1994 GMC Safari "ac pressures truck" Questions

my ac cabbot run on high speed, it will cool sometimes i have to keep turning switch off and on. what causes this? if cut off in low pressure switch add gas, and if cut in high pressure switch reduce ...

A/C compressor will not start When I turn the AC on the compressor will not run check the freon charge low pressure protection will keep it from turning on

ac compressor has no power going to it in a 2001 safari van trouble shoot blower works heater works but the compressor is not coming on and has no power going to it If the system is low on  freon

What is the problem now? Please can you help? I recently replaced the compressor and recharged the system. It ran cold for about 3 days. Then it ran warm and cold intermittently. Now the AC does not ...

AC stopped blowing through the defrost vents AC stopped blowing through the vents and started blowing through the defrost only - the vaccum hose is properly connected, what is causing this? hi.. Try ...

A/C Compressor Question I'm trying to recharge the ac on my 1994 GMC Safari. I need to turn the compressor on to be able to charge. Where is the compressor relay located? I've done the same thing on ...

...swish sound? Can condensation collect causing a swishing sound below the front passenger's feet? It actually sounds like a bucket of water is being poured out, but no water actually appears. In fact, ...

...ok. Fuel pump relay ok. Has voltage to crank sensor. Need help!!!!!!!!!!!!!!!!!!!!!! Check for AC voltage at injectors. If good, run a compression test. Valve timing may have slipped. Do It ...

ac not cooling. added about 2 lbs r134a, clutch is engaging, not sure if compressor is working. 2 Lbs. is a BUNCH of freon! Are you sure it is not over-charged? Are you using gauges? or just "guessing

...Make sure the low pressure switch on the dryer is plugged up,and the connector on the clutch of the ac compressor,then the problem,might be the low pressure switch,jump the two wires going to it to ...