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Re: OT: Another 3.8 GM engine question
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Posted by Vern-MI on April 25, 2006 at 10:11:01 from (207.69.136.200):
In Reply to: OT: Another 3.8 GM engine question posted by Markuss on April 25, 2006 at 09:05:12:
The first thing to do would be to see if there are any codes being thrown. Poor mileage can be traced to bad thermostats, engine temperature sensors, coolant temperature sensors, and dirty injectors. Sensors have to out of their normal operating voltage range in order to show up as bad. So if the range is 1 to 3 volts and the sensor is stuck on 1.5 volts it won't show up as bad.
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