Problem with Heat/Air flow
Thread Starter
|
Elder User
Joined: Aug 2009
Posts: 574
Likes: 0
From: Vader
Problem with Heat/Air flow
My new to me 1999 only blows through the top defrost area, not through bi-level or floor. Someone suggested a vacuum leak, where or what do I check? I have auto hubs, this also supposedly might have something to do with it, I just don't know what to look for.
I DO have auto hubs, how can they be the culprit?
I have been suspecting a vacuum leak, could this effect my Turbo? I just don't think it has the gitty up I thought it should.
I DID find two (appearing to be hoses) going nowhere on passenger side engine compartment. One was under the lip of the cowling, like where the window washer hose would go, the second came from some type of solenoid or something mounted to the passenger side fender wall. The two oddly just reach each other like they go together, I plugged them in, but no apparent change.
I DO have auto hubs, how can they be the culprit?
I have been suspecting a vacuum leak, could this effect my Turbo? I just don't think it has the gitty up I thought it should.
I DID find two (appearing to be hoses) going nowhere on passenger side engine compartment. One was under the lip of the cowling, like where the window washer hose would go, the second came from some type of solenoid or something mounted to the passenger side fender wall. The two oddly just reach each other like they go together, I plugged them in, but no apparent change.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Glad you found the right spot!
The problem is most likely a loss of vacuum to the front hubs. The ESOF (electronic shift on the fly) system uses a vacuum pulse to lock the hubs when you turn the **** on the dash. There are some seals in the knuckles that can leak, the lines going from the frame to the hub can rot, several failure points that need to be checked.
Can you get a photo of the 2 unknown lines for us? It would make it a lot easier to figure out what they might be for.
The problem is most likely a loss of vacuum to the front hubs. The ESOF (electronic shift on the fly) system uses a vacuum pulse to lock the hubs when you turn the **** on the dash. There are some seals in the knuckles that can leak, the lines going from the frame to the hub can rot, several failure points that need to be checked.
Can you get a photo of the 2 unknown lines for us? It would make it a lot easier to figure out what they might be for.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
No. You might have a boost leak. Check all you hoses and check for up pipe leaks.
Trending Topics
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Checking for boost leaks would be a good place to start on the turbo, as well as the wastegate adjustment. If it's too loose, it will just flop shut and you won't make much power. The wastegate actuator is the gold canister on the top of the turbo, there is a clip on the turbo end that is a real pain to remove and you need to be careful with not to lose! Remove this, then the 2 10mm nuts that hold the canister onto the turbo inlet housing. Remove the canister from the truck (unplug the red line first) and tighten it up a bit, reinstall and see if it helps.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
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
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
No, open a new tab or window and type in photobucket or webshots. Sign up, then post links to your uploads or insert them in the post.