A/C problems, HELP! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NichIowa · 08-12-2007, 07:18 PM

Well next weekend I am driving 1200 miles in my 70 C20 and am attempting to rebuild my factory A/C. ATTEMPTING. Well I got a new heater core as mine was gone along long time ago (rusted floor pan) and I also got a new compressor (u pull) clutch works great and runs smooth. I also got a new drier and replaced o-rings. hooked up a vacuum pump and only would pump down to 20 and as soon as I turned it off back to zero. So finally my question is, is there a place that is a trend of going wrong with our trucks A/C. Any help would be appreciated.

08-12-2007, 07:18 PM	#1
NichIowa Registered User Join Date: May 2007 Location: Iowa Posts: 3	A/C problems, HELP! Well next weekend I am driving 1200 miles in my 70 C20 and am attempting to rebuild my factory A/C. ATTEMPTING. Well I got a new heater core as mine was gone along long time ago (rusted floor pan) and I also got a new compressor (u pull) clutch works great and runs smooth. I also got a new drier and replaced o-rings. hooked up a vacuum pump and only would pump down to 20 and as soon as I turned it off back to zero. So finally my question is, is there a place that is a trend of going wrong with our trucks A/C. Any help would be appreciated. Last edited by NichIowa; 08-12-2007 at 07:46 PM.

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