Question about 1999 Volkswagen Jetta

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Ac compressor Hello, Im having the same problem with my jetta, as soon as no.2 is switched on the ac compressor pops off and it blows normal air. Have you found a solution to this problem? If so please email me at roua@att.net. Thank You

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Pressure switch on low side is defective

Posted on Aug 26, 2008

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2003 kia sedona Replaced the C/fan H2 relay switch ran fine a few mins then a loud rumble near the front fan and smoke appeared. Switched them back no sound / smoke but now the ac is blowing hot air


Im going to guess that the cooling fan went bad. Smoke is a pretty good indicator that something is no good. It make have blow fuses that also power the A/C compressor. The C/Fan 2 fuse is the one that the compressor uses as well.

Aug 14, 2015 | Kia Cars & Trucks

1 Answer

Worst case diagnosis/cost scenario? front underbelly damage,hit 1' tall stake in ground. hissing sound ~5 sec & a/c fluid leaked by radiator gills. a/c blows warm air.


the damage will be a punctured condenser for the ac system
the green oil is the compressor oil that is circulated with the gas
you will not see the gas as it evaporates as soon as it hits the air. Best have an accredited ac specialist shop replace the condenser and any other damaged pipe work

Mar 09, 2015 | 2003 Pontiac Grand Am

2 Answers

Why would my ac on a 2002 jetta just stop blowing cold air?


There are a variety of reasons. If there is a slow leak on your AC lines, once the pressure falls below a certain value, the compressor cut-off switch will no longer allow it to come on. Many times when a car stops blowing cold air, it has to do with either the AC compressor or a leak in the lines, though there are other possibilities.

If you take your car down to a Pep Boys, you can ask for a free AC check and they will check the pressure on your lines. If there is appropriate pressure, then you can tell generally that it is a component of your AC system, most likely the compressor. If there is no pressure, you can have them refill the freon, but bear in mind that it will eventually leak out again unless you have them find the leak and fix it.

Oct 25, 2012 | Cars & Trucks

1 Answer

Driving yesterday smelt something burning and my a/c stoped blowing cold air. now my a/c does not work , opened the hood somethin was smokin a little bit but im not sure what it is


Take a look at the accessory belt that drives the AC compressor. It sounds like the AC clutch seized and you were smoking the belt.

Jul 22, 2011 | 2005 Volkswagen Jetta

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

Ac compressor not switching on 1986 Peugeot 505.GTI How can I test clutch wiring,. Have just aquired this car , heater blowers etc. working but ac clutch not cutting in, is there a switch I have not found....


The best thing to do first is to check the AC clutch itself if it's working, locate the air - con compressor and you will see a wire coming out from the front top of the AC-compressor, it has a connection, remove tht connection and take a piece of wire, connect it to the wire frm the AC-compressor and the other end of the wire to the battery positive terminal,by doing so you will hear a clicking sound of the clutch at the AC-compressor, better still is to start the car's engine, switch 'ON' the AC as normal, let the blower blow thn connect tht wire frm the AC-compressor to the positive side of the battery terminal and check it out if the AC-compressor rotates and also you may get in the car and see if its blowing cold air.
Please also check this -->
HEAT/COLD selector (on the dash) is not selected at HEAT...if it is thn the AC-compresor clutch will not kick in!
Hope this helps!

Dec 27, 2009 | 1986 Peugeot 505

1 Answer

00 jetta ac not cooling, fans and a/c comp./clutch is working but no cool air.. unhooked the low side switch i think it is up top near the fire wall clutch kicks off on the a/c compressor so im guessing...


I would guess your freon has slowly leaked out, and now simply needs to be recharged. You can buy an AC recharge kit with R134 at Walmart or someplace, and do it yourself quite reasonably. If it doesn't cool after that the way everything else seems to be normal, it would probably have to be the temperature control switch.

Jun 08, 2009 | 2000 Volkswagen Jetta TDI

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

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

1 Answer

AIR CONDITIONING


heater controls could be gone

Jun 26, 2008 | 1999 Volkswagen Jetta

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