Having problems with your 1994 Chevrolet K1500 ?
Temp. guage keeps fluctuating from very hot to below normal. heat not that good. thermostat was changed. guage cluster changed. temp. sensor changed. could it be poss. head gasket prob? i have a 5.7 with 137 thousand miles on it. when the temp. needle goes to hot the check guages light comes on and it stays there for about 10 seconds then goes back to about 180 real fast.
Usually one of the head gaskets are bad normally the drivers side from what I have seen, typical problem, i have been down that road also
Repair Help & Product Troubleshooting for 1994 Chevrolet K1500
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