Is this a vaccum problem?
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New User
Joined: Mar 2003
Posts: 5
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From: woodbine u.s
Is this a vaccum problem?
Hey guys. Everytime i accelerate to pass someone or going up a hill etc. , the air coming out of my vents suddenly starts coming out of my defrost vents. as soon as i ease of the gas it starts coming out of my vents again. any help would be greatly appreciated. by the way i have a 95 f-150, 302, 2 wheel drive, automatic. thanks
Senior User
Joined: Sep 2001
Posts: 291
Likes: 1
From: Central Texas
Is this a vaccum problem?
there may be a leak in your vacuum system. I'd check to make sure there isn't a leak in the reservoir. Do you have power brakes? If so, do they appear to working OK? If not it may be the booster leaking.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Is this a vaccum problem?
Most likely, the reservoir glued to the evaporator cover (above the R exhaust manifold behind the ragged silver insulation) is leaking. If it's not obvious where, try spraying it with Windex and blowing into the hose - bubbles will appear at the leak. If you can't get glue to stick, break it off & silicone it back on.
If it doesn't appear to be leaking, trace the line from the reservoir to the check valve/Y and then to the firewall grommet and the manifold. The leak might also be on the back of the A/C control panel or at the vacuum motor inside the dash.
If it doesn't appear to be leaking, trace the line from the reservoir to the check valve/Y and then to the firewall grommet and the manifold. The leak might also be on the back of the A/C control panel or at the vacuum motor inside the dash.
Senior User
Joined: Jan 2003
Posts: 117
Likes: 1
Is this a vaccum problem?
On my 1990 Bronco and a friends 1992 Bronco it was a vacuum line on passenger side of the engine compartment. It goes into the cab and we both had little tears/cracks in this line.
On mine I sleeved the plastic tube with rubber vacuum line; on his we used electric heat shrink to seal the flaw.
On mine I sleeved the plastic tube with rubber vacuum line; on his we used electric heat shrink to seal the flaw.
