Question about 2000 Pontiac Grand Am GT

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Ac compressor will not come on . What is the most likely cause?

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Most likely low freon in the A/C system. Also a bad fuse for the A/C. Bad A/C clutch or compressor.

Posted on May 02, 2010

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My ac compressor want stay on


if your cars ac compressor runs a second and stops over and over again , this is a classic symptom of low refrigerant level ,. most often caused by a leak in system , most leaks come from shrader valve or actual compressor , but in rare cases there are other causes too !!

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Ac compressor not working while ac switch on of skoda luara


There could be a few reasons why the ac is not working, if you power the compressor it turns on, that means the compressor clutch is working.
The system may be low on freon gas, the next step would be to have a shop hook up to ac system and check gas level. it may be as simple as the system being low. if it is low there may be a leak so have them add dye to the system if it is low.

the system is under pressure caution if you are not ac certified i would not mess with it. adding gas when not needed will cause compressor failure and may even blow hoses, be careful.

I would say the next step would be to check your fuses and then have the freon amount checked, good day

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The ac unit freezes up when it gets really hot and humid out and the ac blows hot air. what would cause this problem? it seems like the unit is freezing up and getting too hot and not allowing itself to...


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I have a 1999 Grand Voyager. Whenever it rains, the serpentine belt comes off. What's the problem and solution?


Ok..that is a strange one.. I am going to hazard a guess and suggest you look to the AC compressor.

When you run the defroster the ac compressor comes on..typically whenever the outside temp is above 40 degrees.. the ac compressor kicks in to dry out air inside.

Often when it rains.. the windows fog.. you turn on the defrost.. the ac compressor tries to come on.. and.. there ya go.. rather there your serpentine belt goes.

Several things could cause this.. worn belt.. failing belt tension-er... or failing ac compressor..

If the ac compressor is frozen meaing it will not turn..when the electric clutch on the front engages.. it would cause the pulley to stop turning.. and the belt would have a hard time staying on a non rotating part.

Or if the belt tension-er is bad..or the belt is worn.. when the additional load of the compressor kicks in.. it jumps off.

Finally it could be a combination of all three..


Best of luck..

Apr 04, 2011 | 1999 Plymouth Grand Voyager

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