Hello. I changed my fuel filter (99 ram 2500). Next time on the road I noticed no cruise control. Also no 4WD. It looks like I disconnected a vacuum line when I changed the fuel filter. This is the line with the red arrow pointing to it. I have searched everywhere, and can not locate where this line connects to. Any ideas?
Thanks.

 

it should be down by the pump, i had the same thing happen when they replaced my vp44
the vacuum system is pretty simple. A line comes out of the vacuum pump and goes to the cruise control. A line comes out of the cruise control and goes to a T shaped connector on the driver side firewall. A line comes out of the T and drops down to the transfer case. Another line comes out of the T and goes into the firewall for the HVAC controls. 2 lines come out of the transfer case and go to the CAD

 

Thank You!!!
Found it right in front of the power steering pump. I guess that is the vacuum pump?
4WD is working. Should fix the cruise control too.

Thanks again! Now I can get it on the ramps to deal with the leaking transmission lines.....

 

On mine that rubber piece is starting to rot out, is that fitting something special I need to go to Dodge for?

 

Probably, its just a flared rubber fitting to size up to the anti-backflow valve there. You may be able to mock one up with a couple different sizes of vac tubing...for a lot cheaper.

 

It's the fat thing going bad, I suspect it's what you are calling a 'Back Flow Valve', or check valve. Sounds like either Geno's or a dealer part though.

Thanks for the reply.

 

Just a check valve............ Dorman 47149, like 5 bucks at your local parts store will work just fine, there are multiple others out there as well.

That one is a 1/4" X 1/8" line model, not sure what the line size of the stock one is.