Question about 1991 Oldsmobile 88

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Heater blowingcoldair/noheat air coming through all vents but get heat

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Posted on Jan 02, 2017

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SOURCE: Heater puts out good heat/new motor and fan/very

blend door( broke or dis conneted

Posted on Dec 10, 2010

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1 Answer

Heater is working but noheat


sounds like a stuck thermostat or you have air in the system that needs to be bled out one each of these go hand and hand so if your thermostat is bad and you change it after you finish you have to bleed out the air from the system

Feb 28, 2014 | 2003 Oldsmobile Alero

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1996 Montero Heater Blower not working


I assume your heater setting is electric control, if so either your defrost and floor heat switch failed or wire problem. For the air not hot, check the heat control valve on the top of the hose it should be in front of the firewall. I don't know your car is using mechanic valve or electric control valve. Anyway check there first. Good luck.

Nov 24, 2013 | 1996 Mitsubishi Montero

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Heating, AC and vent problem


The actuator door that is behind the dash that closes off the heater core from shooting hot air thru the vents might be your problem. When you turn on your ac the actuator shuts the door to prevent the air from flowing thru the heater core into the cabin, this may be your problem if everything else is working properly. Let us know.

Oct 03, 2013 | 1995 Buick Park Avenue

1 Answer

On idle the engine warms but no heat out of heater. Had system purged and no air. This is a 2010 Nissan xterra


The heater control valve could be stuck in the closed position. You say that you have no air. Are you saying there is no air coming out of the vents or no Air Conditioning? If you have no air coming out of the vents and you don't hear the fan, could be a fuse to the fan is shot or maybe your switch is not working. If the fan is not working and your driving and your car is up to operating temp. you should feel some heat coming out of the vents or defrosters. The chances of your heater core being plugged up could happen if someone used some kind of stop leak in the radiator and didn't follow the directions. Well that should have you confused enough.

Dec 21, 2012 | Cars & Trucks

1 Answer

Noheat


Is your temp gauge fluctuating ? Had same problem thought it was thermostat , turned out was just air in system

Nov 15, 2012 | 1999 Chevrolet Venture

1 Answer

No heat though out the vents


ifs theres air coming out of the vents could be a thermostat if theres no air could be blowermotor

Jan 04, 2012 | Cars & Trucks

1 Answer

I have a problem with a air leak in the cab. The dash vents do not allow heat to flow. Heat does come in the bottom seting. This truck has no air only heat and there is a draft when I turn off the blower.


s4s-ect that the heater hose under the dash (may be difficult to get at) has come loose from the dash vent. It may have come loose from the heater cowling - but unlikely since you do get heat the mos"in the bottom setting" It could also be a problem with the butterfly deflector which directs the path of the air flow from the heater core - not the most likely cause.

Nov 18, 2010 | 1992 Chevrolet C1500

2 Answers

Antifreeze steam comeing through vents


Your heater core has a leak, it's like a small radiator that heats up and the blower motor blows air thru it to create heat in the car. It is leaking anti freeze into the heater box.

May 12, 2010 | 1998 Mercury Sable

1 Answer

No heat coming from vents. Only cold air. 1998 caddy seville with climate control. No air coming from front vents at all, only defroster and heater vents.


Fuse has blown in the heater control unit, I had this on my audi last year most likely cause, get youe user manual and loacte the fuse box.

Jan 13, 2010 | 1998 Cadillac Seville

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