Engine's High Revving Between Gears


Our Mazda Tribute revs up to 3000 RPM while shifting gears. Not sure why – has this happened to anyone? I’m bringing it in tomorrow, but if anyone has suggestions, I’d love to bring them to the garage. Thanks!!


It would certainly be useful to know whether you have automatic or manual transmission, whether this problem occurs only between certain gears or between all of them, whether it occurs on upshifts, downshifts, or both, and so on.

I suppose these questions really need not be answered since you already have an appointment with a trained mechanic. We would nevertheless be interested in hearing what he has to say.


It’s a manual – that’s why I was shifting. :slight_smile: I’d appreciate any suggestions that people might have b/c I don’t know much about cars and I want to just have an idea of what might be wrong, so I can make sure I’m on the right track with the mechanic.


And it’s happening between all the gear shifts.


[b]The problem might be with the Idle Air Control motor.

Anytime the accelerator is released, such as between shifts, it’s the responsibility of the IAC motor to control the idle speed. If the IAC motor fails to go to the proper position for the idle condition, the idle can go out of control.



I think Tester nailed it. If you have a high rpm when the engine is warmed up and the car is stopped and in neutral, replace your IAC.