Problem with RPM surging
#1
Problem with RPM surging
On my 06 TL the RPM will surge when i am going about 40 mph. it does not happen when i accelerate. It only surges up approximately 2-300 rpm. i replaced my throttle position sensor about 6 months ago. Any one able to shed light on this? Thanks
#3
does it feel like its downshifting to 2nd gear? i replaced my aap sensor now my car shifts hard and sometimes goes straight to second even on freeways feels like im gonna blow my motor.
#4
No. It normally happens when it is cold at about 45 mph while at an even speed. Really only surges about 150-200rpm. I am pretty sure that it also happened before i replaced my throttle position sensor.
#7
Instructor
Just did a little searching, looks like its the torque converter locking and un-locking. Speed up or shift into 4th to take it easy on your torque converter and keep the tranny cooler.
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