My jeep is staying in a high gear and wont SHIFT down or go into over drive! what could be causeing it do do that
I think that the modulator valve has failed. It isn't a tough fix. Get a new one and replace it and you should be okay.
Testimonial: "were is the modulator valve at"
First I suggest to check transmission fluid levels. Some "check engine" light on dashboard?
×
SOURCE: 94 jeep grand cherokee will not shift into overdrive
My 97 Jeep Grand Cherokee was doing the same thing. I changed the TPS ( Throttle Position Sensor) Now it is great goes into overdrive fine. It is really easy to change.
SOURCE: My 1989 Jeep with AW4 transmission does not downshift or ?
This model has a tranny computor under the dash on the right side screwed to the bottom of the dash. If I remember correctly, there is also an inline fuse attached to the harness. Check the fuse.
SOURCE: 02 jeep liberty won't shift into 3rd or 4th gear.
Ratio codes generally indicate a pressure loss & slipping which the computer reads as a gear ratio problem. Likely you need a rebuild.
SOURCE: 2000 jeep grand cherokee limited starts in 3rd gear
oil pressure problem should be checked independently of other problems...Use a good accurate mechanical gauge to check. If pressure is good (no less than 15psi at idle hot (I prefer to see at least 20) check dash grounding, block ground and if OK, change sending unit. Dash and body ground can influence operation of shift and body control modules so indirectly your problem may or may not be related, depending upon what you find while testing. And it could turn out to be a defective module! They are expensive and just plugging new ones in may work, but then again, it might not. I might be totally incorrect on this...that's the value of actually being there instead of doing this by "remote control".
If you read the numerous posts pertaining to all vehicles, you will see that you are not alone with electrical problems...As long as the engineers who design this stuff, keep using "modules" to replace ordinary simple and reliable systems, we will continue to have these problems. Do some testing and I'm sure you will find a solution! (I'm still waiting for someone to make a program for a PC that will give a complete readout of every system in a vehicle, including exact faults instead of general system "suggestions")
Good luck
397 views
Usually answered in minutes!
i put an new tanny in it and its doing the same thang as the old one
To find out exactly where the modulator valve is located, I would reccommend you goint to your local parts store and asking them to print you a copy of the exploded diagram of the transmission and all its components. Aske them to point out the modulator valve for you.
×