Could this be an automatic transmission problem?

[MartinTj]

Hello,
I have a Tj 4.0 with automatic transmission model 32RH A904 (as per Chris's post regarding car specifications).
My problem is that: After starting the car, when I want to shift from park (P) to drive (D) the car wants to pull forward with great force - It's practically as if I had the drive gear on and pushed the gas to the max... and again I want to point out that this happens when the car is parked and I want to shift into drive.

The oil in the gearbox was changed, I also had the torque converter checked. The torque converter is supposedly ok, but from what I was told it has been modified before.

... so my question is: Have You encountered a similar problem or what could be wrong?

Thanks a lot for help, Martin

 

[hear]

There was some debate about this in a thread a while back where the trans shop seemed to be in conflict with the inter webs with regard to model #'s, but my extensive but admittedly amateur research points to the 32RH being otherwise known as the A999, and the 30RH being otherwise known as the A904. Having said that, many of the parts swap between the two.

Not that it changes much about your problem, which I also can't offer much help with.

 

[1Salty Dawg]

Does the Jeep idle high when its in park?

 

[MartinTj]

At idle, everything is ok. After starting the engine, rpm go up to about 1100, and after a few seconds they drop to 600 and stay that way.

 

[MutantNinjaTJ]

I would revisit the torque converter again. How was it checked?

 

[NskLJ]

What is the rpm when you put it in gear? I would look into the idle control solenoid. Maybe disconnect it but keep the vehicle running when you shift to drive and see if the problem to reoccurs. Most converter issues caused by locked up converters will cause the engine to stall when put into gear.

 

[drivincar67]

1. Check transmission fluid while vehicle is running, level, and in neutral. It is better to be a little over full than a little under full.
2. X2 on idle control solenoid, can be cleaned with TB cleaner.
3. Could be the transmission line check valve allowing the TC to drain low when parked.

 

[Jerry Bransford]

Perhaps the torque converter is getting locked up by its lockup solenoid. To at least isolate it to the transmission and away from the PCM I'd disconnect the 2-wire TCC lockup converter electrical connector at the very rear of the transmission and test drive it. If the problem remains it's inside the transmission, if it goes away the problem is in the PCM.