Question about 2000 Audi A4

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No heat in 00 a4 1.8t Q

Got no heat, checked all the lines, antifreeze, etc.. think its heater core.
got a little defroster for windshield, works ok but i freeze. want to get a propane heater or something else to keep warm. any ideas on what to do?

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  • Anonymous Mar 14, 2014

    Just wondering what could be going on. I am thinking leak in the radiator and heater core went out? suggestions are welcomed.

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To flush the heater core disconnect the two heater hoses under the hood. Use a garden hose to flush out the core by spraying water into one hose connection and water and debri should exit the other opening.

Posted on Nov 04, 2008

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2 Answers

I have a 2000 4.3L silverado. Heater & AC works but when defrosters are turned, on my windows fog. Why???


Check coolant level, if it's losing coolant, you may have a heater core leak. Does it smell like antifreeze in vehicle when defroster on? If by chance your ducting drain is plugged, it may just be water or condensation build up inside where core is. Antifreeze leak will also put a sticky film on inside of windshield, so if you wipe it with finger and it feels sticky, it may be a core leak. Be sure to double check heater hose connections in to firewall/heater core, just to be sure your leak isn't a bad hose connection before going to far if core appears to be leaking. A pressure test on system may give you a better idea what's going on. If all checks out and no leak apparent, be sure your AC compressor is engaging when in defrost mode, as that is what helps remove the moisture in the air during defrost. If compressor is not engaging, it will take much longer to remove moisture in the cabin.

Feb 18, 2012 | 2000 Chevrolet Silverado

3 Answers

Heater blows cold


To troubleshoot this types of problem,click the link below :----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the issue.------
Engine Overheats and heater blowing cold? http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------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
-----------
This will help.Thanks.

Feb 15, 2012 | 2003 Buick LeSabre

1 Answer

2008 ford ranger. antifreeze is coming in and out of heater core, fans works, diverter works from floor to defrost etc however no heat


check the hoses going into heater core. are they hot with heater on! if not make sure you have a proper amount of coolant in it. if coolant is ok and all is fine. change thermostat. good-day ! if hoses are not hot its a possibility, that the thermostat is sticking closed and not letting hot coolant through system.

Oct 01, 2011 | Cars & Trucks

2 Answers

Heater fan works fine; no heat. What are possible causes?


There are little doors under the dash that direct the air to either the vents (blows at your face), the defrost (blows at the windshield), or underneath (blow to your feet area) - these doors are controlled by what's called actuator/s and they are usually controlled by vacuum or cables - when the air won't change directions it can be either the vacuum switch, the vacuum line disconnected, cable disconnected or the actuator itself can be stuck or bad...

You also have a heater valve that allows the heated coolant to enter the passenger compartment into a heater core (small radiator to allow heat to transfer into the air when the blower blows air across the core) - this can also be vacuum controlled or cable controlled or electronically controlled - if it malfunctions then you may not get any heat into the passenger compartment - you will have to determine if the valve is not getting the signal to open or is bad and will not open - good luck :O)

Feb 17, 2011 | Ford E-150 Cars & Trucks

1 Answer

Anti freeze is deposited on my windshield when heat is turned on


You may have a leak in the heater core or the hoses to the heater core located under the dash. check to see if there is any moisture under your dash in the carpeting.fix the leak, and you will fix the cause of antifreeze on the windshield.

Feb 03, 2009 | 1991 Oldsmobile Cutlass Ciera

1 Answer

Heater works but defrost fills inside with fog.


your heater core has probably sprung a leak.does the fog smell kinda sweet?....check the floor in the front where the floor mats are for moisture or even puddles of antifreeze.(the replacement of a heater core can be very expensive as the entire dash usually needs to be removed to access the heater core)also look under the engine near the firewall for antifreeze drips.

Dec 13, 2008 | 1998 Dodge Caravan

2 Answers

Cant get heat to the inside


Have you checked to see if small vacuum line on firewall under the hood is a-ok ( no breaks or cuts) it's usually on passenger side and goes through the firewall to inside.
Also I think when the heater core goes out you have no defrost either so when it is cold and wet outside your windshield will fog up.Also did you check your fuses.

Nov 22, 2008 | 2001 Chevrolet Tracker

1 Answer

Coolant leak 1991 mazda navajo


if you smell antifreeze ,and belive me youll know its antifreeze ,inside the car or the windshield will fog up when defrost is on ,you have bad heater core

Aug 26, 2008 | 1991 Mazda Navajo

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