ramthis9501
Senior Member
Anyone ever here of it before? If so, what do I do to fix it? I already checked a vacum line running to the cruise control box, which usually is the problem but it wasn't. So what else do I need to check?
Wild Vents
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Bigtman07
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More than likely its a check valve. I have the same thing. It's like a6 dollar dealer only part. Hardest part is figuring out which one it is.
Bigtman07
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Usually when someone talks about wild vents it when they are accelerating or driving along the door will flip between defrost and normal randomly. I'm assuming that's what he's talking about. Usually this means that there is a vacuum leak on the accessory side of the vacuum lines. This could be anywhere from the cruise to the check valves. Most of the time the check valves have gone bad and need replaced. There are several check valves on the accessory tree. So might as well replace them all.
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ramthis9501
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ok i'll try that, i'll let you know if it works or not. thanks
Bigtman07
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You can do a smoke test on the vac system to check for leaks. Another thing you can try is to take the check valves off and blow through them they only flow one way. That's how i checked mine. But lil frog is right. But ya have to start somewhere. Good to have ya aboard lilfrog.
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ramthis9501
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ok do you know where the accessory tree is? im having trouble finding it
Bigtman07
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Usually its the passenger side of the intake I think. Just pulled all my check valves till I found the weak one. I think its the one that has a few t junctions and goes into the fire wall. I'll try to get ya some pics in the morn.
lilfroger
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VACUUM CHECK VALVE
(1) Remove the vacuum check valve. On gasoline engines, one valve is located in the vacuum supply tube (black) at the intake manifold tap on the right side of the engine. A second check valve is located next to the tee fitting in the vacuum supply tube (black) near the dash panel in the engine compartment.
Make sure you check the condition of the reservoir too. If it's cracked / leaking it wont hold a vacuum during high load conditions:
The vacuum reservoir is mounted in the passenger side cowl plenum area, under the cowl plenum cover/grille panel. The cowl plenum cover/
grille panel must be removed from the vehicle to access the vacuum reservoir for service.
(1) Remove the vacuum check valve. On gasoline engines, one valve is located in the vacuum supply tube (black) at the intake manifold tap on the right side of the engine. A second check valve is located next to the tee fitting in the vacuum supply tube (black) near the dash panel in the engine compartment.
Make sure you check the condition of the reservoir too. If it's cracked / leaking it wont hold a vacuum during high load conditions:
The vacuum reservoir is mounted in the passenger side cowl plenum area, under the cowl plenum cover/grille panel. The cowl plenum cover/
grille panel must be removed from the vehicle to access the vacuum reservoir for service.
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Bigtman07
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Thanks lilfrog great info and pics. That's a big help im sure. Good find and writeup. Is that in the service manual?
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lilfroger
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Bigtman07
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Awesome! At least I know that manual is good for something lol.
4.7Ram5.7Rango
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This whole thread is foreign language to me, haha. Never had a 'wild vent' problem, but it's good to learn what it might be and how to fix it......
OT: Ive yet to see Lilfroger on the forum. A lady, with that truck, and that kinda knowledge........ Im in love!!
OT: Ive yet to see Lilfroger on the forum. A lady, with that truck, and that kinda knowledge........ Im in love!!
lilfroger
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Trust me ... I'm being nice still.
Be thankful you're in the 3rd gen .. all the fun issues like this died w/ the 2nd gen body style. We just get to chase electrical gremlins ... which sensor does what
Be thankful you're in the 3rd gen .. all the fun issues like this died w/ the 2nd gen body style. We just get to chase electrical gremlins ... which sensor does what
ramhunter9
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holy **** ... this girl knows allot ..wow ever dam post i learn something new .
keep up the good work lilfroger.
keep up the good work lilfroger.
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ramthis9501
Senior Member
thanks lil frogger and yes you guys are lucky with the 3rd gen. guess they finally figured the a/c problems out by 02 lol
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ramthis9501
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I may sound stupid, but where is the panel/defrost and the heat/ defrost actuators?
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