My 2005 Cavalier (5 Spd) seems to be cycling the A/C Clutch.  I know there are at least three(?) switches that control the A/C in the car.
1. A/C Clutch Cycling
2. A/C Relay
3. Pressure Switch
It blows cold air.  So, I THINK that the system is fully charged. (I don't have gauges to check) This thing is constantly cycling, and sometimes when I am at a light for awhile, there is no cold air at all.  Any kind of acceleration is a nightmare, because the clutch is cycling so much.  I had hoped that the A/C Relay was at fault, but the guy at AutoZone told me that there was no way that it could be that if the A/C was working at all.
Do we have any A/C Guru's on the forum that can at least point me in the right direction?  AutoZone does not sell the Pressure switch or the A/C Clutch Cycling switch.  They say that they are dealer only parts.  Which leads me to believe that they could be expensive???
Thanks,
treb
Need to find me a Quote...
 
 
DOH!
This should have been posted in the maintenance forum...  Sorry.
FLAME ON!
treb
Need to find me a Quote...
 
 
If your low on refrigerant it will cause the clutch to cycle.  I would start by getting the system recharged.
 
 
j's only use 1 switch 
so your constant cycling and not cooling at a light means your system is low 
 
 
 
I wasnt sure about the specifics of the J's A/C system.
 
 
Sounds good!  I have that checked!
Thanks,
Treb
Need to find me a Quote...