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Old 07-14-2023, 10:12 AM
dibenso4 dibenso4 is offline
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92 Claret Head Gasket Replacement Temp Gauge Fluctuates

Hey guys haven't been on in a while. Just finished a head gasket job on my 92. It drives great so far, engine seems sealed up well, no leaks, amr radiator. The only problem I'm getting is a fluctuating coolant temp gauge. Every now and then it raises to a little under 3/4 of the way up on the temp gauge, then slowly goes back down to exactly halfway, I know the normal running temp is just under half. Let me know if you guys have suggestions. One thing to note is the thermostat is a "heavy duty" Motorad thermostat from rockauto. The way it overheats then cools down, there's almost a pattern to it. It's still drivable but I don't want to damage anything right after a hg job.

Last edited by dibenso4; 07-14-2023 at 10:21 AM.
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Old 07-14-2023, 01:50 PM
svxnavyvet svxnavyvet is offline
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Re: 92 Claret Head Gasket Replacement Temp Gauge Fluctuates

if you put a new thermostat in looks like a sticking one. I just had one of those do just that

Last edited by svxnavyvet; 07-14-2023 at 01:53 PM.
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Old 07-14-2023, 02:47 PM
dibenso4 dibenso4 is offline
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Re: 92 Claret Head Gasket Replacement Temp Gauge Fluctuates

Awesome. Actually getting ready to do that now. Thanks
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Old 07-17-2023, 03:07 PM
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Stevebsy Stevebsy is online now
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Re: 92 Claret Head Gasket Replacement Temp Gauge Fluctuates

The other possibility is that there is air trapped in the system. It might work itself out, but you can always get the front end tipped up as much as possible, then start it up with the cap off the radiator and top it off.
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