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Engine Revs/Car Moves On It's Own

This is a discussion on Engine Revs/Car Moves On It's Own within the LT1 forums, part of the Vehicle Specific category; Hey guys I got a 94 Firebird Formula, i've got a interesting little problem that even the mechanics don't really ...

  1. #1
    Junior Member abarthle's Avatar
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    94 Firebird Forumula

    Angry Engine Revs/Car Moves On It's Own

    Hey guys I got a 94 Firebird Formula, i've got a interesting little problem that even the mechanics don't really know (or want to deal with). Every once and a while I start up my car the engine revs up to about 2k-2500 rpm and slowly comes down. Just recently I was sitting at a red light behind someone and my engine started reving on its own and starting to move forward while I had my foot on the brake. I had to think quick and step harder on the brake as well as throw it in neutral so I didn't hit the car in front of me.

    Any thoughts/ideas as to what my deal could be? Loose timing chain perhaps? a mechanic said that most times the water pump leaks on the distributor and that causes problems but he didn't really look at the car he just gave his best guess. Any help here would be great!

    Thanks

  2. #2
    Senior Member 00z28bubba's Avatar
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    white
    2000 Z28

    maybe this might help, on my old 84 regal i had a vacuum leak and the idle was easily like 1500 rpms. found the leak and near 500 rpm idle returned. but it was a base model carbed 3.8 not a sfi 5.7. just a thought.

  3. #3
    Junior Member
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    Teal
    94 Camaro

    I had the same trouble I found that my elbow to the Throttle body was cracked and sucking dirt.

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    NY Representative basballny2's Avatar
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    2001 ws6

    MAF?

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