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Old 09-01-2010, 12:48 PM
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richtazz richtazz is offline
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Re: 1989 pontiac gran prix

Sorry Wango, but with close to 10,000 posts, I'm not sure as to what past you are referring. Is your Check Engine light on? If so have you pulled the codes stored? If not, the most common cause of this issue is the ECM (Electronic Control Module) commonly referred to as the computer. On this particular car, they are mounted under the hood, therefore being subjected to moisture, salt, etc...(especially since you're in MI) If the OEM part number on your ECM is 1227727, there is a very good chance it's your issue, as it the most problematic of those used in this particular car.
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