what does this do ?
Thread Starter
|
Freshman User
Joined: Apr 2017
Posts: 36
Likes: 0
From: sydney australia
what does this do ?
hi all
does anyone know what this white unit does and what's it called .
its coonected to the above black box .
it has 2 vacume plugs but it only has one vacume connected ,
the small black plastic container had a loose wire that wasn't connected to anything,
its a f100 1986 XLT.
i snapped off the vacuum hose
thanks
does anyone know what this white unit does and what's it called .
its coonected to the above black box .
it has 2 vacume plugs but it only has one vacume connected ,
the small black plastic container had a loose wire that wasn't connected to anything,
its a f100 1986 XLT.
i snapped off the vacuum hose
thanks
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
So, you are in Oz? Would you, please, put that in your info in the user control panel so we don't have to ask every time?
Your HVAC system appears to be quite different from ours. But, are you sure that is a wire and not a hose? If it were a small vacuum hose it could connect to the white thing. However, I don't know what the white thing is. I see that the top screw slot appears to be elongated for adjustment. Have you pulled it off to see if there is something behind it that moves it?
Your HVAC system appears to be quite different from ours. But, are you sure that is a wire and not a hose? If it were a small vacuum hose it could connect to the white thing. However, I don't know what the white thing is. I see that the top screw slot appears to be elongated for adjustment. Have you pulled it off to see if there is something behind it that moves it?
Thread Starter
|
Freshman User
Joined: Apr 2017
Posts: 36
Likes: 0
From: sydney australia
Trending Topics
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Thanks for the location info. 
Does the air temp arm activate the plunger? Perhaps it provides vacuum to a shutoff valve in the water supply to the heater core when the temp is set to its coldest setting. Check the heater hoses for a vacuum-controlled valve.
Does the air temp arm activate the plunger? Perhaps it provides vacuum to a shutoff valve in the water supply to the heater core when the temp is set to its coldest setting. Check the heater hoses for a vacuum-controlled valve.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I would guess it is a cold air valve, or something like that. We don't have them here, but sure wish we did as we have hot water flowing through the heater core at all times, and that makes the Max A/C and Vent positions warmer than they need to be. So, if you find out maybe we can incorporate them?
Lead Driver
Joined: Nov 2013
Posts: 7,155
Likes: 1,166
If you can't find a replacement, can the existing hose barb be repaired?
On other vehicles with similar damage, I'd carefully drill a short way, stopping well short of the internals. Then fit a short piece of brass tube to create a new hose connection. Secure the new brass piece with epoxy on the outside only, and you're good as new. I've done this several times on vacuum parts that were otherwise unobtainable.
On other vehicles with similar damage, I'd carefully drill a short way, stopping well short of the internals. Then fit a short piece of brass tube to create a new hose connection. Secure the new brass piece with epoxy on the outside only, and you're good as new. I've done this several times on vacuum parts that were otherwise unobtainable.
Thread
Thread Starter
Forum
Replies
Last Post
Bernie Lomax
1999 - 2016 Super Duty
8
Nov 26, 2007 01:31 AM
phoneman91
1987 - 1996 F150 & Larger F-Series Trucks
1
Mar 21, 2005 05:59 AM