rule never throw anything away you never know what will be or could be used for something. Because ten years down the road stuff is going to be hard to come by
That's for sure.
Many things get from you man thanks ...
Your videos are excellent. Great attention to detail.thank you.
Thank you, I appreciate that.
I will be doing this mod on my WG 2.7CRD , cheers mate
That's awesome, let us know how it turns out.
Wow great job👍
Like I said genius.Should have came that way from the factory.Love how OCD you are about the fit and finish of your installations,I'm the same.way,lol.Keep posting these great informative videos.
Thank you I really appreciate that. I will keep them coming.
I need to get this new shop of mine organized 1st.
Awesome job!!! Big regards From argentina!!!
Thank you!
Very nicely thought out and clean installation.
Mike
Thanks, Mike, I appreciate that.
Love the videos Martin
Thank you, I do appreciate that.
You sir are one fine Master Craftsman... Hello from northern Michigan...
Thank you, Mitch
@@martinbuilt would like to be able to ask you questions in the future when I get a problemsome Jeep in my garage
@@mitchpelky2239 Yeah no problem, you can contact me on my Facebook. There is a link in the description.
awesome video, just got a 02 Cherokee with 4.7 my scan tool tells me the solenoid is bad, was looking for conversion and you nailed it! my next project, thank you
Thank you, Phil, let us know how it turns out.
@@martinbuilt what did you do about the check engine light for the fan solenoid?
@@tylerhall1348
at 33:15 I answered that.
@@martinbuilt thank you i missed that part
Hi there martin,
in a WK'08 model 5.7 there 3 wires which particular wire goes to the resistor...
Wow awesome good job
AWESOME video, as always. Only issue for me is, I dont do or know or like messing with electrical stuff. The earlier part with wiring inside the dash, is very confusing to me. All the rest of the mechanical parts, I get. I wish I lived close to you, I'm in Florida, to have you teach me (paid) classes on much of your knowledge.
Nice. Thanks for this video. Love how clean your engine bay is. I bought an 04 with the 4.7L almost 3 weeks ago now. I have a crack in the radiator on the driver's side. The hydraulic fan has wetness in the center of the fan. The 5.9L Grands are rare here, but I did see that Flex-a-lite has a fan for our models. Really thinking about getting that for when I change out the radiator. Can't wait to get this done and hopefully I can figure out what's going on with my oil consumption. Hopefully when I take off the valve covers I can see what might be going on there along with the PCV valve mod you show on your other video. Thanks again.
Sounds good let us know how it turns out.
@@JM-id8ft I did not get the flex a lite. After getting the radiator out and being up underneath, I found where a massive oil leak was happening which I thought was the rear main seal. Where it was parked, I didn't have the capacity to drop the trans. So I ended up replacing the radiator and putting back the power steering lines. Haven't had any issues since and it's been 7 months. But if I ever have radiator issues again, I want to change it to electric.
you are the man
Martin, I did a poor man's version of this. Installed a severe duty fan clutch in my 4.7L. I have a Ram 1500 so it's a bit different, but cools way better now, even on the highway! I know its robbing me some power, but It's my daily work truck.; I'm not trying to put down 0-60 or 1/4 mile times. Works for me. It's also not as loud as I expected
Nice work, thanks for sharing.
Fantastic Job!
Thank you, I appreciate that.
Not real familiar with the Chrysler setup, but most import cars set the fan temps at about 10 - 15 degrees above thermostat temp. The stat will keep the engine at 180 degrees even when you are on the highway on a cold day. Setting the fan at that temperature will make it run constantly (and unnecessarily) because the thermostat keeps the water at 180 - even if you have tons of cooling coming in from driving etc. Again just a thought :) Thanks for the content!
Thanks a lot Martin
you are very welcome 😀
Excellent work that I will eventually follow for my WJ, but I want to comment on the efan controller install. I am using that exact same controller and water coolant temp sensor in my XJ to run the aux efan. First comment is that I am surprised you put the controller in a spot where it can be subjected to the elements. The electronics are potted and you sealed the connections to the high power wiring, but corrosion on the control terminals will eventually cause functionality issues.
The other comment is temperature sensor placement. When the thermostat is closed, there will be minimal coolant flow through the radiator causing a fair time lag for when the sensor feels a change in temperature. This is less of an issue when the min coolant temp set point is significantly above the thermostat opening point, but if trying to set the efan to control right at the thermostat opening temperature, this is a challenging location to use. The preferred location in this case is in coolant line running to the heater core. This hose sees a more constant flow of coolant coming off the motor, and is better suited for controlling the efan when running very close to the thermostat opening temperature.
perfect job . thank you
You're welcome!
