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Rough Idle in 2001 Eclipse GT Spyder?

After I've been driving even a little, when I put my car in park, it idles really rough and I can see the tachometer dipping between 1,000 and almost 0. What can cause this?

Update:

When it dips, it doesn't stay there...it kind of fluxuates between dipping and revving on its own.

2 Answers

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  • 1 decade ago
    Favourite answer

    sounds like your car is misfiring, i would say first to check your spark plugs and your plug wires, mine 98 eclipse was doing the same thing and it ended up being a bad wire.

  • 1 decade ago

    You could have a bad spark pug, try changing the plugs.

    Clean your throttle body by the mechanic using a toulene based spray.

    Your airfilter could be terribly clogged too, so please check and replace.

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