Last post on Apr 05, 2013 at 4:43 PM
You are in the Jeep Liberty and Jeep Liberty Diesel
What is this discussion about?
Towing, Transmission, SUV
#166 of 176 Re: transmission not shifting [roadrunner2020]
Sep 04, 2012 (5:46 am)
My 2005 Jeep CRD transmission was acting up and kept throwing very strange codes (temp sensor failure, among them) and shifting oddly (wrong shift decisions for the load, throttle position, and/or RPM). Ended up replacing the solenoid pack and that resolved everything. It was a bolt-on repair, but required removing the bottom of the transmission (valve body) to reveal the solenoid pack; $240 for the part and about 4-8 hours of wrench-turning (depending on how well equipped your garage is).
Roadrunner, it sounds like you have a TCM and/or Solenoid Pack and/or wiring harness issue. Is the ECM setting any code(s)? It must be. I am not an expert, but locking in first gear sounds like a "limp in condition" or a failed/failing solenoid pack. If the signal from the TCM to the solenoids isn't being honored, that could be causing your condition.
#167 of 176 Re: transmission not shifting [marcky]
Sep 04, 2012 (5:52 am)
Almost forgot: All of my comments assume two important items: 1) the transmission is otherwise healthy and 2) the shift selector and shift linkage is correctly tensioned/adjusted. If the linkage for your shift selector (shift knob) to the tansmission is loose, it will wreak havoc.
#168 of 176 i have the same problem
Sep 22, 2012 (8:13 pm)
i have renegade 2003 and since a few days stop shifting i change the selenoids pack., filters ...... and more and still the same problem . you r talking about some wire harness could u please give me the name of them of the number parts of the wire please ......
Sep 22, 2012 (8:15 pm)
please i all ready change selenoids pack ,,,,, some help with the wire harness for my jeep renegade 2003
#172 of 176 Re: transmission not shifting [marcky]
Dec 17, 2012 (8:06 pm)
Hello Roadrunner can u tell me the part number for the solenoid pack ? and where did you buy it ? thanks joe
#175 of 176 Jeep CRD Shudders during mild acceleration through 50MPH
Dec 18, 2012 (12:40 pm)
This question keeps popping up, so I thought I would start a new thread.
You guys are definitely experience torque converter issue aka TC chatter. In our jeeps, the TCU signals the torque converter to lock-up (by openning a solenoid and allowing pressurized tranny fluid into the TC). The factory set point for TC-lockup is around 52'ish miles per hour. Under light acceleration, especially when towing, my truck used to try to TC-lock up and you could feel and hear from pretty ugly shuddering. I noticed that, once past that 50'ish speed range, I didn't have the problem.
One person mentioned that turning off the OD helped. That's diagnostic of the problem; turning off OD instructs the TCU to never TC-lock-up.
I did try running a couple of thousand miles with a friction modifier, that doesn't help. The TC is metal-on-metal, not tranny clutch material.
I did some checking and my factory 2005 CRD TC was replaced under the recall with the "more robust" TC and (I am guessing) the dealer applied the detune flash to the ECU to drop the engine torque output by 10%. That's what the recall called for; nerf your turbo.
If you continue to have this problem, the only ABSOLUTE way to fix it is to increase the line pressure in the Tranny by putting a resistor on the "tranny pressure valve" (it's a solenoid that increases the pressure throughout). There is a shift kit out there that also replaces the accumulator springs for more snappy shifts (which will also improve your tranny life span). And..... probably replace your TC with an after-martker (ehem *cough cough* properly engineered *cough*) component. If TC replacement becomes necessary, I stronly recommend this http://www.suncoastconverters.com/shop/jeep-liberty-diesel-torque-converter/
These suncoast guys have built stronger TC's that will stand up to the pummeling from a torque-ey CRD.The Green Diesel guys recommended this part so as to handle their "FT ecotune" that takes the motor up to 335 ft/lbs of torque, even in lock-up.
Good luck all. Hope that was helpful.