1992 Pontiac Transport Repair Question
Asked on August 12, 2012
Engine temp not constant
Replaced thermostat, coolant sensor, radiator fan and fan harness and fan relay, doesn't seem as if thermostat is opening as it should. Thought day old thermostat was bad but 2nd new one doing the same thing
Answer
Replied on August 12, 2012
What do you mean by not constant?
Do you have coolant losses issues?
Answered by
KHLow2008 (expert)
40,332 answers providedReplied on August 12, 2012
No coolant loss,thermostat doesn't open all the time upper hose hard as a rock when it doesn't open.
Response from
dmnovak
1 question askedReplied on August 12, 2012
how badly did it overheat and how many times??
Roy
Replied on August 12, 2012
You should check to see if the head gasket is leaking. Get a block test kit
Answered by
djcl (expert)
788 answers providedReplied on August 12, 2012
Caught the overheating(once)in time head gaskets replaced 10000 miles ago
Response from
dmnovak
1 question askedReplied on August 13, 2012
Is the replacement thermostat OEM? I believe you should be looking at it one more time.
Answered by
KHLow2008 (expert)
40,332 answers provided
Replied on August 13, 2012
Why OEM
Response from
dmnovak
1 question askedReplied on August 13, 2012
Quality of thermostat matters.
Answered by
KHLow2008 (expert)
40,332 answers providedReplied on August 13, 2012
Ok thx I will get an OEM
Response from
dmnovak
1 question askedReplied on August 17, 2012
even new thermastats can be bad right out of the box. Would get a OEM like KILlow says. It may also cause the temp sending unit to mess up. check any wires. After replacing the thermastat check the guage if it still does it the sending unit could be going bad.
Answered by
M_H_RITZEL (expert)
2,684 answers provided 