Vacum Leak?
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From: Cascade, WI
Vacum Leak?
Hey Everyone,
I'm doing some reasearch for a friend who has a 1999 Ram 5.9L. We both think its got a vacum leak someplace because it cycles between defrost, and vent depending on how much load the motor has on it. Heavy load=defrost and normal cruising=vent (where we wanted it). How do I go about looking for the leak? Am I even right in my diagonosis? Any help would be appreciated!!! Thanks
Evan
I'm doing some reasearch for a friend who has a 1999 Ram 5.9L. We both think its got a vacum leak someplace because it cycles between defrost, and vent depending on how much load the motor has on it. Heavy load=defrost and normal cruising=vent (where we wanted it). How do I go about looking for the leak? Am I even right in my diagonosis? Any help would be appreciated!!! Thanks
Evan
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RE: Vacum Leak?
yup, your right on the money. there's a vacuum line that goes thru the firewall to the a/c controller somewhere and there's a check valve that's gone bad. swap that valve out and you'll be good to go.
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From: Cascade, WI
RE: Vacum Leak?
Heres a side shot with my other toy in the background!!! The tires are 33x12.5x15 on Eagle Rims!
Evan
[IMG]local://upfiles/21393/E98296AE0BEE48CAADDBCCD56D42FE05.jpg[/IMG]
Evan
[IMG]local://upfiles/21393/E98296AE0BEE48CAADDBCCD56D42FE05.jpg[/IMG]
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From: Cascade, WI
RE: Vacum Leak?
By the way, the pics are of my truck, my buddies is green with with stock wheels and tires, and about half the miles...LOL!! Had to mention that cause, I LOVE MY DODGE!!!
Evan
Evan
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RE: Vacum Leak?
ORIGINAL: steve00ram360
yup, your right on the money. there's a vacuum line that goes thru the firewall to the a/c controller somewhere and there's a check valve that's gone bad. swap that valve out and you'll be good to go.
yup, your right on the money. there's a vacuum line that goes thru the firewall to the a/c controller somewhere and there's a check valve that's gone bad. swap that valve out and you'll be good to go.
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RE: Vacum Leak?
wow nice truck. I like the color combo. what mods have you done to it? ... or are planing to do to it?
01RamClassic... I have not had the problem yet so I cant say as to where the part is, I've just read about a hundred posts on it and know it's a problem. what I'd do is go to the dealer and see if you can get a pic of the parts breakdown for that valve and go from there. i will see if I can find anything in the dodge manual that I have and let you know what I find.
01RamClassic... I have not had the problem yet so I cant say as to where the part is, I've just read about a hundred posts on it and know it's a problem. what I'd do is go to the dealer and see if you can get a pic of the parts breakdown for that valve and go from there. i will see if I can find anything in the dodge manual that I have and let you know what I find.
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RE: Vacum Leak?
OK, well that was easier than I thought, on the right side of the intake manifold there is a vacuum port that has a line that goes to the firewall, there are 2 check valves on that line. one of those is your problem. the book says you can just unplug them and swap in a new one.