Diagnose my AW4 issue
#1
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Year: 86 and 89
Model: Cherokee
Engine: 2.5L and 4.0L
Diagnose my AW4 issue
Well I got my 89 4.0 automatic out on the street after 7 months in the garage. before that it sat outside for over a year and a half without moving and i dont know much about this tranny. (Just for some background) When i backed it out of the garage it had plenty power, left some tire marks after romping on it. When i put it into drive to drive down the street it took off like a snail and no matter how much skinny pedal i gave it, it just SLOWLY accelerated. The fluid is at the proper level and the engine runs strong. What could it be?
#2
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Year: 87
Model: Wagoneer
Engine: 4.0 I6
Leaving it sitting up for so long then romping on it probably.
Check your tranny fluid if it is ok. DO a good tranny service and use DEXTRON 3 Make sure you have the engine running for a lil while before you check the fluid. Run it through all the gears while holding the brake.
Its 19 years old baby it a lil.
Is it making any noises.
Check your tranny fluid if it is ok. DO a good tranny service and use DEXTRON 3 Make sure you have the engine running for a lil while before you check the fluid. Run it through all the gears while holding the brake.
Its 19 years old baby it a lil.
Is it making any noises.
#3
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Year: 86 and 89
Model: Cherokee
Engine: 2.5L and 4.0L
Well romping on it was by accident, never drove this one before and the accelerator is a little touchy. yep, checked the fluid and plan on dropping the pan to change filter and refill with dxtron 3 and not atf+4, i know better than that. but im curious if the previous owner really destroyed it and i dont know how the tranny operates. Is it gear driven or belt or what? any info or even a detailed diagram of the aw4 would help. O and its not making any noise, that i can hear.
Last edited by greatwhite; 05-07-2008 at 06:22 PM.
#4
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Year: 87
Model: Wagoneer
Engine: 4.0 I6
How does it run when you put it down to 1-2 gear then shift to 3. Does it drive easier when you manually shift it. Will it eventually shift through all the gears? I am pretty sure it is gear driven. I would do the t-case the same time you do the tranny since they both run off of Dex 3. Shift through all the t-case gears also make sure it isnt stuck in 4 lo. That is all i can think of at the moment.
#6
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Year: 1987
Model: Cherokee
Engine: 4.0
sounds to me like you are taking off in third gear... as in the TCU is not shifting the transmission appropriately. Try pulling the shifter back into 1 and taking off.... if it takes off like it should, check your TCU fuse and/or the solenoids in the transmission.
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Year: 86 and 89
Model: Cherokee
Engine: 2.5L and 4.0L
well, in 1-2 gear i got great power just like it should when i accelerate. in 3rd gear at dead stop just like it should, then when i start in drive from a stop its like im starting in 4th, no power at all, like a snail. I have never had to mess with the TPS. is this still a TPS scenario? If so whats the proper way to adjust? If not, what next?
#11
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Year: 1996
Model: Cherokee
Engine: 4.0 HO
Sounds like it could be the TCU still. You could always just shift through the gears manually like I do on my old ford. (not really, don't do it all the time, haha)
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Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Try this guy's site you will want to bookmark it. He is one of the best Renix guys on the web. He makes everything easy to understand and he is knowledgeable about a little of everything Renix related. Some stuff you need a reader to use but he even supplies those to you.
http://www.lunghd.com/
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#14
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Year: 86 and 89
Model: Cherokee
Engine: 2.5L and 4.0L
WOW!!! Awsome site bluexj, spent 2 hrs on it and still want to spend more. I will adjust the tps tomorrow and if that doesnt work i will try the kick down cable. Thanx again