Question about 1999 Chevrolet Camaro

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How do you get pressure in the AC system to get the compressor to start?

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  • yadayada
    yadayada May 11, 2010

    is it low on refridgerent?

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  • 131 Answers

Start adding freon in to low side of your ac
that should be enough to get it started.

G

Posted on Jun 20, 2009

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1 Answer

Ac low pressure switch


coolant has nothing to do with the ac system
coolant goes in a radiator
gas goes in the ac system and should be only installed by an accredited ac specialist shop using the correct equipment
If you have to add gas then there is a leak in the system
second point , when you turn on the ac compressor , and start to add gas ,when the gas pressure is sufficient then the ac compressor will switch on
Best to have the specialist do the job for you

Jun 13, 2016 | 1996 Chevrolet Corsica

1 Answer

Why won't the A/C turn on?


You did put 134a back in? But possibly not enough? There is a pressure safety switch somewhere in the system that detects pressure and opens the circuit if not enough freon. At least that is where I would start. Does the Compressor turn freely otherwise by hand? Did you get enough compressor oil into the system (new Compressors need special charge with compressor oil).

Jul 05, 2015 | 2000 Volkswagen Golf

1 Answer

I was told by A/C guy I have a short somewhere to the high pressure switch. something is not kicking on the compressor. another mechanic said I need a new computer. what do you think


go with the ac guy
there are systems that prevent the ac compressor working
high pressure switch which cuts the ac clutch if the head pressure goes too high
low pressure switch which cuts power to the ac compressor if there
is no gas in the system
climate control systems which cut power when the ac is not required
fuses to the ac system
get a better explanation or seek advice from other ac mechanics

May 01, 2015 | Cars & Trucks

1 Answer

AC does not work 2000 Ford windstar


first thing check AC compressor fuse.the AC compressor clutch should engage when you turn on airconditioner if AC compressor dont come on and fuse okay compressor clutch is open or low on refrigerant you need check your AC refrigerant low pressure side and high pressure side need a manifold gauge set. best let garage check out AC system could need system recharged or could have leak in the system.

Jun 19, 2013 | Cars & Trucks

1 Answer

Ac compressor good but wont start


You must have a leak, the compressor will not run if the system is low on charge, the charge carries the oil to lube the parts of the system. Also do an electrical jumper of the compressor cycling/pressure sensing switch.

May 28, 2012 | 2003 Jeep Liberty

1 Answer

Which pins are shorted on AC pressure switch to get the AC compressor to cycle to fill unit with freon?


You should not have to do anything to charge that AC system, except to start the engine and turn on the AC to maximum, then charge the AC system, when there is enough pressure in the system the low pressure switch will trip the AC compressor on and you can continue to fully charge the AC system.

Jun 06, 2010 | 2003 Suzuki Aerio

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

3 Answers

New ac compressor put on worked great now the ac compressor will not come on. it is full of freon


did you oil the compressor? you have to put a predetermined amount of oil in the compressor before running it.

Jun 04, 2009 | 1989 Cadillac Sedan DeVille

2 Answers

Blowin hot air system pressure way to high


is the ac condensor clutch engauging

May 22, 2009 | 1994 GMC Suburban

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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