Question about 1996 Audi A4

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1996 audi a4, no heat.

I have a 1996 audi a4 2.8 v6. I cant get any heat. After running for awhile it gets warm, but when you turn the fan higher it gets cooler.

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  • brianr332 Oct 08, 2009

    the car gets to temp very quickly, so the thermostat is fine. right?

  • brianr332 Oct 09, 2009

    it cant be the thermostat the car gets to temp quickly, but only blows cold air


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Sounds like your thermostat is sticking open, when this happens your coolant in your engine isn't given enough time to warm up and just cycles threw to your radiator, which cools the fluid not allowing it to get warm/hot. Thermostat tend to go bad, this is most likely your issue, just have your thermostat and gasket for your thermostat replaced too. Your looking at about 10 dollars in parts maybe 20 dollars in labor! If this helped give me a thumbs up please!

Posted on Oct 07, 2009

  • Joseph Cook Oct 09, 2009

    No it still could be the thermostat..Now if you over heat then its your water pump...

  • Joseph Cook Oct 09, 2009

    See the thermostat could get stuck open or closed..

    Closed could cause it get to temp quickly! I highly recommend doing the thermostat first, if its your water pump there very expensive. And from past experience i dont always trust mechanics they can really get you on i said its only a few bucks i will def try the thermostat first before dumping all your money into a new water pump...


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Actually there are many ways this happen, first off, there is a bleeder screw on the rear of the engine on the coolant pipe that uses a 5mm hex head to drain the air in the system. There is also a bleeding procedure that involves taking the heater core hose clamp loose up by the windshield wipers and battery. You have to raise the coolant tank 145cm to achieve a proper bleed in the system(get the air pockets out) there are adaptors if you dont want to take the tank off to lift it, where you screw them into the cap area and its a hose that raises up about 4 inches... sometimes the waterpumps have plastic impellors that melt and spin off causing no flow, but of course they overheat at that point. Also the climate control has self diagnostics that will show you the flap moving that controls heat and cool. Make sure this flap is moving. you can access this by removing the glove box area with 4 screws. it is the farthest forward flap.(black). the rarest thing is a heater core plugged, but then again it should overheat due to the only flow into the waterpump is through the heater core. I am experiencing the same thing, and have been through all of this including checking the gap in the waterpump inside the housing, and i am still cold air... Maybe the flap in the box is broken from its lever inside... I am stumped for once in 15 years of audi mechanics... try these yoursel;f, hopefully you wont come to my conclusion...

Posted on Dec 18, 2009

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