Mechanics

CHEVY NO HEAT

1992 Chevrolet Truck

Heater problem
1992 Chevy Truck V8 Four Wheel Drive Automatic

no heat. Fluids up in resavoir. New thermastat 195. Hot guage isa little higher than usual but not much. Heat comes a bit then it blows cold
AD
Avatar
Vinet
February 28, 2009.




I would say you may have a bad thermostat, they have been known to sell bad ones from time to time. You can check it by placing it in a cup of water that is at the temp of the rating of the thermostat.
If it is a 195 degree thermostat, place it in a glass container of 195 degree water and see if it opens, then cool it and see if it closes.
If the thermostat is good you could either have vapor lock in the cooiling system, a blocked heater core or possibly a lazy water pump.

Tiny
Macdpd@aol.com
Mar 1, 2009.


AD