vacuum pump?
Senior User
Joined: Mar 2007
Posts: 473
Likes: 3
From: Issaquah, WA
Plug the line at the "T" where it comes from the pump and branches to the PVHS. This will isolate the hubs from the rest of the system. If you still only have defrost, then you have a leak on that side of the circuit somewhere. You can route a line around the reservoir to take that out of consideration. If there problem persists you've got to keep tracing the lines back (no fun) to find the offending line or component.
Good luck.
Good luck.
Senior User
Joined: Jun 2011
Posts: 417
Likes: 0
Ok I plugged the line at the t and had defrost only so I have a leak else where. Bout ready to send it over to ford and let them find the leak. I don't want to invest in a vacuum pump if I'm only gonna use it once
It's a Van Gogh
Joined: Feb 2010
Posts: 7,795
Likes: 1,330
From: Elk Grove, CA
Remove your glove box door (press in tabs on the sides) and you'll see a cluster of vacuum lines. Maybe something fell off. Check out the pic and the AC Mod pdf below for more info.
Lots of good info here:
Air Conditioning Mod - Ranger Shutoff Valve.pdf
Pic of how I ran the HVAC vacuum line directly to the reservoir when I went to manual hubs. All vac to AC, none to hubs. Pull and cap T from res (blue lower center of pic) then disconnect HVAC line and cap hub line (white center-right of pic) and run HVAC line straight down fender to res, like so:
Good luck!
Lots of good info here:
Air Conditioning Mod - Ranger Shutoff Valve.pdf
Pic of how I ran the HVAC vacuum line directly to the reservoir when I went to manual hubs. All vac to AC, none to hubs. Pull and cap T from res (blue lower center of pic) then disconnect HVAC line and cap hub line (white center-right of pic) and run HVAC line straight down fender to res, like so:
Good luck!
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Huh? You need the vacuum pump for the HVAC to work properly. Without vacuum it will always be defaulted to defrost.
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Elder User
Joined: Mar 2012
Posts: 609
Likes: 0
I think he is talking about a pump that is external to the truck, not one attached to it.
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