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Hammerman


hammerman

Member
Joined
Oct 14, 2007
Messages
7
City
Culdesac, Idaho
Vehicle Year
1991
Transmission
Manual
Temp fluctuation

Temp fluctuates ,normal then like the thermostat opens goes to cold, 5 min. Of driving goes up rapidly to normal maintains the temp. 30 sec. Then drop to cold. Cycle repeats. Replaced thermostat with 192 degree still did it.
Had bad valves so changed heads, water pump still does the same thing.
 
Last edited:
Check gauge sensor for proper operation. Not that loose connection or bad ground. Did teflon on threads of gauge sensor? English not hard. Welcome to forum.
 

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