Question about 1999 Volkswagen Passat

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Vw passat 97 the heater in my car wont work. i can feel the heat after about 3 minutes driving, but it does not blow the air out perhaps it is the fan isnt working? any idea of what the problem could be?

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If you can hear the fan but feel no air blowing take a look at the pollen filter under the bonnet near the windscreen. It's supposed to be changed once a year, but if left for several years it becomes blocked and stops the airflow.

Posted on Feb 13, 2016

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Check the coolant level, - air in cooling system.

Posted on Mar 14, 2011

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1 Answer

My 2001 vw passat blow air but not hot.replace the temp.sensor but nothin happen.


check it the heater control is allowing hot water through the heater core.(turning the tap on )

Dec 28, 2013 | 2001 Volkswagen Passat

1 Answer

2004 vw passat w8 won't blow warm air until car is moving


Could try to change temperature sensor (due to MIL light), but it doesn't cause no heat in vehicle. Most likely caused by air-lock in heater hoses at heater core. Try bleeding hoses to eliminate air.

Dec 09, 2013 | Volkswagen Passat Cars & Trucks

1 Answer

1999 VW Passat AC/heat doesn't work? The belt broke this summer? I was told should still blow heat even if no belt?


If you are talking about the belt for the ac compressor, yes the heater should still work.
If the blower is not working, you will need to have the blower motor checked for voltage and ground.

Dec 18, 2012 | 1999 Volkswagen Passat

1 Answer

1999 VW Passat heat not working


Could be your thermostat... If defective, it will not allow the engine to heat up. Take the coolant cap off before you start the car when it is cooled off. start the engine and let it idle, look at the coolant. The coolant should not be flowing or moving right when you start the engine, if it is, the thermostat is bad. If you dont have enough coolant and you see it is low, this may also cause the heater to stop working. Someone may have by-passed your heater coil, check that. Sometimes when a heater coil leaks, people will by pass it so that they can continue to use the car or they cant afford to change it. It should be located on the passenger side under the dash or on the firewall inside the engine compartment on the passenger side. Another thing could be your climate control which is a fancy name for the heater controls on your dash, sometimes the switches become defective and will not operate the heater.

Oct 25, 2012 | 1999 Volkswagen Passat

1 Answer

Fan is blowing cold air only


good day, you may have some heating core issues, anti freeze leakage, have it checked. hope this helps, have a nice day

Feb 09, 2010 | 2007 Volkswagen Passat Sedan

5 Answers

2006 Passat Air Conditioning Problem


There is an electrical relay that is malfuctioning. I had the same problem on my 2000 VW Passat. I just got it fixed, part cost 48 dollars and labor will be about an hour.

Jun 30, 2009 | 2006 Volkswagen Passat

1 Answer

The heater on my 2002 VW Passat is blowing cold.


I have the same problem, but mine was because someone put stop leak in it! otherwise, check my profile, someone posted a answer that may help you.

Mar 28, 2009 | 2002 Volkswagen Passat

2 Answers

Heater problems in my vw passat


Try removing he heater hoses going into the firewall(when cooled)and blow the heater core out with compressed air.Or you could have the cooling system flushed.

Jan 14, 2009 | 1999 Volkswagen Passat

7 Answers

Low heat from my 2001 Passat heater


There are known problems with this vehicle's heater core not getting enough coolant flowing through it to blow hot air.
1) Even if the coolant looks good, there are problems with the heater core plugging up. One solution is to use a heavy duty cleaner (CLR pipe cleaner) to back flush the heater core. To know if the heater core is plugged up, disconnect the 2 heater hoses at the heater core and somehow connect a hose to one end of the core. Try to flow water through, it doesn't have to be high pressure, and there should be a steady stream. If not, try to get the cleaner directly into the heater core and let it soak. Then back flush it and a lot of scale should be seen coming out.

2) The other problem is that since the heater core is the highest point in the cooling system air tends to get trapped in it. This should only happen if the coolant goes low or someone has opened the system to service it. There are a number of ways to bleed the system (vacuum bleed, pressure bleed). One of the hoses should have a small hole in it for bleeding air, pull that hose back just enough so the hole allows coolant to flow out of it. Then accelerate the engine and get a good flow coming out, when no more air bubbles are present, there should be good heat.

3)I've heard of bad water pumps with low flow causing issues as well as an aux. water pump not fuctioning correctly leading to poor heat output from the heater core. Someone should confirm this as I cannot get much information on the aux water pump(electronic pump by the alternator that is supposed to run after the car is shut off).

Hope this helps.

Nov 25, 2008 | 2001 Volkswagen Passat

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