Question about 1997 Volkswagen Jetta

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I can't find the AC low pressure valve on my 1997 Jetta Volkswagen

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Should be by the firewall on the passenger side of engine compartment. On the a/c lines.

Posted on Jun 24, 2009

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1 Answer

Where is the lower pressure valve


low presure AC port could be under the front wing like a ford focus on the drier canister but some renaults do not have one they only have one filler point with a large valve so you think it only has a high pressure port but in reality its the low pressure with the big valve so you swop the pipes around the AC machine ,look to see if this pipe is going to the low pressure side of the pump its a thicker pipe is the clue .

Sep 13, 2012 | 2004 Volkswagen Jetta

1 Answer

2000 vw Jetta ac not cooling, ac compressor is on, freon level good, with ac manifold gauges high and low side fluctuates from 50-60 psi on low side.


try to throw cool water on the condencer front of the engine radiator and see whether any cool air comes in the car. If so see whether the pressure valve is working okey or not because might the pressure is not sufficient.

Sep 05, 2012 | 2000 Volkswagen Jetta TDI

1 Answer

1997 jetta ac works for one minute then warm air blows


check the refrigerant level. The compressor is running until the low pressure or high pressure switch switch cuts it off.

Running the unit without enough refrigerant will damage the compressor because the lubricating oil is dissolved in the refrigerant. This is the reason for the low pressure switch cut off--to protect the compressor from damage.

If pressure gets too high, the compressor seals will blow. Thus the reason for the high pressure switch. Too much refrigerant or too much air in the system (due to a leak) will cause high pressures.

If refrigerant level appears to be correct, then suspect trapped air from a leak causing a high pressure cut-off. If refrigerant is low, suspect a leak causing a low pressure cut-off.

Mar 02, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

How do i burp the air out of my gas 1997


oil in the air filter is caused by one of 3 things, excessive oil level in the crankcase or excessive engine cylinder leakage causing to much back pressure and blowing the oil up the and into the crankcase vent hose, this same condition can also be caused by a plugged Positive Crankcase vent system valve. (PCV for short)

Jan 19, 2010 | 1997 Volkswagen Jetta

1 Answer

Which one is the low pressure valve? the one on the thinner pipe?


if you have the 134 a conversion kit the fill adapter will only fit the low pressure side

Jun 27, 2009 | 1997 Volkswagen Jetta

1 Answer

Jetta ac leaking at high pressure valve


have the valvestem checked for wear/looseness

Feb 27, 2009 | 1999 Volkswagen Jetta

2 Answers

A/c issue


Could be a couple things - one, if the fan switch for the AC condenser is not working, it'll keep the AC from kicking on, but that's usually seen by the compressor not coming on. When you activate the AC, do your RPM drop down at all? It should. If it does, the compressor is kicking on and you probably have a problem with the expansion valve, which is what flash chills the air. The car is pumping freon around but it's not cooling enough to cool the car. That's likely an expansion valve problem.

If you turn it on and the revs don't dip down momentarily, the compressor isn't coming on, and it could be the fan switch underhood or the AC relay.

Aug 29, 2008 | 1998 Volkswagen Jetta

1 Answer

Ac compressor


pressure switch on low side is defective

Jul 15, 2008 | 1999 Volkswagen Jetta

1 Answer

Please help me with my air conditioning for my 1995 jetta


HI, giving the compressor 12v directly is not the way to go as you are bypassing the entire fail safe cercuit. it seem to me that your ac gas is low(can be checked via ac pressure gauges) wich means you have a system leak sumwhere. as soon as your hi/low pressure switch(depending on system) detect inferior pressure to the spesified pressure ,the ac compressor voltage is cut in order to protect the pump from seizure.

Or perhaps your evaporator(small radiator like unit behind dash) can get freezed up caused by either too mutch system gas(check pressure) or poor opperation of the expantion valve. the evaporator then has a sensor(themometer) wich measures evap. temp and if the value drops below spec (usially round about7degrees) the ac compressor will be cut once again(fail safe)

Maybe your ac compressor overheats due to inferior system oil/oil capasity, also note that only some systems incorperate the function of measuring ac pump temp. then again temp to high= fail safe=no12v to ac pump.

Good luck.
gk

Jul 14, 2008 | 1995 Volkswagen Jetta

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