Thanks allot Martin! I was going to do this on my 4.7 but the only thing I was still trying to figure out is how to keep the check engine light off.
Your welcome Mitch!
Heads up. I used a 99-00 shroud and fan. Bolted right up to the top two bolts. Modified the bottom two.
Martinbuilt , I've just done a road trip from Ravensthorpe to Karratha in Western Australia - 2,092kms in 2 days , outside air temp went from 8c to 36c , summer is coming so 45c+ soon
Before I set off I did your solenoid mod (half turn in) this saved the motor from cooking
After I crossed the 26th parallel I had to turn off the aircon open the windows and put the heater fan on to keep the motor cool
It's the only Jeep in town , every other 4x4 is a Toyota Land Cruiser 79 series 4.5 V8 twin turbo diesel , but the base price is $80,000 AUD I paid $250 AUD for my WG in Jan
The fuel consumption rose with the solenoid mod from 8 litres per 100kms to 10.5 , but that's cheaper than a new motor
Thank you for sharing your experience with making the Solenoid Mod and glad to hear it worked out for you. That sound like quite the trip.
Nice job
Thank you! Cheers!
Good luck finding those fans 🤣 I can’t even get them for my 5.9
Should have got a 2 row for this project. Great job on those brackets though. Rrally good craftsmanship.
Thank you, Michael! Are you talking about those all aluminum radiators that I see on eBay?
Good job love a person who loves perfection.
Thank you, John!
I loved how thorough and informative you are, Martin.
Interestingly, my 2000 Jeep Grand Cherokee WJ has two fans, overlapping the radiator. And I realized that, what remains internally is smaller, it doesn't seem to be working. I've already applied 12VDC to it and it's functional. And about the wiring, one is ground and the other is the command power to work. Now I need to know what makes it work. Can you please guide me? Thank You!!
I really enjoy the videos man! Have you ever thought of making kits for the awesome mods? There’s some of us that are afraid to mess up and have it be a waste of money lol. I know you’d make a killing of them!
Thank you Rick, I appreciate that.
Maybe once I get into my new shop I can start building kits for cooling systems and like my throttle body adapter.
@@martinbuilt Nice! And maybe do the hood scoop for the jeep too haha
Do it to my jeep please, great job man 🤙
Thank you!
Martin I think your video is great and your attention to detail is amazing. I have been trying to decide between a zj and a wj for an off-road exploration rig. I have done quite a bit of research and found that the wj's with the 4.0 have an electric fan would it be possible to use this setup on the 4.7 maybe with an upgraded electric motor and the controller you installed. The shroud should be a perfect fit.
Hi Martin. Great Job as usual ;) Do you know any other stock (universal) fan will fit to this conversion?
EXCELLENT !!!!!
THANK YOU! 😊
Martin, My bleed screw is stripped. Can I just burp the system by squeezing the top radiator hose with the radiator cap off?
Great video! What positive ignition source did you use to wire the the controller at terminal 9?
As always, great idea and execution.
I am wondering if it is possible to select a smaller coolant pump wheel for this engine to increase the pump speed, and thus force the coolant to circulate faster.
Regards
If you ever sell that Jeep I would love to buy it . I have the same Jeep and motor but great job men.
You can't call dibs on his jeep.
Martin will probably be buried in it. 😆
I did your ram air mod to my Dakota,havent done the hood seal yet.I used the existing air intake silencer,cut out the top,placed a K&N filter in the opening,made a metal bezel to secure it and reconstructed the bottom of the air intake silencer to replace the material I had to remove.Mine deviates from your design in that.mine still also draws air from the airbox as well.In my.application I think I will make a.steel plate for the underside of the hood that sizes it to the filter and put the foam on that for the seal.
Nice, I an also redesigning the one I made.
Would like to see pictures if your Ram air.
You can send them to my Facebook Messenger.
Link in the description.
Great video! Really thorough job! Lots of good info even if one is not doing this swap. Sad that we have to fool that way-too-complex ECM system. I'm remembering my 1978 Saab 99 Turbo that had two fans in front of the radiator (switched on ground side, left fan hot from key, right from battery, so you shut down when the fans cut in, and right fan blew cooling air over the turbo for a while). We know pumps & fans that push work better than those that pull. Is there space for a fan or fans in front of the radiator (out of full engine bay heat)? Just wondering. You did gain a great amount of engine bay space, making belt changes, etc. a lot easier. I really like that. If you did not change power steering pump, just blocked line to fan, would it run too much against its relief valve and overheat the fluid?
Dear martinbuilt, you are truly a genius and an artist. Question: What type of fan has been installed?
