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2000 jetta 2.0 ac shuts off at idle when hot outside

Just replaced ac compressor, dryer, expansion valve. also temp sensor for cooling system and thermostate. check engine lite now on .

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 14 Answers

SOURCE: The ac in my 95 Jetta just works while the car is cool, then it stop

In addition to what emission wiz says, observe the speed of the fan when you turn on the a/c. some fans, when the are cold they run faster, then they get hot and slow down a lot. Also check that the small belt that drives the second propeller is ok. And for last, check that the front of the radiator is clear of any garbage, like a plastic bag that might have been cought in front of the condenser with the wind. If all this is working properly, there is nothing else that could be happening machanically to this a/c to stop it from cooling. look at the center of the pully of the compresor, make sure the entire thig is spining when clutch engages.

Posted on Dec 15, 2008

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dcgun007
  • 63 Answers

SOURCE: 1998 vw jetta wont a/c wont cool

Flushed system replaced compressor, expansion valve and drier, evacuated system then let set overnight to check for leaks now replacing oil then I will charge the air.

Posted on Jun 21, 2009

alicantecoli
  • 22156 Answers

SOURCE: 1998 Jetta TDI - AC compressor turns but no cooling

something not right here ,firstly why didnt you just renew the clutch instead of a complete compressor ?? secondly do you have a machine to recharge the system and if so are you using it correctly ,the reason i ask is because in the machine the low and high pressure pipes are interconnected in the body of the machine so yes it would show these pressures.When refilling a car once machine has weighed the gas leaving the bottle shut off the red line and start engine leaving the blue line connected ,run engine at 2000rpm with A/C on full for about 3 mins to draw the gas in from the machine .Then close blue line and and do a recovery to see how much gas was left in the machine.Also did you put compressor oil in when you re fitted the compressor about 100cc is enough ,this is better put in directly into compressor ,then vacumn to about -750mg or a stage one vac pump and omit the oil recovery cycle .When running the air temperature coming out should be about 7.5centigrade is good but some cars will drop to 5C anything below 9C is ok ,and forget to clean out pollen filter

Posted on Jun 22, 2009

emissionwiz
  • 76164 Answers

SOURCE: DOES A 96 JETTA HAVE A ORIFICE TUBE OR A EXPANSION

it has an expansion valve, here is the part number.
FOUR SEASONS Part # 38670 Price $31.79 Source: www.Rockauto.com

Posted on Jun 29, 2009

  • 1071 Answers

SOURCE: 2000 Beetle AC not working. No pressure on low

faulty compressor

Posted on Jul 22, 2009

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My ac wont get cool.......it blows hot air and(caddy seville 95)


Below is a guide to troubleshoot and check system function. This can be done by most folks.

Look at the front of the ac compressor and have someone turn on the ac from inside the car. The front of the pulley(clutch) will spin when turned on.

If it does not spin, the low pressure switch (LPS) is not satisfied. Meaning there is not enough freon in the system to operate the system. Means low freon capicity because of a leak.

The LPS can be jumpered to cause the compressor to run (clutch to engaged) which will draw the freon in the system.

The LPS is usually a two wire sensor on the suction of the compressor. (between evaporator and compressor) Unplug the sensor and install a jumper, this will engage the clutch. Connect a new can of freon
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The capacity of the ac system will be on a label under the hood, do not overfill. Probably about 2 lbs. Local parts stores (Auto Zone and Advance) will have freon with stop leak. This may help the leak. They also make a freon with a UV dye. I always add a single can with dye so that if stop leak does not work I can find the leak in the future.

The system should be filled until suction pressure is about 30 to 38 psi..

Remember the flow for the a/c system is :
1. From the compressor a high pressure (HP) gas goes to the condenser in front of the radiator.
2. From the condenser a HP liquid goes to an expansion device (orifice tube or expansion valve)
3. From expansion device the low pressure gas enters the firewall to the evaporator.
4. From evaporator the low pressure liquid/gas mixture goes through the dryer2_bing.gif back to the compressor suction.

May 29, 2010 | 1995 Cadillac Seville

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Flushing cooling system in 95 jetta, air inside car cold


There Must Be Any Bleeding Screw On Any Hose Of Coolant, After adding Coolant Keep Open that Bleeding Screw For A 15min With Idle Speed It Will Help To Remove Air From Cooling system., Then Check Temp Sensor OF Radiator That May Got Problem , Only Tow Things Could Be The Problem. Thanks

Jan 15, 2010 | 1992 Volkswagen Jetta

1 Answer

1998 vw jetta wont a/c wont cool


Flushed system replaced compressor, expansion valve and drier, evacuated system then let set overnight to check for leaks now replacing oil then I will charge the air.

Jun 20, 2009 | 1997 Volkswagen Jetta

3 Answers

A/c in jetta blows hot air, its been charged, compressor comes on.


you need to have it diagnosed by a professional. These are complicated systems even to a trained tech. You may be over or under charged, have a clogged expansion valve, have a leak or many other issues. This model has a rcv refrigerant control valve inside the compressor which regulates the pressure of the compressor. If you notice the compressor never shuts off like conventional auto a/c's do the only time the clutch works is when you turn it on or off. Can be complicated.

Jun 02, 2009 | 1998 Volkswagen Jetta

1 Answer

Ac compressor does not turn on when car has been sitting & it's hot outside. Works fine in the morning.


either the freon charge is about 1/3 low, or the expansion valve needs to be replaced. Freon is getting into the evaporator, but not in great enough volume to cool the air unless it is coming in cool to start with. check your ac charge, and if it is full, then have it emptied, change out the expansion valve, and recharge it

May 14, 2009 | 2002 Jaguar S-Type

1 Answer

The ac in my 95 Jetta just works while the car is cool, then it stop


In addition to what emission wiz says, observe the speed of the fan when you turn on the a/c. some fans, when the are cold they run faster, then they get hot and slow down a lot. Also check that the small belt that drives the second propeller is ok. And for last, check that the front of the radiator is clear of any garbage, like a plastic bag that might have been cought in front of the condenser with the wind. If all this is working properly, there is nothing else that could be happening machanically to this a/c to stop it from cooling. look at the center of the pully of the compresor, make sure the entire thig is spining when clutch engages.

Aug 18, 2008 | 1995 Volkswagen Jetta

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