Question about 2001 Volvo S60

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I have a Volvo S40, I've changed the wires that connect to the spark plugs; I put new iriduim plugs in, added fuel injection cleaner and the car continues to misfire. I hate to take it to my local Volvo dealer because they gave me erroneous information and it seems they just want to charge me exhortbitant amounts for repairs.

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You may have a bad ignition coil or possibly a bad coolant temp. sensor. You can check for a bad coil by removing the covers for the plugs and gently lift the individual spark plug wires from the plugs while the engine is running. With the wires lifted off the plugs a small amount you should hear the spark making a ticking noise. If you lift it to far it could seriously shock you so be carefull.

If it's a bad temp. sensor the dealer will have to monitor the sensor and check it with a non conotact thermometer to verify it is correct.

Posted on Feb 28, 2009


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