Okay... so I finally fixed this on my 2006 Pontiac Vibe after researching for weeks. It looks like tons of people have spent hundreds of dollars on this replacing parts and purging and refilling. From my research it very surprisingly comes down to two electrical parts that cost less than $30 each.
Symptoms:
Blower speed 1: Fan works. AC works for most of the time but stops after approx 30 mins and A/C clutch turns on and off every few seconds
Blower speed 2,3,4: Fan works but the AC clutch turns on and off every few seconds and won't stay on. No cool air.
Fix:
1 - Incredibly what fixed for me was replacing the blower motor resistor (http://www.amazon.com/ACDelco-15-80202- ... B000C9FI8S" onclick="window.open(this.href);return false;)
2 - Others have had similar issues and replaced the AC Clutch relay (http://www.amazon.com/Toyota-90987-0202 ... B00FZS42YC" onclick="window.open(this.href);return false;)
So remember to do these simple cheap fixes first before taking it to a mechanic.
Good luck!
AC works sometimes, clutch engages and disengages quickly
Re: AC works sometimes, clutch engages and disengages quickl
I also had to replace the clutch on my AC compressor, but it was absolutely dead.
Odd that yours would click on and then let go. Normally, I'd think that would be a prime symptom of not having enough refrigerant in the system. My truck has a slow leak, and about every other year it develops that problem, clutch clicks on, clicks off right away. Add a can and it works great for another two years
Odd that yours would click on and then let go. Normally, I'd think that would be a prime symptom of not having enough refrigerant in the system. My truck has a slow leak, and about every other year it develops that problem, clutch clicks on, clicks off right away. Add a can and it works great for another two years