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AC COMPRESSOR PROBLEM? PLEASE HELP

hib on Tue June 17, 2008 11:30 AM User is offline

Year: 1999
Make: SUZUKI
Model: GRAND VITARA
Engine Size: 2.5
Refrigerant Type: 134A
Ambient Temp: 90
Pressure Low: 199 psi
Pressure High: ?
Country of Origin: United States


hib
Junior Member

Posts: 4
Joined: Jun 2007


Mon June 16, 2008 1:57 PM
User is online

Year: 1999
Make: SUZUKI
Model: GRAND VITARA
Engine Size: 2.5
Refrigerant Type: R134-A
Ambient Temp: 90
Pressure Low: 100
Pressure High: ?
Country of Origin: United States

TextHello
I hope someone can help me. My Suzuki grand Vitara (1999) Ac stopped working. Before I saw white frothy stuff flowing thru the sight glass..NOW its clear . It's blowing warm. The compressor is turning and both fans come on. When I went to add a can of freon on the LOW SIDE, the gauge on my blue hose (attached to can) went up to 100 PSI on the low side! I know its only suppose to be around 30 psi or so.
Why is my air not working? Also, the FREON would NOt go into the low side from the can..the can was pierced and all, and I am on the correct fitting (low side). I did not evacuate or recharge when trying to add this can and think my compressor is coming on and turning in front, but maybe not pumping??
ANY HELP ASAP ..much appreciate! Site glass clear. car blowing warm still..THE A/c fuse is good but I see the Clutch PULLEY to compressor moves and comes on..but how do I tell if compressor is working? ALso, I can turn the clutch compressor VERY easy by hand..maybe its broke??HOT HERE IN FLORIDA..PLEASE help..
also, any ac relay on this car..what would cause this?

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TRB on Tue June 17, 2008 12:57 PM User is offlineView users profile

What are the low and high side pressure readings at 1500rpm? Why did you need to add refrigerant in the first place?

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hib on Wed June 18, 2008 4:32 PM User is offline

Hi it started blowing warm air, so I tried to add one can of freon with a BLUE HOSE w/ guage attached..comes that way from auto parts store. I did NOt evacuate..the problem is I only have a LOW side reading as I don't have any other guages.
The Low side is 100psi. I don't know what the high side is.
As i said, the compressor front is turning (clutch pulley)..but the can of freon will NOt go in at all..the hose is brand new..even with another hose it won't go in.
BOTH fans come on and the ac switch lights up..still blowing WARm air..I don't know if the INSIDES of the compressor are shot..maybe not pumping??does this car have an AC relay? I cannot find it anywhere..any advice much appreciated..thanks

Chick on Wed June 18, 2008 7:55 PM User is offlineView users profile

If the front hub of the compressor is kicking in, you don't have an electrical problem you have a problem with the charging hose you have..Which may be a good thing, because you should not add refrigerant with only the low side pressure. It's time to take it to a shop and have the system evacuated and recharged properly. If you don't have the right tools, this is the only way to do it..Any other way can cost you a lot of money down the road..Hope this helps..

PS: Only add pure R134a, no sealers, O ring lubes or other magic in a can..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

hib on Fri June 20, 2008 11:09 PM User is offline

Hi thanks for your help, but this is a brand new recharging hose..I also tried ANOTHER new recharging hose and the freon would still not go in (on Low side)??? Still 100 PSi on the low side..tried 2 diff new cans of R134A..no sealer ever added..the clutch pulley turns, but does that mean the compressor is pumping? why won't the freon go in?? I don;t see anything in the sight glass..could it be the compressor has a stuck valve inside or is nOt pumping?? thanks for your help.next stop is th shop but trying to save some $$ here please help AC relay bad???

bigkev on Sat June 21, 2008 1:45 AM User is offline

I work at an autoparts store. I watch people do what you did all day. GO GET YOUR VEHICLE EVACUATED FIRST. Where did your old 134 go? I know where it went, it went into the air. Your lines are probably full of air. Go get your car evacuated and checked for leaks before you do anything

Chick on Sat June 21, 2008 6:34 AM User is offlineView users profile

Quote
Originally posted by: hib
Hi thanks for your help, but this is a brand new recharging hose..I also tried ANOTHER new recharging hose and the freon would still not go in (on Low side)??? Still 100 PSi on the low side..tried 2 diff new cans of R134A..no sealer ever added..the clutch pulley turns, but does that mean the compressor is pumping? why won't the freon go in?? I don;t see anything in the sight glass..could it be the compressor has a stuck valve inside or is nOt pumping?? thanks for your help.next stop is th shop but trying to save some $$ here please help AC relay bad???

The clutch pulley turns with the belt, always turning with the engine running, the FRONT of the compressor, the clutch driver needs to be turning when the AC is turned on, the magnetic pull from the coil pulls it inwards to the 'pulley" Have someone turn the ac on and off and see if the front hub is being pulled in...Hope this helps..

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Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

chris142 on Sat June 21, 2008 12:08 PM User is offline

The refrigerant wont go into your system because you have more pressure in your system than the can has. Your compressor is not coming on which would lower the low side pressuure and allow the stuff in the can to be sucked into the system.

You have an electrical problem and now a charge problem as well. This one needs to go to a qualified shop.

hib on Sat June 21, 2008 11:19 PM User is offline

okay everyone, thanks for your help..I guess it's time for the shop..I am thinking that I have no freon because the sight glass is clear and maybe the pressure switch is NOt coming on as a safeguard; thus the compressor is not coming on..I have seen some people bypass the pressure switch to make the compressor kick in..time to get it fixed..thanks for all your help..I don't think I have enough $$ to get this fixed right now..but I do appreciate everyone's input .thanks

hib on Sat June 21, 2008 11:27 PM User is offline

THANKS, everyone for all your help!

mk378 on Sun June 22, 2008 11:54 AM User is offline

You have 100 psi which would be enough to turn the switch on. Probably does not need any refrigerant. It's either an electrical problem or the clutch gap. The clutch gap test is to very carefully tap on the compressor clutch plate in front of the pulley with a suitable tool (engine running and A/C switch on) and see if it snaps in. This must be done very carefully because of the moving parts.

hib on Mon June 23, 2008 7:01 PM User is offline

HI MK378
I just wanted to say that when I turn the ac switch on, I see a bunch of clear bubbles going thru the sight glass..I have 100 psi on the low side but this is with a cheapo store ac hose with a gauge built in. So, I can only check pressure on the LOW SIDE.
The can of freon will not go in at all. Both fans on and front ac clutch PULLEy turning, but I am not sure if the compressor is working (CLUTCh engaging) as I don't know much about ac.
Since I bought this car used, I have never seen the clutch cycle off at all,but the ac used to work, and before I had white frothy stuff going thru my sight glass.
I will try to tap the clutch gap in as you said..let me know if you have any other info
thanks for your reply and help; much appreciated!!

hib on Tue June 24, 2008 5:08 PM User is offline

Hi Chris the ac compressor is coming on and clutch engaging..both fans on. still 100 PSI on low side..could it be a bad compressor valve or compressor piston? thanks

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