question about vaccum leak.
Thread Starter
Junior Member
Joined: Aug 2008
Posts: 42
Likes: 0
From: Colchester,VT
Car: 91 Firebird Formula 350
Engine: TPI 350
Transmission: 700r4
Axle/Gears: 3:23
question about vaccum leak.
Hey guys,
Im having hessitation problems with my car. when it gets warm she has issues at idle like she wants to stall. i know its a vaccum leak or so i think.
I did the brake parts cleaner test on all the spots i thought there might be the issue. I just read that sometimes the FPR gasket can cause this. Is this a common thing and would that cause it. When i shut the car off she seems to smell of rich fuel. I didnt hear the motor idle up either when testing it.
Should i see if there is a code or any idea's.
Where are the most common places for this to happen.
Thankyou
Im having hessitation problems with my car. when it gets warm she has issues at idle like she wants to stall. i know its a vaccum leak or so i think.
I did the brake parts cleaner test on all the spots i thought there might be the issue. I just read that sometimes the FPR gasket can cause this. Is this a common thing and would that cause it. When i shut the car off she seems to smell of rich fuel. I didnt hear the motor idle up either when testing it.
Should i see if there is a code or any idea's.
Where are the most common places for this to happen.
Thankyou
Senior Member
iTrader: (1)
Joined: Jul 2007
Posts: 1,141
Likes: 2
From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: question about vaccum leak.
It could be a 100 different things. You really need a scanner (or PC/Cable) to see what's going on.
Junior Member
Joined: Sep 2008
Posts: 32
Likes: 0
From: Tucson
Car: 83 Z28
Engine: 355CI
Transmission: T5
Axle/Gears: 3.73
Re: question about vaccum leak.
I'm having the same issues with my 87 I'm still trying to figure out what it is could EGR, fuel pressure regulator that is what i'm trying out for now
Thread Starter
Junior Member
Joined: Aug 2008
Posts: 42
Likes: 0
From: Colchester,VT
Car: 91 Firebird Formula 350
Engine: TPI 350
Transmission: 700r4
Axle/Gears: 3:23
Re: question about vaccum leak.
any thought or things that are most common to check first. also is there a place that has the trouble codes so when i check i can match them up.
Senior Member
iTrader: (1)
Joined: Jul 2007
Posts: 1,141
Likes: 2
From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: question about vaccum leak.
The codes are here: https://www.thirdgen.org/service-eng...ht-error-codes
Could be a vacuum leak, EGR stuck open, bad injector or two, fouled plugs, bad wires/cap/coil/distributor, tired engine (low compression), bad MAF/MAP, temp sensor, and a bunch of other things. You really need the to see what the ECM sees or you're just throwing parts at it.
Could be a vacuum leak, EGR stuck open, bad injector or two, fouled plugs, bad wires/cap/coil/distributor, tired engine (low compression), bad MAF/MAP, temp sensor, and a bunch of other things. You really need the to see what the ECM sees or you're just throwing parts at it.
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