Weird A/C problem...
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
Ramsay - are you sure there is no air coming out of the defroster? You say you hear but don't feel it. I only ask because I ran into this yesterday and after reading posts on here I'm 99% sure it's the vacuum leak problem.
Does your truck have the automatic temp controls or is it the *****?
Does your truck have the automatic temp controls or is it the *****?
a lot of vehicles have the thermo sensor in a location that allows the evaporator to over cool,
Tuned
Joined: Mar 2005
Posts: 325
Likes: 1
From: Rhode Island
The vac check valve is in the reservoir which is a black rectangular box/Tupperware thing near the battery on the 6.8... If your driving and get on it or go up a hill and the ad stops coming out of the front vents and changes to the defroster it's because your losing vac. When stepping on the gas you lose vac. That's the point of the reservoir and check valve.
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
The vac check valve is in the reservoir which is a black rectangular box/Tupperware thing near the battery on the 6.8... If your driving and get on it or go up a hill and the ad stops coming out of the front vents and changes to the defroster it's because your losing vac. When stepping on the gas you lose vac. That's the point of the reservoir and check valve.
Tuned
Joined: Mar 2005
Posts: 325
Likes: 1
From: Rhode Island
Yes I know, but in a post someone said there's isn't a check valve and that assumption is wrong. But thanks for pointing out 3rd grade reading.. And as a shop owner, it's imperative to know where components are to properly diagnose, but what the heck do I know- I'm not an expert and rely on this forum for help time to time but knowledge is power.
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