no heat
#1
no heat
I recently bought a 1995 Chevy K2500, 7.4L and drove to work. there was no heat coming out of the heater till i was on the highway doing 70 and as soon as I slowed down in town it got cold again. the temp gage stayed at about 190 the whole time. The water pump looks like it was replaced not long ago. I am wondering if the hoses are routed wrong. They currently go from the engine intake to the heater core then to the radiator. Is this wright or wrong? Any info would be helpfull.
Last edited by digger59; 12-07-2012 at 07:03 PM.
#2
Yes that's correct.
With the truck COLD. Start the truck and let it start to warm up with the rad cap off.
See if the new water pump is circulating. This also will confirm if the thermostat is stuck open.
Welcome to Truck Forums
With the truck COLD. Start the truck and let it start to warm up with the rad cap off.
See if the new water pump is circulating. This also will confirm if the thermostat is stuck open.
Welcome to Truck Forums
#5
Sounds like the hoses are routed correctly. Do you hear the coolant rush into the heater core after you start it in the morning? My guess is plugged heater core.
Do what ItBeMe said - check the temperature of the heater hoses. They should have roughly the same temperature.
Do what ItBeMe said - check the temperature of the heater hoses. They should have roughly the same temperature.
#9
It wont circulate until the thermostat opens at temp.
Did you check the heater hoses at running temp.
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