Question about 1986 Volkswagen Golf

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1986 VW Golf - blows cold air out vents

I own a 1986 VW Golf that blows cold air out the vents no matter what position the air lever is in. Also the temp. control lever only blows out cold air not matter where the lever is.

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Add coolant....if that doesnt work...check the thermostat...then if its not that its the water pump

Posted on Jan 14, 2009

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blueextc3221
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SOURCE: 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.

Posted on Jan 14, 2009

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98 carolla heater blows cold ,I flushed system replace t stat check flow switch its working. when defrost, heat lever in heat position air blows out ac vent.


The mode selector is bad. IF you look at the plenum (where the fan motor is ) you should see two levers one is hot cold the other is mode. Check them by moving the controls and see if they move.
If the mode lever moves then the door on the inside is broken or something could have fallen in the vents and is blocking it.

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Heater in my car blows slightly worm air


no year stated. nor engine.
the engine must be 180F or more and hold
we use what is called a tool, called a thermometer,
we measure the engine heat first. at the thermostat housing
180F is typical. if not fix that first.
check fuses if the fan "blower" is dead , is it?
blows cold in all lever positions? hot + recirc, + defrost ,high or low vents?
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I have a 2005 Ford Taurus SEL that has no heat. The blower works and the different vent locations blow out air when selected. What can O dp?


Usually there's a flapper door that diverts air through the heater core or not. Your flapper is stuck in the cold position due to a cable/lever not being connected any longer. When it happened to me in a VW, it was a tiny plastic piece that broke, rendering the cable inoperative.

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Heater not getting hot vw golf 1989 1.3


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Vw golf 2001. coolant system not working


Your most probable cause for this is because your water valve needs replacement or repairing. Not all cars have a water valve that brings the heated coolant into the heater core unit.

Essentially, the heated coolant is brought from the engine block directly, into a mini radiator that has a fan to blow heated air into your vehicles cabin.

If that valve were clogged, or the switch itself to open up the water valve that blocks the coolant from going into the heater core unit, then you wont be able to get heat from the vents.

ALSO, another reason why your car might also be overheating as well, is you need to check your coolant levels as well to make sure it is fully filled up, if it is, then your thermostat might also need replacement.

good luck with your problem.

Apr 06, 2010 | 2001 Volkswagen Golf

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2002 New VW Beetle is only blowing hot air out of vents even when set on cool. I was driving and I made a turn at an intersection and all of a sudden the cool vent air turned to hot air like I had the heat...


On the bottom of the air unit is the lever that changes temps. It likes to fall out of place.I propped mine back with a piece of half-inch copper pipe a couple of years ago.Remove glove box then panel on front side of console to access.

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2001 Suzuki XL-7. Heater blows hot one side, cold the other.


No ductwork [to the lower vents] under the dash. They are part of the heater core / blower housing is integrated (all one piece).

After reviewing shop manual, we suspect that one of the three damper flaps is not positioning correctly; or debris has blocked one side (which makes more sense given the symptoms).

We're waiting for the temperatures to get back in the plus numbers to check out the physical arrangement.

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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

1 Answer

In cold temps-Starts good, then stalls out


Could be a problem with the thermo time switch, cold start injector or idle air stabilizer... Probably a job for a pro as this requires detailed testing to solve... Hope this helps...;-)

Dec 12, 2008 | 1986 Volkswagen Golf

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