As I was driving my 2001 Mazda Tribute today I was pulling up to a red light and I depressed the clutch pedal as I came to a stop. Once the clutch pedal was depressed the revs suddenly shot up to 3000rpm without any accelerator engaged. Since then it has happened whenever I do the same and the revs will not drop unless I engage the clutch in gear or I let the clutch pedal up upon which it will very slowly decrease in revs to the normal idle engine speed. As I am driving the car now feels like I have cruise control (it doesn't!) as the car will not naturally decelerate even though there is no accelerator engaged.

I thank you for any help you can give me in advance as if it is a simple fix it could save me a trip to the mechanic!


  • Possibly an air leak on the intake somewhere. – HandyHowie Nov 22 '20 at 21:14

Throttle body needs a serious cleaning. Gunk or some sort of residue is sticking your throttle at 3000 revs. Disconnect the rubber intake tube assembly and use a good quantity of throttle body cleaner and a couple of squirts of wd-40 to ensure the throttle mechanism itself is free and operating normally. Your vehicle being 2001 vintage I assume that it is not drive by wire like most if not all new models are now.

If it were a drive by wire system this would require a reprogramming of your engine computer in order to recalibrate all the various sensors and the idle speed etc.

One thing I would also reccommend is changing the rubber intake tube assembly (not sure if that is the exact technical name for that part) because after about 6 years of hot and cold cycles with numerous cycles flexing the rubber starts to deteriorate developing cracks in the rubber folds causing air leaks eventually triggering a check engine light.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.