Question about 1999 Saturn SL

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My 1999 saturn SL2 AC does not cool although it has sufficient R-134a. Any ideas? Perhaps bad compressor?

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Could be the compressor or the clutch plate

Posted on May 15, 2010

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3 Answers

2003 ford focus no cool air is blowing out. Could it be the evaporation cord?


Make sure your blower fan is turned on and is blowing air. When you push your a/c button the yellow light should come on. If it is not blowing cool, it could be several things. Low on 134a or the control that has the a/c button on it could be bad or blown fuse, bad compressor, etc. If the air is cool but not cold the 134A is low. If it is still blowing hot, check and make sure that the clutch on the compressor is locked in. It most likely is not. Check ac fuses and ac relay, if they are good, check the 134a ,if low, refill it. This should fix it. Remember that if the a/c clutch is not locking in, you cannot add 134a because of no circulation.On some vehicles, if it is completely out of 134a, the relay will not trip and you will have to bypass the relay to provide power to the compressor to fill it. If you do all of these and it still does not work, you will need to take it to a professional. If you need to, reply back and I will give you more possibilities.(I think that you mean evaporator coil)

Jun 03, 2014 | 2001 Ford Focus

1 Answer

Air conditioner compressor runs - freon is up to proper level....not cooling??


BOTH High and low readings should be checked to have a better idea of what is going on with an AC system but based on the limited information… the compressor is not engaged or is not pumping. Below are some things I would check;

1. Check the high and low gauge readings with the AC on & set on MAX/Recirculate, middle vents with the engine at 2,000 RPM’s, blower speed on high.

2. Check the vent temperatures with a thermometer from the middle vents, far right & far left vents?

3. What is the outside temperature at the time the readings were taken?
4. Check to see if the condenser fan blowing strong?

5. Notice if compressor clutch is cylcling excessively.
Could be overcharged, not enough air going across condenser fins, compressor not pumping sufficiently… BOTH gauge readings are really needed to get a better idea.
Below are normal car AC pressure readings with 134A.

Normal readings on high and low side with AC OFF (static pressure) – Depends on outside temperature, but normally is between 80-105 PSI

Normal low side reading with AC on high speed and MAX & engine at 800-1000 RPM’s – Ranges from 25-35 PSI

Normal high side reading ranges from 200-350 PSI

Don’t assume that if adding little Freon is good that adding a lot is better! Overcharging just a little can decrease the performance of the system and possibly damage the compressor

Thank you for using fixya and good luck, keep me posted. Be glad to help you get your A/C running again soon.

Jun 12, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Air compressor wont come on to to put in 134a


The AC compressor does not have to be running to charge the AC system, and the low pressure switch will even prevent the AC compressor from operating until there is sufficient pressure to operate the AC compressor without damaging it.

Start the engine and turn on the AC, then charge the system with the R-134a and as soon as there is enough pressure built up to trip the low pressure switch off, the AC compressor clutch should then engage and then finish charging the AC system.

May 31, 2010 | 1997 Cadillac DeVille

1 Answer

1999 Saturn SL2 electrical problems with fog lights, cooling fan, ac, running lights. None of them are working.


first place i would start are the MAXIfuses in the main fuse panel in the engine compartment, they are huge green fuses that should be 30A. but they control a large array of things.

Dec 07, 2009 | 1999 Saturn SL

3 Answers

I always have to turn on my ac so that the fan can cool my engine


never seen a saturn in my life ,but if it is a 1999 model then it should be in the radiator ,only newer cars have them in the head ,but their are exceptions to this rule but few and far between and mainly *** or french

Aug 13, 2009 | 1999 Saturn SL

1 Answer

AC not working in 98 Saturn SL2


Did it gradually get warmer over the years or just recently. If it just happened then you could have a leak in the system or a compressor that died. Pressure test the system and verify that the compressor is working. You may get lucky and just need a recharge but more than likely you have a leak somewhere in the system.

Aug 04, 2009 | 1999 Saturn SL

1 Answer

1999 FORD TAURUS EVAP SERVICE PORT


The AC charge port is the on low pressure AC line (large line from compressor) near the firewall. Take care not to overcharge, there are other causes of no cooling like a stuck AC compressor cycling switch or a air temp control blend door motor malfunction, what is the issue u have? does the AC compressor run?

Mar 11, 2009 | 1997 Ford Taurus

1 Answer

Ac fulley charge not getting coole


your compressor clutch might be shot in wich case the system although charged will not circulate the freeon.

Mar 01, 2009 | 1995 Suzuki Sidekick

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