RustyDusty Rabid Cross-eyed Opossum! Joined Jul 26, 2010 Messages 685 Reaction score 5 Location Columbus, OH Aug 29, 2010 #1 How long should my system be able to hold vacuum for after the engine is turned off?
Mrmopartech Well-Known Member Joined Jun 5, 2005 Messages 2,149 Reaction score 90 Location St.Lazare Quebec Canada Aug 29, 2010 #2 Are we talking about the A/C system or the booster,as you are not clearly stating what your problem is or if you are sure what is normal or not,mrmopartech
Are we talking about the A/C system or the booster,as you are not clearly stating what your problem is or if you are sure what is normal or not,mrmopartech
RustyDusty Rabid Cross-eyed Opossum! Joined Jul 26, 2010 Messages 685 Reaction score 5 Location Columbus, OH Aug 29, 2010 #3 Sorry, the AC system. It holds a vacuum for only about 30 seconds after the car is off, then it defaults to defrost.
Sorry, the AC system. It holds a vacuum for only about 30 seconds after the car is off, then it defaults to defrost.
440Ken Well-Known Member Joined Sep 1, 2007 Messages 373 Reaction score 24 Location Spring Hill, Florida Sep 4, 2010 #4 Sound like a bad check valve.
RustyDusty Rabid Cross-eyed Opossum! Joined Jul 26, 2010 Messages 685 Reaction score 5 Location Columbus, OH Sep 23, 2010 #5 That's what I thought. I checked the check valve by blowing/sucking. Must be a cracked hose.