Long time lurker, as this forum has been a huge help in solving past problems with our '04 Jeep Liberty. Hoping maybe you guys can do it again!
We got our Jeep used about 3 years ago from a car auction. It's been a great vehicle for us, never really giving us any issues until recently. Over Christmas, we had to replace the entire drive shaft, fix some coils, and do a general tune-up. About a month ago, we noticed that the check engine light popped on and it was shifting into OD a little harder than usual. We get the codes pulled at Autozone and here's what we got:
- P1790 Fault immediately after shift
- P0700 Transaxle control system fault, received a signal that the transaxle control module has a fault, probable cause shortened or open circuit within transaxle
- P0734 ECM has detected that the transmission input RPM does not match the transmition output RPM
- P0740 Torque converter clutch circuit condition, TCC unlocked fr 10 seconds, ECM commands converter lock-up and did not record engine speed drop
I called the Jeep dealership, and after being blown off by the service manager a handful of times, he finally tells me to top off my fluid levels and see if that helps (his advice based on the codes it pulled), and to call him back if it doesn't. It didn't. And I can't seem to get him (or anyone at that dealership) to actually return my calls.
In the mean time, the Jeep is now having issues shifting into OD at all, and sticks in second or third gear often. I've been on this forum looking around and found that a lot of people who experienced this did a fluid and filter change (we've never done one since getting it 3 years ago) and replaced the TPS, which solved the problems.
Last week I called a local shop who comes highly recommended to us and who only charges for labor (and fairly-priced, too!) if you bring in your own stuff. We've got the TPS, the filter, fluid, and all that he needs to get it done, but it's going to be a week before he can get us in (our appointment is tomorrow afternoon). I had to drive it to work today, and on the way home it almost never shifted into OD, I could barely accelerate from a stop, and it's hitting 3k-4k RPMs at barely 20mph.
We don't have much money, and I have this horrible fear I'm going to have to pay for a whole new transmission.
I guess my question is for anyone who has experienced any issues like this, did the TPS/fluid & filter change help, did you have to do a whole new transmission, was it a clutch issue, etc? Just trying to have an idea of what I'm looking at before I actually go in tomorrow (and to figure out what organs I have to sell on the black market to pay for it all). Thanks in advance!