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Can a TPS cause a slight miss?

on a 89 Mercury Grand Marque ? I have replaced the plugs,wires and cap,and rotor button,all of the injectors and idle control valve. Is the TPS one of those things that is either good or bad,or can it cause problems without being completely bad ?


3 Answers

  • 1 decade ago
    Favorite Answer

    TPS is one of those things. When you replaced your Idle control Valve did you clean out the area whe the valve sits? Carbon builds up here and if not cleaned can cause a miss

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  • 1 decade ago

    Sometimes, but I would check your plugs. Start the engine and pull a wire (with insulated boot removal tool) notice any difference? do 1 wire at a time until you pull one and it makes no difference. That would be your bad plug. Gives you a place to start though....good luck.

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  • Anonymous
    1 decade ago

    Like I said in the past post you made, you did all of that and failed to check compression?

    Get to it!!!

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