Griff735

I have a 97 xj with 300k miles on it. I just purchased it three months ago. Three days after I bought it i was told by the transmission shop my tranny needed to be rebuilt. instead of having it rebuilt for 2500 i bought a used one for 275 and had a shop put it in. Now two months later my tranny is acting up again.

It makes a whining noise that gets louder as the rpms go up. sometimes it will only drive in 1-2 not 3 or drive. sometimes it has trouble shifting, it will rev and once it gets to much i let off and then eventually it will shift. I did a engine coolant drain and fill and some coolant spilled all over the engine (god damn dogs) so I am worried that it may be something electrical. Please help me. any information would be helpful!!!

DFlintstone

You probably need more help than I can offer. You can check the connection to to your TCU. Mine is under the glove box. I think you have a fuse somewhere for it. Might be in the power dist center under the hood? Then there are wires running down to the trans on the pass side behind the dipstick. Spray out and dielectric grease on those connections. Also see if your fluid looks funky or burnt. You could change the fluid and the filter inside the pan. Also the TCU and a bunch of other important stuff grounds there by the dipstick. That actually could be first an the list. Take a little time making sure the grounds are good. Nothing will work right without a circuit. Sorry man. Bummer to fix it then have it broke!

also search "adjust AW4 kick-down cable" or something like that.

OH! And the TPS has a trans side, affects shifting

Griff735

So I came up with three codes.

P0121
Throttle/ pedal position sensor range/performance

P0700
Transmission control system

P0756
Shift solenoid b performance or stuck off

And a new symptom is it idles at around 2k now do I think I will start with the tps. Any thoughts?

EastBeast

The 700 code indicates the TCM has a code stored in it. I would start with a real good check of the wiring and connectors you might get lucky. The keyword that makes me suspect the wiring is you said "sometimes".

Griff735

Ok so I've switched the solenoids and the tps. And it runs a ton better but the small wining still and the idles is still way high

Griff735

Does the trans have any vacuum hoses?

Cherryokee

It's good that you replaced the TPS first. Ignore the other codes until you've got correct throttle/idle behavior. You're not done with sensors yet. Clean the throttle body and the IAC bore too. If you never cleaned your IAC and bore before then I'll advise you to be careful with it and do not manually actuate the IAC pintle while it's out.

austinjoe13

Get it flushed before you go and replace or rebuild it. It might just have some clogged valves.

Griff735

And can anyone tell me where the throttle valve is located?

Griff735

And can anyone give me some incite to where the throttle valve is located

iansmellis

Throttle valve?

iansmellis

Ahh NVM... I google searched "throttle valve" and it showed me hehe.

From what I see on google, the trottle valve is located inside the throttle body, Its the thing that opens and closes to let more or less air in.



This is a Grand Cherokee TB but what your throttle valve is is the circle plate in the middle of it.


Anyone PLEASE correct me if I am wrong.

austinjoe13

I believe you found the idle air controler. This is what you want:
http://www.allpar.com/SUVs/jeep/cher...nsmission.html

iansmellis

Thank you!! :-) :-)

Griff735

I got it done!!! And it runs amazing!!! I would just like to thank everyone for their help!!! Thank you!!!