This particular fan came out of a 98 Jeep Grand Cherokee that is equipped with the 5.9 l engine unfortunately they made less than 15, 000 with the 5.9 so they are somewhat hard to find.
This is an educational video for sure, and it addresses what appears to be a widely experienced cooling system problem with Jeep WJ models. My 2004 WJ Overland was already converted to an electric fan of unknown origin before I purchased it, and when I recently bought a 2004 Laredo, overheating problems that started right away have forced me to have this same conversion done by a local shade tree mechanic out here in the sticks of the Third World.
For the Laredo, a Mercedes electric fan from an unknown model is inbound at this very moment from the junkyard, where the "consultants" would only confirm that the donor vehicle bore a 4-Matic emblem, which narrows it down to maybe twenty Mercedes models haha. Anyway, I'll watch the rest of this clip now, to note down any pointers that I can mention to the surgeons I engaged for a princely sum equivalent to $20 USD. What could possibly go wrong?
W211 model electric fan is good size. Include PWM controller, that can ne easily control by arduino.
Excelent
Thank you 😊
Fantastic video and I mean fantastic!! After doing some looking on-line I was sure I was going to be stuck with the Hydraulic setup because of the PCM issue or the power steering pump issue and your video completely puts faith that this won’t be a problem.
After a few months can you provide any update to how this went, any thing you feel you could have done different or even adjustments you made after the fact?
Thank you, no I couldn't be happier with this mod. Probably would have been nice if I could have found a more popular fan one that is more readily available instead of the one I used being that there's only fifteen thousand of these fans ever made. But I couldn't be happier with the performance this particular fan. Thanks again
Saw something extremely smart on this video that 99% of people skip over...solder the wire to the ring terminal!!! It cuts down on corrosion and cuts out contact issues through expansion and contraction...it's a Chrysler wire harness so ALWAYS ALWAYS ALWAYS solder!!!!
yes I like to reduce points of failure.
GRANDE 👍 SUPER 👍⭐good hi 👋 Italy 👋
Martin,
Was thinking of doing this on my 4.7l HO. I have a question however.
Do you think it is possible to run a mechanical fan off the 4.0l WJs?
I personally would rather have the cooling power of a mechanical fan and loose a little MPGs as I don't want to overheat the engine.
Let me know your thoughts.
This is very interesting to me, I must be one of those few people who likes the hydro fan and how it works. What would be the main reason for doing this conversion? Enless it broke or failed. I’d say that at full speed the hydro fan can still move more air than the 5.9 fan (I have a 5.9 limited). Yea the hydro fan can act a little lethargic in stock form, it seems to give the bare minimum air requirement but in spite of that it’s never let my Jeep overheat in the most severe conditions. You cleverly showed how to turn up the solenoid too in the last video if you want to wake the fan up a bit and make it run cooler.
Even with the mod that I did to the solenoid, I would see temps at 215* plus and for me, that is to hi. I am trying to achieve the best performance not necessarily the best MPG. The engine will get it's best MPG at 204* that is what the PCM is trying to maintain but not doing a very good job at it.
Hi Martin, new question. The adapter you drilled from 1/8 to 1/4 npt, it has a small screw to ground it. I ordered the same adapter from Amazon. I notice when you checked it with your heat gun it didn't have the second wire coming from the ground point. Is it needed or not? I installed mine, and grounded it also, but didn't work. I'm thinking the sensor is bad because many other people left reviews saying the sensor didn't work for them, so I going today to the autoparts to find a "working" sensor. Thank you.
Martin I am in the process of doing this mod right now and just had a question. On your wiring diagram for the gamma switch, you have arrows on 3A and 3B that point outwards. Is that indicating that you are installing jumpers from 3B to 2B/4B? Or is that just indication of the switching mechanism? Also, did you tie 3B(12V switchable source) in with terminal 9 on the fan controller? Just want to make sure I'm not missing anything. Thank you in advance!
Have you tried installing a engine oil cooler on a 4.7? It would be interesting to see one done.
Martin que tipo de bomba hidráulica me recomiendas despues de hacer el cambio.saludos
That aluminum bracket looks like the catch can z brackets that hold the can in place on a ram
Hi , thank you for sharing your knowledge. I am wondering if the hydraulic fan solenoid has 3 pins would it work to use a 3 pin electric fan with the resistor built in?
I have the 2010 grand Cherokee 5.7l
on the 2000 grand cherokee 4.7, is the coolant temp sensor used for the dash temp gauge AND the temp switch for the electric fan? i have an electric and clutch fan both?
Thanks for the great video. Shame I cant do it on my 2.7 crd. As there is no replacement power steering pump without the hydraulic fan.
