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-   -   04 KJ trans issue (http://www.jeepgarage.org/f77/04-kj-trans-issue-60381.html)

stevusprime 05-22-2013 10:36 PM

04 KJ trans issue
 
I have an 04 liberty limited...it is stuck in "sneaker mode"
I bought the jeep with a rebuilt transmission he said he had it rebuilt because of this issue, when I test drove it everything was fine..
These codes are from when it would sometimes shift passed second
Day #1 codes:
P0700 transmission controller fault
P0734 gear ratio error in fourth
P0846 2-4 pressure switch sense circuit
P1776 solonoid switch valve stuck in LR
P0731 gear ratio error in first
P0733 gear ratio error in third
P1790 fault immediatly after a shift

I cleaned off almost every electrical connection on top and I even pulled the input/output sensor on the side of the trans...
Now that it is stuck in second these are the codes

Codes are now:
P0700
P0731
P1790
P0841 L/R pressure switch sense circuit

Has anyone ever came accross this or know of anything I can do (test connections, etc.)
Thanks

Frango100 05-23-2013 09:18 AM

Re: 04 KJ trans issue
 
Not.familiar with the KJ, do you know which transmission it has? The P0700 code only tells that the TCM has set one or more faults, its not a failure code of the TCM itself. P0731 is a code which is set when the ratio between input and output speed is not as.expected, which normally means a slipping clutch pack, but could eventually be caused by a problem with one of the speed sensors.
Depending on which transmission you have, i could maybe tell you a bit more.
But first thing, did you check the fluid level and smell the fluid for burned smell?

stevusprime 05-23-2013 01:30 PM

Re: 04 KJ trans issue
 
The fluid is full...it was over full, but I dropped the pan and made sure it was filled right...I have to get in touch with the tranny shop cause I put in ATF+4 and it seemed to help for a day then it acted up again
It has the 42rle I think it is called
The fluid smells funny but it doesn't look brown or cloudy or smell burnt at all

Frango100 05-23-2013 05:41 PM

Re: 04 KJ trans issue
 
Does the 42rle not only have an output speed sensor? Are you sure its the 42 rle?

stevusprime 05-23-2013 11:32 PM

Re: 04 KJ trans issue
 
It has an input and output speed sensor...according to all of my research it ic a 42RLE
Its an 04 liberty limited 4x4 I'm pretty sure it the only tranny they have, I could be wrong though

Frango100 05-24-2013 07:03 AM

Re: 04 KJ trans issue
 
I know that the Liberty can have the 5-45rfe as well and that one for sure has two speed sensors on the left hand side of the transmission housing. How many gears does it have? The 42 has 4 gears, while the 5-45 has 5. There is also an identification plate on the side of the transmission.
Do you still have guarantee on the rebuild?

stevusprime 05-24-2013 08:19 AM

Re: 04 KJ trans issue
 
Yes I have a 1 yr. Warranty on the rebuild...
I no the trans has a stamp on it but I didn't see any plates when I was looking at it last night, its at home right now ill take a look asap

Frango100 05-24-2013 10:50 AM

Re: 04 KJ trans issue
 
Quote:

Originally Posted by stevusprime (Post 828403)
Yes I have a 1 yr. Warranty on the rebuild...
I no the trans has a stamp on it but I didn't see any plates when I was looking at it last night, its at home right now ill take a look asap

On mine its in fact a placard on the same side where the speed sensors are.
But since you are still in warranty, i would let them look for the problem.

THAT_XJ_GUY 05-31-2013 04:34 AM

Re: 04 KJ trans issue
 
That has a 42rle. It sounds like the solenoid pack has an issue. P0846 and P0841 are normally caused by a bad solenoid pack.

545rfe only came in 02' and early 03' gas, and all diesel KJ's


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