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I have a 1989 chevy s10 pu 4 cyl 2.5L engine. Over 220K. I have replaced sensors, EGR, MAPS, etc., thermostat, water pump, radiator, heater core and still my temperature guage light comes frequently (not all the time) faintly or brightly. My code is 32 which concerns EGR and so forth. What may be the problem here? I haven't replaced the head gasket.

clarke

Submitted: 1178 days and 23 hours ago.
Category: Chevy
Value: $15
Status: CLOSED
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Accepted Answer

There is a switch in the cylinder head that operates the temp light.Either it is bad or the cluster is bad.You should take an actual reading in the radiator when it's on.Be careful run it with the cap off until the light comes on and then check it.Don't open the cap on a hot engine you will get burned.On the egr there is a solenoid that the vacuum hose comes from.That's what's probably bad.If the thermometer reads over 240f replace the head gasket it's about all that's left.

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Expert: Davo
Pos. Feedback: 97.7 %
Accepts: 
Answered: 9/1/2006

Master technician

ASE Master Technician also L1 Advanced Engine Performance Specialist

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