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Thread: 97 1.8 High Idle

  1. #1

    Default 97 1.8 High Idle

    So I've gotten my car running pretty smooth. It was idling fine around 800~ depending on if the a/c was on or off. Saturday night after I wiped a quick 180 the idle shot up to 2k and has been holding steady there.

    I got carb cleaner and sprayed every vacuum line I could find with no detectable idle change. I didn't have much left with what was sitting on my shelf so going to buy another can tonight and spray all over again. (Intake gasket for sure I didn't spray it at all last time.)

    I have a spare tb with tps/iac on it. So I may swap the whole thing over and see if anything changes. Any other suggestions ? Car is running great otherwise.
    1997 Miata - Weekend\Autox Car
    1994 Mustang Cobra - Garage Shelf
    2012 Mazda 3 - Daily

  2. #2

    Default

    I swapped to another tb with a diffrent tps and iac and the car wants to idle at 5k now with adjustment screw all the way in.

    I bench tested this tps and it seemed fine. Also used a can of carb cleaner before I swapped the tb and found no leaks.
    1997 Miata - Weekend\Autox Car
    1994 Mustang Cobra - Garage Shelf
    2012 Mazda 3 - Daily

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