Coolant temperature fluctuating
#1
Coolant temperature fluctuating
Vehicle: 1996 Tahoe, 2 door, 4x4, NV4500 transmission
1993 Cummins engine
When I'm driving, the coolant temperature fluctuates from about 180 to 215 on the gauge. It'll go to 215 then about 30 seconds later it'll drop slowly back down to 180 then it'll slowly go back up 30 seconds later to 215. It just keeps cycling back and forth. My other vehicle doesn't do this so what's wrong with it? And yes, the radiator is full of coolant.
1993 Cummins engine
When I'm driving, the coolant temperature fluctuates from about 180 to 215 on the gauge. It'll go to 215 then about 30 seconds later it'll drop slowly back down to 180 then it'll slowly go back up 30 seconds later to 215. It just keeps cycling back and forth. My other vehicle doesn't do this so what's wrong with it? And yes, the radiator is full of coolant.
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