Last year the heat worked fine, and recently I've had a lot of coolant system work done. I replaced the water pump, and had two heater hoses replaced, so what are some reasons why my heat won't come on now.
2006-09-20 14:54:55 · 11 answers · asked by Emu 1 in Cars & Transportation ➔ Maintenance & Repairs
if it's not over heating then you are ok on antifreeze. Thermostat would be the first thing I'd look at. You don't have to replace it right away...you can test it by taking it out and putting it in a pan of water and heating it up. If when you take it out it is open in any way then replace it. if it opens before the water gets even warm replace it.
Depending on the vehicle...if it's not the thermostat...try looking at the thermo control(heat setting switch) on the dash. when you move it then it should move either a cable if it's older car or make contact with electrical settings if it's newer. Also check your fuses.
Maybe you should do all this in the reverse order as I gave you the hardest first and the easiest last lol
2006-09-20 15:03:48 · answer #1 · answered by Kenneth S 5 · 1⤊ 0⤋
Sounds like an air lock in the coolant flow. Bleed the outlet hose of the heater. Do so from the engine side so as not to break the heater hose nipple. Don't forget to have the heater in on (open) position when doing the coolant flow.
2006-09-20 15:12:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Air trapped in the heater core. When you flush the system air can get trapped and prevent the flow of coolant thru the heater core. The heater core has to have hot coolant in it for heat to come out of your vents.
2006-09-20 15:05:42 · answer #3 · answered by Anonymous · 1⤊ 0⤋
some things to check why your heat don`t work coolant level low,heater hose kinked during installation , heater core pluged up heat control valve not working ( some are cable controled and some are operated by vacuum) or a door in the heater itself that opens and closes to get heat or A/C this can be cable or vacumm controled also
2006-09-20 15:09:12 · answer #4 · answered by ncwb1 2 · 1⤊ 0⤋
if silicone was used on the waterpump gasket, then the excess sealant after the waterpump was tightened, more then likely made it's way to the heater core and stopped up the inlet side, try back flushing the heater core. check to see if you have an in line heater control valve on your inlet hose to the heater core, they may have left off the vacum line. if it is a gm, the blend air module, may be bad, it would help if you told us make , model and year
2006-09-20 17:05:45 · answer #5 · answered by taknadvantageof 2 · 0⤊ 0⤋
Have someone check and see if they put your heater Hoses on right. If not take it back and tell them to do it right. Sounds to me like they may have by-passed your heater core, and therefor eliminating your heater. If this is OK , then it could be what these other people have said.
2006-09-20 15:37:58 · answer #6 · answered by tm 3 · 0⤊ 0⤋
The thermostat may be in upside down or wrong mixture of coolant. it needs to be 50/50
2006-09-20 15:01:33 · answer #7 · answered by lp904 1 · 1⤊ 0⤋
plugged heater core? air in coolant system?
2006-09-20 14:59:53 · answer #8 · answered by Anonymous · 1⤊ 0⤋
the heater core could be clogged up or the control unit that sends engine vacuum to your cars vents could be broken.
2006-09-24 14:28:41 · answer #9 · answered by Rob D 2 · 0⤊ 0⤋
heater core?
2006-09-20 15:03:54 · answer #10 · answered by Paula from Maple Street 4 · 1⤊ 0⤋