The transmission doesn't feel like it's slipping but it is very sluggish on take off or if I start it on an incline. It has been doing this ever since I owned it (4 years now) but I finally want to get it fixed. I ran the diagnostic trouble codes and got : P0740, P0753, 758, 785 and 1860. I saw a post somewhere about the ignition switch could also be a problem. The ignition switch has been replaced twice (neither time but experts). The last replacement works but the key still needs a few twists to remove it. Anyone out there with any advice would be greatly appreciated.
The good news is that it is an electrical problem rather than a mechanical problem. So, you should be able to get the problem taken care of without removing the transmission. The bad news is, you'll probably have to take it to a tranny shop to get the electrical bug worked out (unless you have the knowledge/equipment to test each of the electronic components of the tranny).
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you need to repair no 1 cyl. misfire it will misfire when engine load is present. if you want to test it .push brake pedal engine running and shift into forward gear and with the other foot raise rpm to 2000rpm you will feel the misfire
hope it helps
Jeeps have electric solenoids inside the transmission, (shift solenoids) I would have the jeep tested at the advance auto or autozone for codes if the check engine light is on; (its free) and go from there. sounds like the jeep may be in limp mode which chrysler created to protect the transmission. limp mode will not allow the jeep to shift all the way up to overdrive or shift all the way down to 1st shifting position. feels like it has to get going over25 to move well . AAMCO transmissions will diagnose your jeep for free in most states.
Release your parking brake :) Just kidding. Next time it does this sluggish thing, Put it in reverse and apply your brake, firmly and safely.then see if its still sluggish going forward. don't hit the brakes or hold then when you dhift to drive but don't dally and give the guy you just backed into a chance to get to you. Kidding. Ok, no more joking Starting out from a forward stop, vehicle feels sluggish. Stop vehilcle and back up a few feet stopping firmly. Now realese foot brake and put in drive, DON'T REAPPLY YOUR BRAKES SHIFTING INTO DRIVE.see if sluggishness is still present. If it is, Your rear brakes may not be fully retracting or they are over adjusting,adjusted. Automatic brake adjusters sometimes like to over do it. If your trans fluid is low, then maybe it can feel funny but not held back. If the back and forth thing provevs to free the brakes then have the brake checked. But seriously, to save embarrassment make sure your parking brake is FULLY RELRASED. Good luck and please let me know if I've helped you.