
Dogbone
-
Posts
64 -
Joined
-
Last visited
Content Type
Profiles
Forums
Gallery
Store
Everything posted by Dogbone
-
(continued from below)
My advice, check and/or tighten your A/C drive belt.
Then check your static pressure on the low side without compressor running, should be around 80 psi or so on an 80 degree F day (rule of thumb, 1 psi per degree F).
When compressor is running, the low side should drop to around 35-40 psi.
Hopefully you'll find you simply need to tighten your A/C belt, and maybe charge your system.
Good luck!
-
Bypassing the belt protection system should not affect the function of the pressure switch, located low behind the front grill near the radiator. Nor should it affect the function of the evaporator temperature switch that cycles compressor to prevent evaporator from freezing.
The clicking you hear was most likely the clutch engaging/disengaging rapidly. Something is causing the compressor to cut in and out. This could either be a loose connection or the pressure switch simply doing it's job, indicating an undercharge or overcharge condition.
The screeching, probably drive belt slippage, could be as simple as the A/C belt needing tightening, or worse the compressor seizing up.