Hello, I am having problems with the transmission in my 1988 4.0/AW4 shifting on its own. I have currently changed the oil and filter, checked all my solenoids, found out solenoid #1 was bad (replaced with one from a 98 AW4). I have checked the TPS and adjusted it to within spec (.83). My dad and I tried hooking up a Snap-On diagnostic tool to the Jeep but it fails to communicate with the transmission testing side of the diagnosis. The power/comfort switch is missing from my dash but the connector is still hanging. I have jumped the switch from a wiring diagram to both power and comfort with no change. The transmission is mechanically sound because I can manually shift from 1/2, 3 to D and it will shift great so I am sure that the guts are in good shape. The symptoms of the transmission are when you put it in drive, it feels like you are trying to start in the Overdrive(4th) gear? Engine RPM's must be spiked to 2k+ to get any movement out of the vehicle and if you stay on the gas until it gets up to speed, it never shifts which leads me to believe it begins in OD. I have been researching and using an AW4 manual and cannot seem to locate the problem so if anyone has had this problem or has heard of someone who encountered this and has any advice, it would be much appreciated!
Thanks,
Caleb
If you need any more information, just ask!
Thanks,
Caleb
If you need any more information, just ask!