Question? I have an 05 TB with 126k. Evrything is maintained to factory intervals. When we drive the TB on the freeway and are going a consistant speed and the trans is in overdrive, we can feel the engine or trans surging. Its like it is gently going up and down in rpms where you can hear it and barely see it on the tach but the TB does not increase or decrease speed. Its a droning sound wahhhh wahhhhh wahhh etc but is for sure an engine or trans causing the engine to do it. No bearings as i checked for wheel play and they do not move(amazing for 126k and never gone bad yet). No engine lights or codes. Has new plugs. Also when it starts up in colder weather, you can hear some crazy noise in the trans, almost like the fluid is being forced somewhere and then everything is great. Can a bad pump or trans parts cause this surging? I know this is so general in nature but i think the surging issues will relate to the start up noise. I have not noticed any loss of power, just the erratic surge and sometimes on acceleration is not a responsive when edal pushed and then its says "oh" and speeds up after the fact of gas pedal being pushed. Almost like a delayed reaction for the accelerator. The throttle body is regularly cleaned.
thanx in advance
thanx in advance