Heater on 91 subaru legacy takes forever to start blowing hot air but
when it does start working, it works fine..I checked all the fuses and
they are fine..I bought a small ceramic heater for defrosting but now the cigarette lighter is pooched too. any suggestions?
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Re: heater takes forever to start blowing hot air
You probably have a bad thermostat - the one that controls water flow to the radiator. It's supposed to stay closed until the engine reaches proper operating temperature. But when they fail, it's usually in the open position so the water circulate to the radiator all the time. The engine takes longer to warm up, and you shiver in the meantime. It does eventually get hot - it just takes a lot longer. I bet if you replace that thermostat you'll be toasty in no time. As for the cigarette lighter, your portable heater may have blown the fuse.
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Emmit. I assume it blows air, just not hot? If that's the case, the control valve is faulty or probably unhooked. It will be in the heater hoses visable under the hood. Look for an unhooked cable (if its cable type..very visable) or unhooked or damaged vacumn line. Good luck.
I have had a similar situation myself and it was my heater core, on my vehicle it was a very time consuming job as i had to remove the entire dash to get to it. What you could try first if not tooo bad . Flush the system and reverse the hoses on the heater core and reverse flush. You can drive reversed for short time with the heater core hoses reversed as i did for over a week it may un plug if not as bad as mine was....Plenty of how tos on u tube to reverse flush your heater core and system.. I replaced my heater core radiator and water pump and a vent was broken in the dash i found and bad vacuum lines. a couple actuators were bad. had no heat to floor after doing all that it roasts me out of the truck, and the vents work properly including blowing on my feet the way i prefer.... Hopefully this helps you
Not really. that will allow water to flow freely and would take longer to warm up without a thermostat but usually when this happens it is the control valve on the heater line that goes to the firewall causing the problem. When the valve fails to open no water is allowed into the heater core in the cabin and you get no heat as a result. You can manually activate that if needed. it is easier to do when it is cable operated but the vacuum operated model can be manually engaged as well. If that turns out to be the problem replace it and if it is vacuum operated check the vacuum lines for leaks and the control for proper operation.
it may have a blown head gasket if it keep over heating or there could be just an air lock in the cooling water,, you will need to bleed the air out to stop the over heat as the water is not going around the engine its not opening the thermostat so it cant bleed its self take off a water pipe thats the higest pipe you can find it may have a bleed vent in a pipe were you can bleed it from ,,,top up the rad and header tank take off the bleed nippel when water with no air is coming out and the jobs a good un? run the motor for a time or go for a drive to check its not ever heating again and the heater should by now be blowing hot air,, top up the rad and header tank when its coold down
cool air and overheating point to low coolant level. Do you have a bleeder valve near the thermostat? You may have air trapped in the system. If no air trapped, the radiator may be plugged up not allowing proper circulation of coolant.
first check and if the thermostat is working. take it out put it in hot water. the thermostat should open up. also put a temp gauge in the hot water so you know at what temp it opens up. start there. dont forget theres more fuses under the hood for the ac unit