I just added additional 50/50 coolant to the reservoir. I was not overheating prior to adding the coolant, nor were there any heating problems. After adding the additional coolant I have no heat when my truck is idling. Once I get on the road it blows very warm. Idling it blows outside air temperature.
2006-11-27 14:27:53 · 8 answers · asked by iheartfaye 1 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
first check to make sure the radiator itself is full. COLD. then check for a clogged core.
2006-11-27 14:31:02 · answer #1 · answered by quickcuda69 3 · 1⤊ 0⤋
I can't imagine what adding coolant could have to do with it. It is only a thought but the valve that operates the coolant flow to the heater may not stay open when idling. This would indicate a vacuum leak in the hose that controls the valve or a defective valve. The vehicle is old enough you might look closely at the valve. I don't think they cost much. The vacuum leak would not be large enough to affect the engine.
2006-11-27 14:40:21 · answer #2 · answered by tronary 7 · 0⤊ 0⤋
you need to drain the whole thing out,and flush the entire cooling system out on it,this will help it circulate a lot better through the engine,and if this don't help try and see if the water pump is working right on it,sometimes the fins on the pump its self will wear out,and not circulate the coolant real good until your moving,,but yet the pump wont leak any coolant,i have found this to be a real problem especially with the ones that had the 4.3 engine in them,good luck,i hope this help,s.
2006-11-27 14:35:52 · answer #3 · answered by dodge man 7 · 0⤊ 0⤋
I have no idea how to fix your problem, but I can sorta sympathize with you. Years ago I had a car that had a similar problem. The air conditioner would only blow cold air when you let off the accelerator. I'd sweat terribly going uphill and cool off on the way down, or I'd start speeding to get up a little steam then let off and coast to cool back off! Guess some cars have a mind of their own. Sorry I couldn't help you, though!
2006-11-27 14:33:57 · answer #4 · answered by ladyw900ldriver 5 · 0⤊ 1⤋
Sounds like a vacuum switch to the heater doors under the dash. Any hissing sounds? What's temp gauge show?
2006-11-27 14:36:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
it sounds like the thermostat is stuck open dose the temp Gage come to normal operating range when idling? if so plugged heater core could be the problem try back-flushing it
2006-11-27 15:33:31 · answer #6 · answered by bigblockchallanger 2 · 0⤊ 0⤋
the first thing i would check is the water pump. very common problem. like dodgeman said the fins wear out due to corrosion from the antifreeze and any impurities in the water.
2006-11-30 07:37:57 · answer #7 · answered by 409power 2 · 0⤊ 0⤋
Have you checked the blower motor?
2006-11-27 14:37:23 · answer #8 · answered by ducky71j 3 · 0⤊ 0⤋