my 91 mazda 626 the engine is revving while driving

Asked by baldguy25 Dec 26, 2007 at 10:11 PM about the 1991 Mazda 626 LX Hatchback

Question type: Maintenance & Repair

while i am driving the rpm's will jump from 1500 to 4000 for just a second does anyone out there have any ideas to fix the problem

papa answered 16 years ago

probley a sensor on transmission going bad,or something going on inside trans.have it checked by trans shop or mechanic you trust.

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84,375

littlehorn answered 16 years ago

Have the throttle position sensor checked. Also, make sure the engine is actually revving that high -- is it accompanied by a different engine sound? It's not unheard of for the tachometers to go bad in the dash cluster -- I had one in a Chrysler Sebring that literally had a mind of its own after about 70k miles.

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