2003 CADILLAC CTS
130,000 MILES
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ANONYMOUS
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Just changed sparkplugs from who knows when. I installed Autolite Iridium and now it mis-fires, Why???? Please Help Our Family This Holiday Season. Need our car to go to the Mission for Christmas.

uch Thanks Harry,,
Dec 24, 2012 at 1:00 AM
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ASEMASTER6371
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get the code for us. you may have a bad coil or a connection.

did you check the gap on the plugs??

Roy
Dec 24, 2012 at 1:02 AM
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JACOBANDNICKOLAS
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Did you gap the plugs? Are you sure you didn't get the electrode dirty or bump it when installing the plugs? If there is a misfire. the computer should pick up on it setting the check engine light. Then you can scan the computer to see what cylinder is missing. Then remove that plug and check it.
Dec 24, 2012 at 1:03 AM
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JACOBANDNICKOLAS
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Roy:
Sorry I keep answering the ones you already got. It shows that they still need answered when I do it. Sorry... Have a nice Christmas.

Joe
Dec 24, 2012 at 1:04 AM