No heat

Joe,

Thanks for responding. I removed the air cleaner and upper fan shroud to gain better access to the control valve. Once there, I could see/feel the valve actuator which appeared to be operating normally with the temp selector control.

I then opted to flush the heater core. Didn't see any amount of sludge, but did find some air in the system when removing the hoses. My coolant levels are fine (both in the tank and radiator), so not sure how it got in there. Regardless, the flush seems to have done the trick.

1992 Chevy Astro

what is the problems when the heater blows cold air?

Check for a broken vacuum hose that runs along the intaike manifold these vans are bad for that! Just repair it with some vacuum hose & u should be good 4 a while !

Hi, the van has an a/c problem, maybe it needs to be replace or repaired, and now the heater only blows cold air. Is the heater core out, I check the fuses and the heater turns on and blows air but its cold. Is this a heater cord problem or what?
Please advise.

Bill

Very little heat from my heater. Already know the heater core is bad. Can I keep driving the van?

No heat, what could be the problem - have plenty coolant and when I'm running it heats up but when I come to a stop it blow's cold again

My 97 Chevy Astor van heater plowers stop working I looked at all the fuse under the dash and the hood so dats all good. So how do I get to the motor for the plowers and win I do find them or it how do I till if it went out and that is the problem.