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Showing results for tags 'ac problem'.
Found 2 results
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For last 6 mos our suburban will just start blowing hot (~116 degrees) air like the heat is on. Then it will fix itself. Sometimes it will work for weeks at a time and other times switches every time you start it. There’s no leak, and I’ve had some success recalibrating the actuator (pulling fuse). It always fails after turning car off. Ie, we’re never driving with cold air and it just starts blowing hot. The problem is not isolated to just driver, passenger, front or rear. Either the whole system works perfectly or it blows hot out of every vent. Any ideas what I’m dealing with? -
2001 Chevy Silverado Over the months I've noticed the AC getting warmer and warmer. Now it is barely colder than outside (which is about 100f). Details: Compressor cycles on/off; about 3 seconds on and 7 seconds off. I have attached a recharge can to the low side plug. The gauge reads~100 PSI (truck is at ambient temp which is ~65f). I have parts in the mail to convert my R12 manifold gauge to R134a connectors. I have no high side PSI value at this time. With recharge can connected to low side valve and with the truck running with max ac (again ambient temp at 65f): When the compressor engages, the low side gauge goes from 100 PSI to 5 PSI in a matter of 3 to 4 seconds. The compressor disengages. At this time, the low side PSI slowly raises back up to 100 PSI which restarts the compressor shortly after and the cycle goes on... Any takers on helping me or giving me possible causes (and what to do about them)? I have a nagging suspicion that someone slapped a recharge can on it and overfilled it. This vehicle is driven by 5 different people; no one fessed up so far... Have to wait for parts to test high side PSI. But I'm also worried that the low side pressure dropped so fast; I feel this is not normal? Thanks for the help!
