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AC in 1999 Dodge Ram 2500


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DodgeForLife
New User

Jun 25, 2015, 5:33 PM

Post #1 of 5 (1838 views)
AC in 1999 Dodge Ram 2500 Sign In

Okay, as we all know all Chrysler made ACs have a vacuum type compression. Well the AC blows constant until about 50 mph then it'll keep running but not shoot out anything. I have to take my whole foot off the gas pedal in order to shoot out the air. It's not supposed to do that obviously. So what's wrong with it? What can I do to over right that. ?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jun 25, 2015, 6:33 PM

Post #2 of 5 (1829 views)
Re: AC in 1999 Dodge Ram 2500 Sign In

"Vacuum type compression!" What on earth are you talking about and what's the actual problem?


T



DodgeForLife
New User

Jun 25, 2015, 6:38 PM

Post #3 of 5 (1825 views)
Re: AC in 1999 Dodge Ram 2500 Sign In


In Reply To
It has a vacuum in it that hold in air and blows it out constantly. But it stops blowing it out completely after I get up to 50 mph. I literally have to take my foot off the pedal and I hear a little pop noise from the dash and then it shoots out. And once I put my foot back on the pedal it stops again


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jun 25, 2015, 6:49 PM

Post #4 of 5 (1821 views)
Re: AC in 1999 Dodge Ram 2500 Sign In

OK - I'll venture a guess. It and many still use vacuum operated ducts to direct air flow or a mix of vacuum actuators and electric ones. Since it seems load related I'd look for a vacuum line heading thru firewall that is leaking and find a vacuum storage reservoir, a ball or can under hood with a check valve that is leaking, part broken since it can work.


Almost all systems default to blowing air out of defrost ducts in a failure not quit blowing air totally.


Vacuum hose may be rubber or a plastic that can look like wire FYI and usually when that type fail it's under hood and near something rubbing or hot that harmed it,


T



DodgeForLife
New User

Jun 25, 2015, 7:02 PM

Post #5 of 5 (1818 views)
Re: AC in 1999 Dodge Ram 2500 Sign In

Awesome thanks!






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