Question about 1988 Pontiac Fiero

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88 fiero starts on it own, but wont stay running.

My 88 fiero will start, but wont stay running. Fuses good, plugs good, will spray enough full to start it, but not to keep it running. I can hear the fuel pump prime when i turn the key, not leaks, no pinched lines. i drove the car, shut it off, ten minutes later it wouldnt stay running.

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The brain is not sending the proper fuel pressure codes to the fuel rail to evenly distribute the fuel to the intake and fuel rail.
perform a fuel pressure test check on it ok? also run a diagnostic scan on it and see what codes come out.

Posted on Jul 26, 2009

  • dowz Apr 20, 2011

    your fuel ingectors are probalbly plugged. the reason it will start is the cold start valve. clean the injectors and you should be fine

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Posted on Jan 02, 2017

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88 rx7 run but wont start


The FC3S is notorious for this and fueling issues. Check all ground points, battery cables and connections. Check the draw from the starter. If the voltage drops below 10V there is not enough power for the ignition, causing weak spark. It really needs to spin over 200rpm cranking. Pop starting does not necessarily mean the compression is good. You need to make sure it cranks fast enough to get a proper compression test with rotary tester, New NGK plugs, new NGK plug wires.

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87-88 fiero runs but only tops out at about 30 after i get up to speed which takes a good block or two slowly. smokes a little but i think its because it has sat for 6 plus years. any tests i can run or...


I had the same problem, maybe 25MPH top speed and difficult to start. Changed out the old gas, installed fresh high octane-problem was worse.
The ignition system was faulty. Pull a High voltage wire and you should see a bright blue spark and hear a crackling noise. If you see a weak yellow spark, you found your problem.
Could be a bad/weak ignition module-rather famous in a Fiero due to heat exposure. Bad pickup coil in the distributor. I replaced the entire (rusty) distributor with a new/rebuilt unit a long with a new Ignition module. Solved the problem!

May 04, 2012 | 1988 Pontiac Fiero

1 Answer

1988 fiero wont start, even when I use starting fluid


If your shooting starting fluid in it and it does nothing I would really take a look at whether or not your getting any kind of spark at all to your plugs.Check your coil or coils that the wires are tight in place.Check all of your fuses And relays for the fuel and ignition system.

Feb 14, 2011 | 1988 Pontiac Fiero

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I have a 88 Fiero GT V6 that has sat for over a year without starting. I put in 5 gallons of gas, and used starting fluid. Starts, but only keeps running while fuel is poured into intake. I suspect water...


1) Running fuel pump to remove water from tank will likely not empty it all, but it might help. Will still be some liquid in bottom of tank.

2) More than likely, the gas has gummed up and is no good, While your draining of the tank will help, may still need to change the fuel filter and clean the injectors. The ability to keep engine running while pouring into the intake is a good sign, but mayfind that more parts need to be cleaned and replaced prior to solving the problem.

Oct 19, 2009 | 1988 Pontiac Fiero

1 Answer

Same exact problem


Check your pump, fuel filter and lines. Most likely If stored one of these three items has a problem.

Jun 27, 2009 | 1988 Pontiac Fiero

1 Answer

If you try to start my fiero 1986 2.8 it sounds like a lawn mower and then sometimes when you try to start it it wont actually wont start? i have replaced everything even the wiring , ecm, sensors, pl


It sounds like you are missing 1 or more cylinders. Replace your plugs if you have not done so recently and make sure they are set to the proper gap. Then try the car again. If you still have a miss, check the wires for continuity with a volt meter. You may need a new set of wires especially if these are original. Check your distributor cap and rotor for corrossion and replace if they show signs of wear.

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2 Answers

1988 Pont Fiero won't start


are you friggin kidding me, nobody has replide to such a friggin stupid *** question.... that is so basic please call me and i will fix it over the phone......562-503-5134 isaac

Jul 24, 2008 | 1988 Pontiac Fiero

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