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So I have a 00 Passat. The heater doesn't blow

So I have a 00 Passat. The heater doesn't blow heat or site conditioner only once the car is in motion you start to feel heat

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  • Cars & Trucks Master
  • 3,679 Answers

Sounds like the water pump isn't working as well as it should , i 'd advise a new pump , but get a mechanic to actually inspect the vehicle as there may be other issues, ie thermostat, coolant air lock etc

Posted on Nov 13, 2014

Testimonial: "I was told it was the blower yo under dash but when replaced it nothing happened. So don't think that was the cause"

  • steve Nov 14, 2014

    if replacing the blower never changed the problem then as i have posted it sounds like a waterpump problem but get it inspected as could be the thermosteat etc , but it does sound like a wearing waterpump , or slipping drive belt, keep me posted if you wish

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Posted on Jan 02, 2017

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SOURCE: 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.

Posted on Jan 14, 2009

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2004 chevy Impala my heater and my air conditioner wont blow air


start with using a meter to test for power start from fan back to switches need to check harness and connectors

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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.
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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.

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My Buick skylark doesn't leak but it over heats..


To troubleshoot this types of problem,click the link below :---

All types of car overheating problems and troubleshooting? http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html

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heater blows through defrost?

-http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.

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Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

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This will help.Thanks.

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My 2002 volkswagen passat is blowing cold air when I put the heater on. I took it to a dealer and they said that it could be because my car has a sensor that detects the temperature in the car and when its...


Your brother's mechanic may be correct but you may want to double check if you have a bad flap which opens / closes the access of coolant thru your heater hoses to your heater core. This component is called an actuator which may be defective.

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Air/heat not blowing from vents, can feel the heat but it's not blowing, I turn the knobs to high blow and it won't do anything, its cold outside,


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Check to see that the blend door linkage is hooked up. Doubtful it is heater core, as you had heat to one side and not the other. Check coolant control valve linkage, verify it is moving the coolant valve from off to on when you switch temperature from cold to hot. Verify you have coolant flow to the heater core by feeling the heater hoses where they enter the firewall. If all checks out well, then look at hvac controls individually.

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Heating doesn't work


locate the hoses going into the heater core, let the engine warm up. Once the engine is hot feel both hoses, if one is not hot, the heater core is plugged up. If that is the situation, remove both hoses and flush it well with a garden hose

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1 Answer

My heat not workini but blow cold air where is


Has the car been changed coolant since it was bought? If it is time to change, let do a flush through a heater core. There are 2 coolant hoses going thru a fire wall. One for coolant in and one for coolant out. Heater only works if coolant is flowing through the heater core. Therefore, there are one or both following cases contributes to the problem: 1-If the valve control coolant flow gets stuck, then it always closes  so there is no heat. 2-If the valve is working, but the heater core gets clogged up, then there is no heat.

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