Question about Pontiac Firebird

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Sputtering when hot

1995 Firebird 3.4 liter manual runs fine when it's cold. After 5 to 10 minutes of driving it sputters while accelerating but runs fine once its up to speed.

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  • g loffman
    g loffman Apr 01, 2014

    I don't think it's the intake gasket. I can't see any leaks.

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  • Contributor
  • 8 Answers

Coil or cat is bad

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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SOURCE: 1990 f150 sputters after warmed up.

Replace the fuel filter.

Posted on Jun 25, 2009

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SOURCE: I have a 95 firebird formula LT1 that will sputter

i have a 96 formula. had the same problem. blown intake gasket. it's truley amazing how that can effect the car.
hope this helps.
David

Posted on Jul 27, 2009

juncro
  • 467 Answers

SOURCE: 1998 astro sputtering when taking off and while at driving speed

loose vacuum line, check for same, also check the map sensor and the measure the fuel pressure, make sure its at spec

Posted on Jul 29, 2009

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SOURCE: my 1995 mercedes S500 idles rough, and no power.

I had a similar problem with my 1994 S420.
Before taking it to the shop check the following:
Distributor covers, Rotors and Spark Plugs. That's what my car needed. Before I did it two "specialized" MB mechanics wanted to replace the engine wiring harness ($1,000.00) and the other wanted to replace Air mass sensor, throttle valve actuator ($2,000.00) I hope that's all you need.

Posted on Jan 25, 2010

Testimonial: "You hit it on the head. Had same problem with my '95 S500. diagnosed as bad fuel rotors. Explained to me there is one per cylinder, and were all origi"

  • 10 Answers

SOURCE: Rough idle, sputtering, and backfiring.

try turning ur idle up its the pin on the throtle body just make sure u tuen the engine off and on again fter each adjustment to reset ur computer on ur engine

Posted on Apr 04, 2010

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Rough idle, sputtering, and backfiring.


try turning ur idle up its the pin on the throtle body just make sure u tuen the engine off and on again fter each adjustment to reset ur computer on ur engine

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1995 Jeep grand cherokee is missing while running. When it is under a heavy load (driving fast) it runs fine. When idleing and slow driving it spits and sputters.


I have the same problem on my 95 grand cherokee laredo. Sometimes it starts out fine and after about 10 miles it starts spitting and sputtering. Then after a while it seems to clean out and run fine again for a little while. Then other times it starts out spitting and sputtering at the begining. I changed the fuel filter and that was not it. It is a 4.0L 6cyc. Any Ideas?

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