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1992 Toyota Paseo Question: idle is rough

 

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Visitor, 1.5L 4 Cylinder, Saint Augustine, FL, February 08, 2011, 07:11

recently replaced 02 sensor and idle air control valve also did tuneup before this now car idles at 800-1000 rpms but it is rough whats wrong?

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  • Answer #1

    Visitor, April 26, 2011, 01:47

    Check that you have the firing order correct as this will cause any car to run rough on idle!
    If this fails then it could be a case that your spark plug gaps are too close/ far apart from what they should be to get correct spark!
    Another good thing to check is the colour of the spark plugs to see if there is soot on the plugs as this could be a sign that the car is running too rich

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