Post pressures at 1500 - 2000 rpm.

Also check to make sure no heated air or outside air is getting mixed in.

I think that some people rent those pumps from AutoZone, use them improperly (causing oil to spill) and then they run them while low or out of oil. This obviously causes irreparable damage to the pump. Last year, I was 100 miles from my own vacuum pump. I got the free loaner vacuum pump from local ...

I have a 2006 Silverado that has Dual Zone front controls.My A/C works great but the drivers side will suddenly blow hot air while the passenger side continues to blow cold. If I turn truck off and restart they both blow cold again. I have just recently changed the Drivers Side Actuator door with a...

Hello, new to this forum. How are you all doing? I have a 2000 Chevy Silverado that the AC only blows hot air. I attempted to add freon today, but instead I found a leaking hose that goes from the cannister to the condenser. I replaced that as it had developed a hole rubbing on a metal hose for 312...

mrledee wrote:every morning when I check the truck before starting it up, both the high and low are at 100psi.

I don't see where such readings are of any value. Just shows you have some refrigerant in the system, in equilibrium between gaseous state (the pressure) and liquid.

This afternoon, at 80F, my low would cycle between 20-40psi, and the high would be sitting right around 150 (+/- 5psi or so). The compressor only kicks on for about 1-2 seconds and will stay off for 10-15 seconds (not sure if there is too much or too little freon). Those pressures are low if measur...

Here in Phoenix there are several shops who still do R-12.

Yes, the pressures I mentioned are appropriate for R-12 (I still have one R-12 truck myself). I've only added UV dye to ANY vehicle by pouring some in when the system was still open, or by adding a can of refrigerant that also contained UV dye (no sealers !!!) to the system. AGREE - poking a hole in...

I had the temp sensor from my multimeter in the center vent and when I left I was getting discharge temps in the low 50s , when I went for a drive the temps never dropped. I pulled off into a parking lot after about 4 miles, held the throttle at 2000 RPM and felt the compressor kick off. I came hom...