2002 viggen no a/c

Probly a leaky line somewhere. The fill line usually rubs on the radiator support and leaks...

Yeah, don't go to JiffyLube for A/C work. Find an A/C shop and save yourself another trip.

yeah I never use jiffy lube for anything! they just had a 30$ price diff on ac service is all. Ill look around for leaks but he said he didnt hear any and there is refrigerant in there any other things to check?

Do you have an Acrid chemical odor in the car after it sits over night? That's a good sign of Evaporator failure if you do. Seen alot of OLD gen 93's in need of them lately. You can literally Smell the leak if its inside the car.

no unusual smells that ive noticed... is it really distinct or is the smell something you wouldn't notice if you weren't looking for it?

If you connect 12v direct to the compressor you can test if it's working or not and start working back to find the fault. It might just be the thermo switch is shot or you fan resistor is toast...

Be real careful feeding 12 vdc directly to the clutch. There's a couple of switches in series feeding that clutch for a reason. One is the high pressure cutout, the other is a low pressure cutout. Don't want to run that system for very long without the proper cutouts. It's also a fused circuit.

I'd apply 12v to the clutch with the car off. You should be able to hear/see it actuate. Also with the engine off and 12volts applied you wont be able to spin the compressor by hand because it will be engaged to the serpentine belt at that point.

There is a low pressure cut off switch too, If you are just trying to fill the system with a cheap hose and can from the parts store, the compressor may not kick on if the system is completely empty. You may then have to jump the compressor with 12v with the Engine running to get the system to start taking in more refrigerant.

If your system is empty, than likely you have a significant leak somewhere, in which case you would probably want a dye charge so that you can use a Black light to find the leak location.

Besides fuses, there is also the A/C relay that may have gone faulty.

all great info thanks everyone!! does anyone have any sort of diagrams to reference to? Im not too familiar with the ac system.

Are you actively getting blown hot air? Or is nothing coming out of the vents? (Just clarifying here.)

I turn the acc down to 60 and get nothing but hot air.

Any squealing belt noise when the AC is off?

I would diligently check each fuse with a flashlight before doing anything else. I had an issue in another car that tuned out to be a broken fuse but I had missed it because the fuse hadn't turned black or looked burnt even but when I closely checked it I saw the disconnect.

A broken compressor would probably make some noise that you'd easily identify right away.

aireeca said:

Any squealing belt noise when the AC is off?

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no sounds at all. When I had the ac on in my old 9-3 I could feel the motor rev up a bit and noticable vibration in traffic. I get none of that. I would guess that if the compressor is bad it would make noticable dieing sounds lol.

brand new belt and idler pulleys also.

Ero said:

I would diligently check each fuse with a flashlight before doing anything else. I had an issue in another car that tuned out to be a broken fuse but I had missed it because the fuse hadn't turned black or looked burnt even but when I closely checked it I saw the disconnect.

A broken compressor would probably make some noise that you'd easily identify right away.

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my thoughts exactly. Ill go out and double check the fuses right now.

so I just checked the fuses and there all fine. however, I did see something a bit unusual. fuse number 3 in the drivers door fuse bank says it should be a 30amp and its a 20 amp. I looked a little closer and I could see that where the fuse plugs into theres only a wire running to one side. So I unbolted the fuse block and looked behind to see if there was a wire running to both sides of the fuse and there wasnt. is this normal????? whats the point of the fuse then? I didnt even see a loose wire anywhere. everything looked in place. now im more confused! someone please chime in!

also another thing to add. to no surprise i pulled the number 3 fuse when the car was running and the acc still worked. ive looked for about the last hour to see if there was a wire somewhere that was supposed to go to that fuse and found nothing.

What does the little Fuse Identifier card say it is supposed to be?

Wiring harnesses are used in a variety of models with different trim and option levels. That fuse is likely for something you do not have.
Someone probably just stuck a spare 20amp fuese in there.

on the car it said main a/c and something else I dont remember the other one off hand. Ive been doing alot of research and was thinking the thermo switch maybe junk? I think you talked about jumping it to see if the comp turns over. I looked at a picture of how it is set up there is a positive and negative wire coming out of the switch how do I jump the connection in detail?