Quote:
Originally Posted by Erik Nelson
It is not a transmission issue, the trany shifts fine.
It is like the throttle is overly sensitive.
Even w/ the cruise control on, it either has too much throttle or too little. The car surges forward or falls back.
Also, when it is acting up, the vacuum gauge sinks farther into the red than usual. Give it a tiny bit of throttle, and the gauge swings into the red. So I am thinking a vacuum issue.
This is an intermittent thing, worse on cold days.
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If the car was delivered outside the USA, there is an outside chance that it is equipped with ASR (anti slip, aka traction control) and that that circuitry and the throttle actuator is misbehaving.
If it is a US model, first try removing the link between the cruise control actuator and the rest of the throttle linkage (pop off two ball ends). then check that the throttle linkage moves smoothly thru its range. Drive with the cruise control link removed. Any improvement?