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Vectra c the heater will not blow hot air

Coolant is hot but heater does not blow hot air

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

Brian032472
  • 150 Answers

SOURCE: Frequently loss the coolant and

You are losing coolant if you have a coolant pressure tester follow the directions and use it. If you don't when the car is cool use a 50/50 solutuion of water and coolant fill system and check all the listed items carefully with a flash light and look for leaks. It is either a bad hose, cap, water pump or radiator. Your coolant circulates through the dash and the blower blows throught the heater core to produce heat. No coolant no heat. I would also check the passanger side floor for anti freeze or moisture could be a leaking heater core also.

Posted on Nov 02, 2008

  • 217 Answers

SOURCE: '98 S-10 heater blowing cold air - not hot air

will the air flow switch from floor to the mid to defrost? if so then we have a problem with the tempature door actuator. easy to replace just in tight place. Keep me posted for more help or if this was any help thanks

Posted on Jan 31, 2009

  • 10865 Answers

SOURCE: A/C/Heater only work and High and Heater does not blow hot air.

you can change the thermostat yourself for under 20 dollars. if you dont know how go to an autozone and they will assist you.

Posted on Feb 18, 2009

  • 401 Answers

SOURCE: 2006 Pontiac Torrent heater blowing cold air

hi
check the heater hoses and if both are hot then the mode door is broken
i have replaced 2 in the torrents(not a nice job)

Posted on Jun 21, 2009

  • 55 Answers

SOURCE: heater blow cold air in my 1994 Honda Accord (4

Yes clogged heater core may be the answer in your case .


Posted on Dec 11, 2009

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1 Answer

2000 caddy Seville ...after starting and engine warm turn on the heater and it blows cold air. Fan works / waiting for hot air and then all the sudden it kicks in. Engine at normal temp


Low coolant, if there is an air pocket in the engine it will make it to the heater core. Once there , the air coming out is cold/cool. Once the coolant fills the heater core, it gets hot. If the coolant is fine hot or cold, then have the HVAC system scanned.

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I have a Vauxhall vectra six 2005, I am having problems with my heater it is taking ages to expell warm air , also this is only happening once temp gauge begins to operate , I have changed heater elem


Make sure you have a thermostat and you're not low on coolant. If that checks out you can usually use a garden hose to blow the crud out of the heater core.

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my vectra c heater blows out hot for a while then goes cold but when u speed up it gets warm but when goes idle get cold any help

Mar 23, 2012 | Vauxhall Vectra Cars & Trucks

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When the car is idling, the heater blows out cool air but when the car is moving, the heater works fine


When the coolant in the heater core is hot from the engine and your fan is on hot air will blow through the hot fan coil, i figured it out, when i stepped on the gas i could here the coolant squeezing by the control or limiter valve, because the higher rpms make the belt spin faster which makes the water pump pump harder causing more pressure, so when u idle that hot coolant will cool down from the fan blowing on it, u need to find the control valve and open it up to full blast, then hot coolant will always be flowing through your heater coil. ;)

Dec 17, 2010 | 2008 Pontiac G6

1 Answer

Hot air blows but cools down in 15-20 seconds.


You likely have a restriction in the heater coolant hose circuit - perhaps a coolant control valve not fully opening, or a kinked hose.
Insufficient coolant volume is flowing to keep the heater core hot.
Try back flushing the heater core system with a garden hose to check flow.

Nov 13, 2009 | 2003 Audi A4 Cabriolet

1 Answer

My 91 cadillac devile has no heat , just cool air blows even when


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

Jan 14, 2009 | 1991 Cadillac DeVille

1 Answer

1986 VW Golf heater blows cold air


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.
if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

Jan 14, 2009 | 1986 Volkswagen Golf

3 Answers

I have changed the theromast twice and flushed the coolant system.The heater core is not leaking.. the blower is still blowing cool air.


The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

if the car is not overheating, the thermostat is working fine.... replace or flush the heater core multiple times to try and eliminate sediment build-up.

Jan 13, 2009 | 2003 Ford Expedition

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