will not stay running


Asked by May 11, 2014 at 02:08 AM about the 1986 Pontiac Fiero GT

Question type: Maintenance & Repair

car starts, run's 3 or 4 seconds then quits and it restarts runs 3 or 4 seconds

3 Answers


In those old fieros its important to have a good plugs wires etc. Do a high dollar tune up and change the fuel filter also check the air intake this ethanol fuel is hell on those old fuel injected cars check the pcv valve or idle air control valve

3 out of 3 people think this is helpful.

Thanks, I forgot about the fuel filter,


do not forget the cold start injector (you have seven of them remember..).. Just sayin'... clean them all with a ultrasonic cleaner (thing your wife cleans her jewelry in and buzzes).

Your Answer

Add photo

Related Questions

  • Car doesn't stay running 14 answers

    I have a 4-cyl pontiac fiero se. It's been sitting for about 7 years. when I first started to work on it, it wouldn't run. I took the carb apart, cleaned all the parts, soaked the injector, and pu...

    1984 Pontiac Fiero SE or Indy


    Maintenance & Repair

  • Car doesnt want to stay running 7 answers

    I have an 84 Pontiac Fiero 2.5L 4cyl engine. Ive cleaned the TBI system along with a rebuild kit, got a new Fuel Pressure Regulator, soaked the injector, and put fresh gas in it. its sat for a few y...

    1984 Pontiac Fiero SE or Indy


    Maintenance & Repair

  • fuel isnt coming out of the carburator and the car wont stay running. 9 answers

    So my fiero has been sitting for 7 years and i recently wanted a project, so i got it out and started working on it. The car cranks but it wont fire up. I had someone turn the key while i poured a l...

    1984 Pontiac Fiero Base


    Maintenance & Repair

  • 86 the car start up and then stop runing and will run / if i spray gas into it it run 1 answer

    1986 gt the car will not stay runing it start up and stop running /if i spray gas into it it will run/ i replaced the fuel pump/ fuel pressure reg.

    1986 Pontiac Fiero GT


    Maintenance & Repair

  • car will not stay running 3 answers

    I have replaced the fule filter,injectors,EGR valve, Plugs/wires,exhaust, crank shaft sensor, idle control sensor. The car will run for a couple days and then stop. There is no service engine light ...

    1995 Pontiac Grand Prix 4 Dr SE Sedan


    Maintenance & Repair


Looking for a Used Fiero in your area?

CarGurus has 76 nationwide Fiero listings and the tools to find you a great deal.


Search Pontiac Fiero Questions

Pontiac Fiero Experts

Reputation 200
#1 Steve Neyens
Steve Neyens
Reputation 200
#1 dandyoun
Reputation 200
View All

Related Models For Sale

Used Pontiac Firebird"
11 Great Deals out of 895 listings starting at $2,900
Used Chevrolet Corvette"
422 Great Deals out of 20,178 listings starting at $3,688
Used Chevrolet Camaro"
830 Great Deals out of 38,801 listings starting at $2,650
Used Ford Mustang"
737 Great Deals out of 41,260 listings starting at $900
Used Dodge Charger"
656 Great Deals out of 29,890 listings starting at $1,995
Used Toyota MR2"
15 listings
Used Nissan 300ZX"
162 listings
Used BMW M3"
96 Great Deals out of 1,888 listings starting at $5,495
Used Porsche 911"
145 Great Deals out of 4,408 listings starting at $12,995
Used Pontiac Grand Prix"
30 Great Deals out of 4,397 listings starting at $1,972