305 TPI Help Please
Thread Starter
Junior Member
Joined: Jan 2008
Posts: 69
Likes: 0
From: Bloomington, IL
Car: 89 Iroc
Engine: 350 TPI
Transmission: Auto
305 TPI Help Please
my engine has a bit of annoying problem...the engine when started floods and if it drops low on rpms, it dies. now i have a scanner and checked for codes. i got the knock senser, MAF, and i do believe the O2 senser. i say i believe so becasue its been since last november i've done any work with the car. i replaced the knock senser and the mass air flow. didnt help so i replaced the ECM, and it didnt help either. the only thing im thinking of is that maybe the ECM i got was bad. oh and when running, raw fuel comes out the exhaust...thanks i would love to get it running again
Thread Starter
Junior Member
Joined: Jan 2008
Posts: 69
Likes: 0
From: Bloomington, IL
Car: 89 Iroc
Engine: 350 TPI
Transmission: Auto
Re: 305 TPI Help Please
i'll have to get back to you on that one. my battery is dead and i'm not going to deal with it, so i'll check tomorrow if i can. hard to find time between school and work.
Senior Member
Joined: Mar 2006
Posts: 926
Likes: 1
From: CALI
Car: 85' Trans Am !best car ever!
Engine: 305tpi 215hp LB9 two bolt,
Transmission: th-700r4
Axle/Gears: stock (3.27)
Re: 305 TPI Help Please
stuck open injector. are you running stocK injectors 23 years old? its fuel related. that be cool to blow flames out the pipe, id have a killa time with that. But i wanna say stuck injector. test the Resistance on each injector. it takes about 45 minutes. i use a needle pin to carefully remove the clips. or the easy way would be to attach a fuel pressure gauge on the rail and prime her. shouldnt drop. past 32psi/max 45
Last edited by transam85dudeman; Sep 1, 2009 at 11:01 PM.
Thread Starter
Junior Member
Joined: Jan 2008
Posts: 69
Likes: 0
From: Bloomington, IL
Car: 89 Iroc
Engine: 350 TPI
Transmission: Auto
Re: 305 TPI Help Please
i would like to add some other little problems i am having...
RPMs read higher than scanner says
Spedometer is high
Fuel Gage doesnt work
Oil Pressure is also off
and i keep blowing my internal lights fuse
this all is driving me nuts. idk if i want to spend the 3k to fix and paint if i cant drive it...
RPMs read higher than scanner says
Spedometer is high
Fuel Gage doesnt work
Oil Pressure is also off
and i keep blowing my internal lights fuse
this all is driving me nuts. idk if i want to spend the 3k to fix and paint if i cant drive it...
Senior Member
iTrader: (1)
Joined: Mar 2009
Posts: 331
Likes: 1
From: Raleigh, NC
Car: 1988 GTA
Engine: 305 tpi (LB9)
Transmission: WC T-5
Axle/Gears: 3.45 posi
Re: 305 TPI Help Please
how do you test the resistance on the injectors and what should it be? I'm having a similar problem with my tpi.
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Supreme Member
Joined: Jul 2005
Posts: 2,123
Likes: 0
From: North Central Mass.
Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: 305 TPI Help Please
In the berlinetta the MAF gets the power from the light module... just something to think about. I don't know if that applies for non -berli cars.
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