Question about 1999 Pontiac Grand Prix

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1999 grand prix gt 3.8v 6 error codes 300 and 302

1999 grand prix gt 3.8v 6 error codes 300 and 302 help

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The PO300 code is random/multiple cylinder misfire detected. Sinsc you have the code PO302, that means that cylinder 2 is the one misfiring, usually a bad coil pack, or spark plug.

Posted on May 12, 2010

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run fault codes and check for cam/crank position sensor check that the cam shaft is turning (broken timing belt/chain) Check immobliser operation.

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Mar 09, 2010 | 1999 Pontiac Grand Prix

1 Answer

1999 pontiac grand prix gt dual climate control not working prope


The sensor is located near the hood latch area in front of the radiator. If the temp is reading incorrectly, chances are it is defective. You can purchase a new one, they relativly inexpensive.
Disconnect the electrical connector then remove the sensor.
Good luck, let me know.
Regards,

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