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Old 12-12-2006, 07:49 PM   #4
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Join Date: Dec 2006
Location: Belleville, Illinois
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Re: Geo Metro Code 15 Help.

I have 2 1994 Geo Metros with the same problem - the check engine light is on with a code 15 - coolant temperature sensor - overheat. They both run cool. I have replaced the sensor - no help. I have also tested the new and old sensors with ohm meter at verius temps on stove with a thermometer - all check good. Any ideas?
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