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chevydog66 · 07-30-2013, 10:38 PM

I recently had my a/c vacced and charged in my 72 GMC truck with 6.0 ls running the new Sanden 508 compressor with R134. It is working but I have a very small leak between the top 2 jamb nuts on the expansion valve. I tried tightening them but no luck. I noticed that a sensor line runs into the evap core. Looks like its not easy to change. I totally rebuilt the heat/ac box last year while the truck was getting painted. Any ideas?

07-30-2013, 10:38 PM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Ever changed a/c expansion valve? I recently had my a/c vacced and charged in my 72 GMC truck with 6.0 ls running the new Sanden 508 compressor with R134. It is working but I have a very small leak between the top 2 jamb nuts on the expansion valve. I tried tightening them but no luck. I noticed that a sensor line runs into the evap core. Looks like its not easy to change. I totally rebuilt the heat/ac box last year while the truck was getting painted. Any ideas? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up