V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

91 FIrebird w 3.1 V-6 problems

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Old May 13, 2008 | 08:36 AM
  #1  
BlackPhantom's Avatar
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Joined: May 2006
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From: Michigan
Car: 93 Trans Am
Engine: LT-1 383
Transmission: M6
Axle/Gears: Stock
91 FIrebird w 3.1 V-6 problems

I need some help from you V-6 guys

I'm helping a friend with a 91 Firebird with the 3.1 V-6 and this thing is giving us fits.

The car don't want to stay running
It will start and run for a min and if you step on the gas she dies.
It will restart but not for more that 30 sec.

We have done the Fuel filter, Plugs, wires, coil, cap & rotor, no SES, TPS is good, Fuel pressure is 46lbs.

Am I looking a a MAF problem??
Thanks

Last edited by BlackPhantom; May 13, 2008 at 11:15 AM.
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Old May 13, 2008 | 08:46 PM
  #2  
jstrdn90rs's Avatar
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Joined: Jun 2006
Posts: 503
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From: Desert Heat
Car: 90 RS/90 Z-71/73 Vega
Engine: 3.1/5.7 TBI/5.7
Transmission: 700R4/700R4/350turbo
Axle/Gears: 3.23/3.42/3.42
Re: 91 FIrebird w 3.1 V-6 problems

Oh.. the old V6 injector bandit strikes again?? Have you checked those yet?
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Old May 16, 2008 | 07:07 AM
  #3  
r.strauss's Avatar
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From: North Italy
Car: 1990 Pontiac Trans Am
Engine: 3.1 liters (LH0)
Transmission: TH700-R4
Axle/Gears: 4 gears + overdrive
Re: 91 FIrebird w 3.1 V-6 problems

Originally Posted by BlackPhantom
I need some help from you V-6 guys

I'm helping a friend with a 91 Firebird with the 3.1 V-6 and this thing is giving us fits.

The car don't want to stay running
It will start and run for a min and if you step on the gas she dies.
It will restart but not for more that 30 sec.

We have done the Fuel filter, Plugs, wires, coil, cap & rotor, no SES, TPS is good, Fuel pressure is 46lbs.

Am I looking a a MAF problem??
Thanks
Same problem on my 91 firebird ... check the cap of the coil ignition and clean or replace the ignitors.
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