Question about 1992 Pontiac Firebird

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1992 firebird. 305 engine after warm up starts missing under acceleration

Engine runs bad after warm up starts missing

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Could be a overheating issue the gague may register that it is at correct temperature but maybe just a few degrees warm causing what is called vapor lock where the gas is getting to warm and is evaporating before it gets into intake worked on same car a few years back and it turned out that they removed the botom of fan shroud causing this particular problem if your shroud is all there also check any lines tubes or hoses that lead into your air intake.also check your plug wires if rubbing on manifold when gets hot could cause a short in spark causing misfire.any check engine lights appear in the dash?

Posted on Nov 22, 2014


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Posted on Jan 02, 2017

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SOURCE: Engine running really rough...whine sound when it isn't.

The run rough problem is due a cyl.mis firing,it becaused buy a bad plug,plug wire,coil,or even the ing.module. the servive eng.light flashing is warning you that you have a cyl.misfire that can cause damaget to your catltic converter if you continue to drive it.with may lead to why you think you have a exhaust problem,it may be colgged.

Posted on Dec 27, 2008

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SOURCE: 1998 montana missing and engine light flashing

check engine light can be any numerous of things going wrong; the list goes on. Check engine light is one of the light everyones' hope to never see or have to deal with as long we own the vehicle. check the basic first, spark plugs and the coil and wires. O2 sensor may need replacing or air-mass flow sensor going bad. Coil, O2 sensor and air-mass flow sensor this parts their is no way checking them if their good or bad unless you have a spare one laying around or ohms test meter. I usually recommend take it to the dealer and spend 50-75 bucks for diagnostic, better off than buying parts and guessing hopping its the right parts wasting money on parts does not need to be replacing and can get very expensive, things can add up very quickly. By them plugging into the computer, it will give a mechanic a code and they can narrow down what need replacing, then you can buy the parts and do it your self. if you ned to replace air-mass sensor, look on ebay or get one from the junkyard, new will cost you arms and the legs. I believe auto zone give a free engine diagnostic, I would go there and see if they can retrieved the code, my opinion is they are not accurate has the dealer is however, it may something simple, worth check it out. hope that help some

Posted on Sep 24, 2009

  • 347 Answers

SOURCE: 2001 pontiac grand am : engine runs fine when

try replace cooling sensor

Posted on Oct 10, 2009

  • 74 Answers

SOURCE: my check engine light comes on after driving a

code 32 - egr system error.
code 53- vehicle anti theft system fault
code 54 - fuel pump voltage low
suggest that your vehicle anti theft system is causing the no turn over condition

Posted on Dec 08, 2009

  • 4 Answers

SOURCE: 1992 pontiac grand am no acceleration, a rough idle (engine miss)

Does it have the 2.3l Quad 4 engine? If so replace the plastic piece that the coils go into, they go bad and leak spark to the cam towers and then you get a nice one or multiple cylinder misfire.

Posted on Apr 30, 2010

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My check engine light comes on after driving a while it first had code 32 and then the car (92 firebird, 305) does not start now and checked the codes and they are code 32,53,54. My engine does not role...

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