If you're able to hook it up hydraulically you still might be able to use the power steering pump. I could have retained the stock pump I just needed to change a few fittings to make it work but, opted to change the pump instead.
Hi Martin!
I was wondering which fan controller to use, you two part numbers listed?
Also, I found a 98 Grand Cherokee 5.9l fan asm. The fan has three wires. Which ones are you using?
I can’t wait to get my 01 WJ running!Thanks again for sharing!!
How did you wire up the rocker switch I’m not following that very well at the moment
Martin, I just started to have problems with my hydro. fan set up in my 01 WJ.
Thank you sharing this mod.
If I can find the correct shroud, does Flex o lite have an equivalent fan?
Nice job on the videos btw.. I’m an subscriber now!!! 👍👍
I'm sure that flexalite would have one that would fit well. I'm not sure that it would perform as well. I have never found a aftermarket fan that works as well as some of the OEM fans.
Thank you for watching and subscribing.
Isn't there any Grand Ckerokee models that come with an electric fan and radiator that would fit? Do you think the entire radiator and E-Fan from the 5.9 Grand Cherokee would work in the WJ 4.7??
98 Jeep Grand 🚙 Cherokee 5.9 now I see the print on your opening title or credits
I got a 02 Grand Cherokee. Recently put in a new radiator, now it leaks trans fluid, radiator fluid, and oil. I’m bout ready to send it down the road. Still runs great though.
sorry to hear that, what brand radiator did you use? There are some questionable manufactures out there. I purchased an all-aluminum radiator that didn't even come close to fitting and then the one I got that was made by OSC fit and worked perfectly. Don't give up.
The radiator fit good, but I’ve been chasing leaks since I installed it.
Found it leaking the other day at the threaded plug just below the radiator cap. The o ring was broken. The car is the age when everything starts going bad it seems. Still runs great though.
@@martinbuilt I’m not sure of the brand of radiator. I’m sure it was a cheaper one.
Was there an issue with the hydraulic cooling fan, or was this simply to move away from that style-free up horsepower ? I've not found an issue with the hydraulic fans, unless the power steering system had issues or the wrong fluid was used in the system. Thanks for sharing this mod, especially the 10 ohm 100 watt resistor to keep the ECM happy! As always, your work, thought process and logic are well researched, well thought out, covering every possible outcome!
Yes the hydraulic cooling fan would not coolly engine to my liking. Even after I did the solenoid modification it would only get down to 210ﾟ
With this electric fan I've got no problem keeping it at 185, 195 on the days when its a 108ﾟ ambient or more.
Hello Martin, I'm a 2002 límited wj owner. I bought a ford Taurus 9 Blades fan from dorman. But, that one is a 2 fan speed that I don't know which controller I must use. Does the Flex a Lite that You use could be works for my fan? Thanks for your reply!
bad ass ride my o3 4.7 was fast can just imAGINE WHAT YOURs IS LIKE 0 / 100 love the ram air set up !!!!!!
Thank you, I really appreciate that. 😎
Was there a reason for using a e-fan from a zj instead of the e-fan from an early we? Btw love the vids. Keep it up
That fan uses the basic same motor as the Ford Taurus 3.8 fan that moves a ton of air. The 98 ZJ shroud and fan are a great fit and I like the rubber flaps that open at highway speeds.
i want to put a clutch fan on my 5.7L. do they make one that will fit?
Dear Martín, cordial greetings from Ecuador. I am also converting from a 2001 gran cherokee 4.7. I will use the electric fan motor from the taurus 3.8, I will keep the original fan, I will put a thermo switch 92 to 96 degrees Celsius, I plan to keep the original thermostat of 91 degrees Celsius. Any advice or suggestion. Thank you
how did you hook up the resistor you mentioned in the description???
Cual bomba hidraulica hay que colocarle d3spues de hacer el cambio de hidroventilador a electroventilador
Great video! Do you think this mod would work for a 2010 Jeep limited model with a 5.7?
Does the 2010 have a hydraulic cooling fan? If so I think it could be done.
Yeah this is all good if you have a machine shop.
That's awesome, if not just for the extra room. What's that purge mod your using for the coolant? And you mentioned the coolant hose adapter used was 40mm, I thought it was 38mm, think that would work better?
Thank you, I'm using a 10an to 3/8 NPT fitting with a 10an cap.
Fitting amzn.to/2K2TAih
Cap amzn.to/2HEvusM
Does anyone have a wiring diagram/ schematic for the electric fan I'm looking for the pin on the ECM that is for the e fan as some WJ's had electric fans from the factory because I believe is the same computer box for the 2.7, 4.0 and 4.7 are the same with the difference being the software