After driving for a while, such as half hour, the transmission does not shift properly anymore. Usual operation at startup is quite good and not any sign or jerkyness or error message. The first 10 to 15 minutes the transmission works fine, also it does not feel jerky in any way.
Shifting is also still carried out smooth, however the shifting point is much too high, I need to rev the engine to about 3 to 4K before shifting occurs. Usually it would shift much sooner, around 2K to 2.5K I believe? It definitely feels wrong.
It means I drive on the highway only in 2nd or 3rd gear at very high revs. Need to push the pedal hard to force gear shift at v. High revs, up to 5K sometimes.
Shifting down would also occur too soon when coming from higher gears, leading to a jerky braking at traffic lights as the revs are too high on the downshift. But this issue is more irregular whereas shifting up becomes a constant problem after running the car for a while.
I also tried to change gears in manual mode.
When I want to shift into i.E. 3rd gear at revs below 4K it would not engage the gear and the display would show a drop back to 2nd after 3rd was shown on the panel for a brief moment. I felt that 2nd gear was still at work. Same applies to shift gear 1to 2, 3 to 4, etc. I can only do the manual mode shift at high revs (min 3.5 to 4K)
Have had the problem checked and the transmission cleaned, oil cooler replaced, filter replaced etc. Cost a lot of money but problem re-occurred immediately on my way home after I picked up the car and drove for over 30 mins.
what could be the problem here? Computer did not produce any error messages either. Could it be a rev sensor, or any other component not directly in the transmission? Do I need to get the transmission disassembled?
It started at 65K miles and I drove it to the repair shop immediately. There it was in for a few days and they changed a few things on the transmission such as coolant, filter, oil cooler. Also the diagnosis didn't show any error message. When I picked it up, after driving for 30 or so minutes without any problems, the same thing happened again with the problems described and now I am waiting what to do and if I should let them dismantle the transmission or could it be a software issue (would be strange though that shifting always works fine in the first 15 minutes?)
Please please help, had already too many problems with this car and spent a ton of money on repairs too :(
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Saturday, May 24th, 2008 AT 8:32 AM
