lanthony2020
New Member
It was suggested over on LostJeeps to post this here.
Recently purchased a 2005 Liberty 2.8L 4x4. 139,000 miles, complete maintenance record, like new in and out. Read all about the transmission problems and EGR stuff. Decided to dive in and go for it! I have wanted an off road diesel for many years.
What did I get: Nice looking and seemingly running machine. Transmission shifted good so I bought off on a Sonnax line pressure kit. Told this would help high mileage Liberty Auto-******. Very simple external plug-in. Results: Not to noticeable, still shifting good. Mileage seemed a bit low. I think 15-21 MPG. Very mixed driving and experimenting.
Had been in contact, with a myriad of questions, with GDE. Finally said OK to the Eco Full-Torque tune and added the towing transmission TCM. I installed the Tune, mechanic installed the TCM. Main mechanic was gone for TCM install so no computer reflash. Thought it would learn. Also had mechanic pull MAP and clean it. It was a solid block of hard soot. He cleaned it up and reinstalled.
Results: Seemed OK but 2nd to 3rd gear shift seems to be like an old "double clutch." It would die and then jerk your neck forward. It was annoying. Called GDE. They recommended a "Quick Learn" on the TCM. Found a mechanic with a Snap-on tablet. We went right through the menus to 2005 Jeep Liberty 2.8L Transmission/ and "Quick Learn" was an actual option. He performed this while I was waiting. The computer started shifting the transmission as he had his foot on the break and wau-lau, he was done. 35 bucks.
Results: Shifting perfectly and now precisely as GDE described for the "Tow" ****** tune. The whole thing really came alive. Really strong on Lone Rock Beach. I really like this thing now.
MPG: Going from Page, AZ to Flagstaff, AZ and back, bucking a side-wind. 600 lbs. on board, just over 32.5 MPG!!! This driving almost all the way at 68 mph. About where the TCM tune goes into 5th gear. Love this setup. Could not be happier.
LN
Recently purchased a 2005 Liberty 2.8L 4x4. 139,000 miles, complete maintenance record, like new in and out. Read all about the transmission problems and EGR stuff. Decided to dive in and go for it! I have wanted an off road diesel for many years.
What did I get: Nice looking and seemingly running machine. Transmission shifted good so I bought off on a Sonnax line pressure kit. Told this would help high mileage Liberty Auto-******. Very simple external plug-in. Results: Not to noticeable, still shifting good. Mileage seemed a bit low. I think 15-21 MPG. Very mixed driving and experimenting.
Had been in contact, with a myriad of questions, with GDE. Finally said OK to the Eco Full-Torque tune and added the towing transmission TCM. I installed the Tune, mechanic installed the TCM. Main mechanic was gone for TCM install so no computer reflash. Thought it would learn. Also had mechanic pull MAP and clean it. It was a solid block of hard soot. He cleaned it up and reinstalled.
Results: Seemed OK but 2nd to 3rd gear shift seems to be like an old "double clutch." It would die and then jerk your neck forward. It was annoying. Called GDE. They recommended a "Quick Learn" on the TCM. Found a mechanic with a Snap-on tablet. We went right through the menus to 2005 Jeep Liberty 2.8L Transmission/ and "Quick Learn" was an actual option. He performed this while I was waiting. The computer started shifting the transmission as he had his foot on the break and wau-lau, he was done. 35 bucks.
Results: Shifting perfectly and now precisely as GDE described for the "Tow" ****** tune. The whole thing really came alive. Really strong on Lone Rock Beach. I really like this thing now.
MPG: Going from Page, AZ to Flagstaff, AZ and back, bucking a side-wind. 600 lbs. on board, just over 32.5 MPG!!! This driving almost all the way at 68 mph. About where the TCM tune goes into 5th gear. Love this setup. Could not be happier.
LN