simple question about vaccume
Thread Starter
Drifting
Joined: Dec 2007
Posts: 1,672
Likes: 8
From: Sumter South Carolina
simple question about vaccume
87 L98, If I have no vacume hoses on this car, will it turn over and then stall out unless I am pumping the gas? or is the turn over and stall out a sign that I have a more severe problem? Like maybe a leak in the intake manifold is one theory. If I am at 30% throtle is only way it will stay on and that makes it hard to drive, if you know what I mean.
Drifting
Joined: Sep 2005
Posts: 1,575
Likes: 3
From: Lowell Arkansas
Do you not have your PCV system and brake booster vacume not hooked up?
I think you have to have the PCV system hooked up, but not sure, never tried it without it.
I think your fuel regulator has to have vacume too.
Did you plug them off, or leave them open?
I can't imagine not having any vacume hoses on your car.
First thing I would do it put the vacume hoses on it, it won't cost much, then you can decide if it has other problems.
I think it must be in pretty good shape to run at all without vacume hoses, but I could be wrong.
Someone will chime in who can tell you for sure.
I think you have to have the PCV system hooked up, but not sure, never tried it without it.
I think your fuel regulator has to have vacume too.
Did you plug them off, or leave them open?
I can't imagine not having any vacume hoses on your car.
First thing I would do it put the vacume hoses on it, it won't cost much, then you can decide if it has other problems.
I think it must be in pretty good shape to run at all without vacume hoses, but I could be wrong.
Someone will chime in who can tell you for sure.
Last edited by 5speedC4; Jan 26, 2008 at 12:34 AM.
Thread Starter
Drifting
Joined: Dec 2007
Posts: 1,672
Likes: 8
From: Sumter South Carolina
Well I bought car in pieces and have about 2 vaccume lines so I would have to go to hardware store to get new lines. Brake booster is hooked up but nothing else. I dont want to run the car w/ out lines just dont want to trace everything out then find out that some other bigger problem is there. But your answer is assuring, I will get right on trying to replace all the lines
Burning Brakes
Joined: Sep 2006
Posts: 1,142
Likes: 0
From: Spring Grove Illinois
Is this a stock engine?? If so you have a "Bunch" of vacuum lines...Get a FSM or maybe Agent86 can repost a diagram or a Search
would work on vacuum lines..Untill you get that under control it will run bad if at all..After that go on to the next challenge and the next..and the next,,and the next......................
would work on vacuum lines..Untill you get that under control it will run bad if at all..After that go on to the next challenge and the next..and the next,,and the next......................
Team Owner
Joined: Jan 2003
Posts: 20,305
Likes: 241
From: Summerland B.C. Canada
A large vacuum leak will give large grief, such as a missing hose from intake base to PCV fitting(driver side valve cover). No vacuum hose from plenum to fuel reg won't kill it, but won't help either. Plug your ports till you figure out what hoses you need. The TB will have 2 or 3 active ports, bottom drivers side, and 1 or 2 on pass side. Plenum has 3, rear for brake booster and 2 on lower pass side.
