A/C Clutch Cycle Switch On/Off Specs?? - #15-5715
2000 Silverado LS RCSB w/ 5.3L and Harrison compressor
Just replaced all A/C components except for the evaporator and hard lines which were flushed. The compressor is cutting Off / On at higher pressures than what I expect. New low pressure switch is the GM AC clutch cycle switch part# 15-5715. Compressor is cutting off at ~29psi and kicking back on ~55psi, as tested with the vents on the lowest speed setting. When testing with the vents blowing on high the low side pressure maintains 40psi at 75F ambient.
I called AC Delco and dealerships and no one has the specs. Four Seasons switch (37308) lists their spec as Off 25psi and On 44psi, which is more in line with what I would expect. Maybe GM changed the spec to counter the slugging that happens with these low mount compressors?? Or maybe they boxed the wrong part?? I threw away the original pressure switch from 2000 but did notice while replacing the longer part# scribed/engraved on the body did not match the part# on the body of the new switch.
What are the low pressure Off and On specs for the GM AC clutch cycle switch part# 15-5715?
Thanks.
Just replaced all A/C components except for the evaporator and hard lines which were flushed. The compressor is cutting Off / On at higher pressures than what I expect. New low pressure switch is the GM AC clutch cycle switch part# 15-5715. Compressor is cutting off at ~29psi and kicking back on ~55psi, as tested with the vents on the lowest speed setting. When testing with the vents blowing on high the low side pressure maintains 40psi at 75F ambient.
I called AC Delco and dealerships and no one has the specs. Four Seasons switch (37308) lists their spec as Off 25psi and On 44psi, which is more in line with what I would expect. Maybe GM changed the spec to counter the slugging that happens with these low mount compressors?? Or maybe they boxed the wrong part?? I threw away the original pressure switch from 2000 but did notice while replacing the longer part# scribed/engraved on the body did not match the part# on the body of the new switch.
What are the low pressure Off and On specs for the GM AC clutch cycle switch part# 15-5715?
Thanks.