Question about 2000 Volkswagen Jetta TDI

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2000 Jetta Heater Not working

My heater in my 2000 jetta stopped working after the car overheated a few days ago. Before this problem the coolant hose had a small crack in it, but I replaced it. What could need to be replaced?

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  • Anonymous Dec 22, 2008

    water hose problem serius garage picked it up under warrenty. dont drive if it overheats check coolent levels, dont run ac, take to garage problem thermstate broken or worse water hose.

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2000 jetta warms up when idling, but gets cold as soon as I start driving.

Posted on Jan 14, 2009

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Replace thermostat...start the car let it run for abt 15 min till it heats up & check houses if hose to thermostat is cold or other 1 is warm but not hot thats ur problem thermostat....easy fix up & no hassle...dont overheat the car always blast heater no matter what it cools down the temp...for future reference if car over heats

Posted on Dec 17, 2008

  • smccarthy890
    smccarthy890 Dec 11, 2012

    im buying a 2000 jetta from this guy and he says the air-condition works but not the heat. what does that suggest?

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If your fan is working and is blowing cold air, your thermostat is stuck in the open position so that your car never reaches operating temperature and your coolant is not hot enough to generate warm air in your heater.

Posted on Dec 17, 2008

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Leajking hjead gasket most likely.

Jan 01, 2014 | 1997 Volkswagen Jetta

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My 95 jetta over heats ive replaced water pump trermostat and my heater core dont work should i by pass it will that help and i blows my antifreze out of the reseviour or is it air locked


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My heater in my jetta does not work.....it blows out cold air? what do i need to do to fix this?


check your coolant in the radiator and for coolant leak. feel the heater hoses that go to and from the heater core to see if both got hot. if one of them feel colder than the other then there is a blockage in the heater core.

Feb 25, 2010 | 2000 Volkswagen Jetta TDI

1 Answer

No heat


Does the fan blow air, but it's not hot?

For a heater to operate properly, hot coolant must enter the heater core inside the car. A valve opens and closes to allow this coolant to flow and to stop it when heat is not needed. This valve is usually located close to the firewall at the back of the engine. If you had work done on the hoses, it is possible that the connections to this valve were not done properly.

If you can locate this valve, watch its operation when someone in the car turns the heat on. There is likely a cable which runs from the heating system to the valve. This cable will change the position of a lever on the outside of the valve which will either open the valve for the hot coolant to come inside or shut the coolant off. There should be at least two coolant hoses connected to this valve. This cable can get detached from the lever, and this will prevent the flow of hot coolant from coming into the heater core.

Oct 10, 2009 | 2000 Volkswagen Jetta TDI

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Car overheated one day the fine the next but no


your heat is not working becuase the coolant level is too low meaning your heater core is full of air. the reason your car overheated is because the water pump impeller splines are gone and you need to replace the water pump. it is driven by the timing belt so replace that too. and the tensioner. this is the number one cause of vw overheating, especially on a diesel. i have replaced about 50 water pumps on this engine because of this.

Sep 27, 2009 | 2002 Volkswagen Jetta TDI

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I have a 2003 VW jetta tdi


You've lost engine coolant somewhere, and need to fill the engine back up with the VW special G12 coolant.

Then find the leak, which will be in one or more of the following places -
Water hoses to heater core, including any other coolant carrying hoses in the engine compartment
Radiator hoses
Plastic manifold bolted to side of engine which is known to leak (have replaced on an '01 VW Beetle, and an '02 Jetta, both members of our family in the past few years.).
Overflow reservoir cracked
Radiator leak.

Reply back what you find. If the engine got too hot, you may need to have the thermostat replaced.


Feb 03, 2009 | 2003 Volkswagen Jetta TDI

3 Answers

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I do believe soem 2000 Jetta TDI's came with block heaters. Normally a heater of this type you plug in is to keep the oil warm. This will not keep the block very warm and will not decrease the amount of time it takes to heat up.

If you want the car and the heater to get warmer quicker, you should invest in a "Zerostart coolant heater". There are company's that sell these with all of the hoses, bolts, and clamps needed for a quick installation. If you can change brake pads, you can install this.

I currently have this installed on my TDI and have it plugged into a timer. It comes on about 2 hours before I leave in the morning. It electrically heats the coolant and thermosiphons the coolant through the block. I am now able to immediately begin defrosting the windshield at start up.

Jan 12, 2009 | 2000 Volkswagen Jetta TDI

1 Answer

Coolant problems 2000 vw jetta


plastic impeller on water pump has come adrift

Dec 18, 2008 | 2003 Volkswagen Jetta TDI

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