A/C flow diverts on increasing speed
#1
![Default](https://dodgeforum.com/forum/images/icons/icon1.gif)
i have a 99 B1500 Conversion Van with the 5.2ltr and when i accelerate the air flow diverts from the dash vents (sounds like it's going to the defrost vents but i can't feel any flow there). it's clearly a vacuum related problem, but don't have any idea where to look for a leak. like most recent stuff there's so many hoses and lines it looks like a couple of "hoovers" have climbed into the engine well and had little uns.
any tips (especially with pics) would be greatly appreciated.
any tips (especially with pics) would be greatly appreciated.
Last edited by joemitchell53; 08-30-2013 at 11:02 AM.
#2
![Default](https://dodgeforum.com/forum/images/icons/icon1.gif)
after checking top to bottom i found the culprit. elbow connection going into the top of the vacuum reservior was cracked. i replaced it and the air flow is back where it should be, also fixed the cruise control at the same time (i never realized that it was also a vacuum related problem). here are some photos in case someone else is having these problems and want to check this spot.
Last edited by joemitchell53; 08-30-2013 at 11:03 AM. Reason: fixed problem
#3
![Default](https://dodgeforum.com/forum/images/icons/icon1.gif)
Hope this is helpful as well, but I already knew there was an issue with these vacuum lines, so after I found mine had "unplugged" itself from the tank, I also found the hard plastic line had started chipping/cracking away at one of the bends (after testing the line after the aforementioned tank). Of course a proper replacement cannot be readily found, but I used a rubber vacuum hose piece to "extend" the area that was cracking. Works fine. Glad you resolved it.