Question about 2001 Audi A4

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Heater doesn't work

I have an audi a4 2001 and all the heater does is blow cool air, there was a little rattle before the heat went out. Then when I stop the car it has a smell coming from the front of the car

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  • emtotheja Dec 07, 2008

    Is this something that a non professional, yet experienced person can do at home? Where would be the best place to purchase the heater core?

  • 468mathew Jan 06, 2009

    2001audi a4 1.8t fans work but no heat comes out? Good place to buy one ? How hard is it to get to the heater core?

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  • 324 Answers

Your heater core went bad, you need to replace the heater core....

Posted on Nov 26, 2008

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No heat in heater when idiling when reviv motor up has a little heat and heats up when ideling in traffic


Sounds like you may have combustion gasses creating an air lock in the cooling system. Or plugged heater core / radiator. Definitely a circulation problem of some kind either flow of hot antifreeze is restricted or the heater should blow very hot air especially when the car heats up so long as all the ducting and heater controls are functioning properly. If the vehicle has been overheated you more than likely have combustion gasses in the cooling system. Water pump will not work properly for combustion gasses that mix with coolant. Check to see if the coolant is beginning to get a little oily and dirty, this will indicate combustion gasses entering cooling system.

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take the top off the filler cap run engine to boil. keep it full off water to the top. you will see air bubbles coming out as the engine gets hotter. squeeze the pipes on the rads to help the air come out. when fan kicks in turn engine off and leave to cool down.while you are doing this make sure the fan for heater is off but is on full heat. can have fan on number one on speed that is fine.

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2 Answers

2001 BMW Z3 2.5 my heater went out. Blows cool air. I checked the coolant level and itwas a little low. filled it...cool air still....what should I do next...sharon


i would have the cooling system flushed and have the heater core flushed seperate half the time the heater core gets clogged with crud and you get very little coolant flow through causing no or poor heat.

Dec 07, 2010 | 2001 BMW Z3

1 Answer

Heater


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Heater not working for my C180 mercedes, blowing air but no heat coming out


heater not warking for my C180 mersedes, blowing air but no heat coming out, hot water which coming from water pomp doesn,t go throw,

Dec 18, 2009 | 1994 Mercedes-Benz C-Class

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

2 Answers

New heatercore but no heat flushed system out but still no heat the dash gets hot but very little heat comes out when on for awhile the fan works just blows cold air


Did you run engine from cold, with heater on when you refilled the system? Try again, rad cap off, with heater on, and let engine get up to operating temperature, make sure you have good flow through rad ,leave cap off, until rad fan comes on to cool returning coolant to rad at least twice. Give engine a little extra rev, for 5 seconds or so, every once in a while to make sure flow getting through heater core, and add coolant as necessary. See if that helps, as it may just be an airlock in system. If your cooling system has any bleed screws incorporated, crack them once in a while as well.

Nov 05, 2009 | 2000 Oldsmobile Bravada

2 Answers

1997 audi A4 heater blowing cold air


You probably have a leak in your oil cooler. This is causing the oil to bleed into your cooling system causing the "thick brown liquid". This in turn will also cause your engine to over-heat since the cooling system is contaminated.

Feb 25, 2009 | 1997 Audi A4

3 Answers

No Heat in 99 Taurus


Just finished fixing my daughters 1999 taurus heat. It would blow warm only when running down the road. At idle it blew cold. I started with replacing thermostat, and water pump because they are the easier fix. Still did not help. Then I replaced the heater core. A daunting job but not that hard to move the dash slighly out of the way to replace. There is a good write up at tarusclub.com. After that, heat was better but at idle, it would still blow cool sometimes. Researched and found answer. Park car on the steepest hill you can find with front of car up. Start car and take off reservoir cap. Let car warm up and keep rpms about 1500. After a while the fluid will come running out of the car and all over the place but it will bring air bubbles with it. Reduce rpm, add more fluid and repeat about 3 times. It will make a mess but after that, the heater works perfectly. We get heat long before the temp gage indicates any and it never blows cold unless you lower the temp.

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1 Answer

1997 audi A4 heater blowing cold air


You will have to change the heater core. 9 out of 10 times, when the heater is not heating the air, it is a bad heater core.

Nov 12, 2008 | 1998 Audi A4

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