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Old 01-30-2012, 09:20 PM   #2
SamE30e
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Join Date: Jul 2007
Location: Milton
Posts: 2,870
Coolant temp sensor to the ECU. This would cause the car to run rich, poor gas mileage, down on power and maybe a bad idle when hot.

There is 2 in your cylinder head, next to eachother. The one with the blue connector is the ECU one, the other is for the gauge on the dash.
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