Last post on Nov 02, 2013 at 4:18 PM
You are in the Jeep Liberty and Jeep Liberty Diesel
What is this discussion about?
Towing, Transmission, SUV
#175 of 181 Jeep CRD Shudders during mild acceleration through 50MPH
Dec 18, 2012 (11:40 am)
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.
Apr 05, 2013 (3:43 pm)
I have a 2007 Liberty converted to RHD for mail delivery. After 3+ hrs of stop & go it will attempt to shift from 2nd to 3rd and not complete the shift. Once out of 2nd gear it will not drop into 3rd. The engine revs up and will not finish the shift until I take my foot off the gas and engine revs drop. Usually only happens once or twice a day. Some days no problem. No obvious sequence of events to reproduce the problem. Valve body, filter and fluid were replaced with no change. 45000 miles on vehicle.
#177 of 181 Tranny problems
Oct 02, 2013 (10:34 am)
I have owned a 2004 jeep liberty since 07 and had no problems with it at all till now, the thing is that the automatic transmission will shift but the thing is that in order for it to go from second to third theRPMS go all the way to 5 or 6 until it shifts once I get to third it seems that it won't shift to fourth gear and the RPMS WILL STAY AROUND 6 without shifting I wonder if any of you guys have had this problem and how have you guys solved it I'm really frustrated cuz I love the damn thing any response will be gladly accepted
#178 of 181 Re: Tranny problems [alexsaban]
Oct 02, 2013 (12:02 pm)
What engine and transmission do you have? 2 or 4wd?
Is the TCM/ECM setting any codes?
What your describing could be caused by any number of things. Starting with the easy stuff, the most likely cause is the tranny fluid level. Confirm that you have enough and that it's the correct type for the tranny. If the fluid is the correct type, relatively fresh, and the fluid level is correct, make sure the shift cable is correctly tensioned. I doubt its the shift cable, but it's worth checking.
Depending on your mileage, you may need a rebuild....
Again, it's tough to say, without plugging into your ECM to "see what the ECM/TCM is seeing and what it is commanding your tranny to do".
#179 of 181 Re: Tranny problems [alexsaban]
Oct 02, 2013 (4:23 pm)
Yep. I have had the same problem. Exact same symptoms. I went back to the dealership. Their solution was to replace the valve body and reflash the computer. $1000.00 later they sent me home and said, " You will have to teach your jeep how to shift again." OK sounds like BS but after a week or so it did stop, BUT, I have to wonder if just reflashing the computer would have worked. After 6 months of smooth shifting I am starting to have the same problem. I can't believe that the valve body has failed again.
#180 of 181 05 Liberty trans issue
Nov 02, 2013 (3:09 pm)
My 05 liberty 3.7 is having trans issues. Was in the drive through line at Mc d's when I let off the break and hit the gas all it did was rev. Put the car in park and back into gear and no issues. Driving seemed fine then another stop at a stop light, same issue. Idea's???????
#181 of 181 Re: Tranny problems [marcky]
Nov 02, 2013 (4:18 pm)
Thanks for your ideas marcky, yep my lib is a 4wd and it has 175000 ,miles on it so I'm assuming is all wear issues I'm having, I will rebuild the transmission and I'm looking into the parts right now, hopefully that will solve the issue if the issue is not fixed then my next option will be make a conversion into a 5 speed manual transmission. By the way what brand name would you suggest for me to get that transmission rebuild kit.