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1999 Ford Escort Question: pre ignition

 

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Cosmos, 4 Cylinder, Houston, TX, March 23, 2009, 19:04
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my car knocks, even with premium gas. i have checked all vacuum hoses and cleaned the throttle body and EGR. What else can I do?

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  • Answer #1

    hemicuda March 26, 2009, 15:47
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     Master

    Probably the mass airflow sensor is bad, Napa has rebuilt units available $108 to $139 plus a core charge, about 1/2 hour to replace

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