Please note that this car has an s..load of sensors that may or may not tri gger the compressor clutch solenoid.
Took it to a mechanic (highly recommended for diagnostics)and authorized 2-
3 hours of work. System charge and pressures are right on target. Could n ot find the problem. ($270)Took it to the Kia dealer ($150 diagnostics) and they agree that the pressu res are fine, but, the compressor is weak. Can replace the compressor for a mere $1,350.
Way more money than what I have. Tempted to wire a push button or toggle t o the relay and mechanically force the clutch to go on while driving.
Kia reminded me that the compressor itself is $800. That leaves about $500 ± for them to play with.
I used to do auto air about 30 years ago when things were simpler. Still h ave gages, leak detector etc. Can't believe that a weak compressor would f or some reason cycle on and off, although I do realize that pressures are p robably being read (sensed)on both the low and high sides of the comp.
Any advise greatly appreciated.
Ivan Vegvary