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

85 2.8 stalls when accelerator is pressed

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Old Sep 5, 2010 | 01:55 PM
  #1  
belialsson's Avatar
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85 2.8 stalls when accelerator is pressed

the car will do a short stall where all the power is cut for about 1/2 a sec then start up again and continue this three or four times in a row... and it only occurs when i push the accelerator pedal about half way down. I have been told it could be the injectors but i really dont know... could anyone post their thoughts on this issue plz. Thanx
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Old Sep 5, 2010 | 02:38 PM
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From: Mesquite, Texas
Car: 89 rs, 86 Trans Am
Engine: RS-V6... Trans Am-LG4
Transmission: RS-T5... Trans Am 700r4
Re: 85 2.8 stalls when accelerator is pressed

have you changed the fuel filter?
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Old Sep 5, 2010 | 03:47 PM
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Re: 85 2.8 stalls when accelerator is pressed

yeah the whole fuel system was just replaced short of the fuel rail and injectors. it has a new filter pump and sending unit.
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Old Sep 5, 2010 | 10:46 PM
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Re: 85 2.8 stalls when accelerator is pressed

get an ohm meter and check the resistance on the injectors. Should be at least 12ohm or more.
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Old Sep 7, 2010 | 09:38 AM
  #5  
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Re: 85 2.8 stalls when accelerator is pressed

Will the car drive at all? Or does it just keep stalling out?
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Old Sep 7, 2010 | 05:43 PM
  #6  
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Re: 85 2.8 stalls when accelerator is pressed

it drives but you can only depress the pedal to about halfway before it will stall out...
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Old Sep 8, 2010 | 01:09 PM
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From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Re: 85 2.8 stalls when accelerator is pressed

Check the catalytic convertor, it might be clogged up (the catalyst bed breaks up over the years, and can clog the exhaust)
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