Pontiac Firebird 1967-2002 Birds of a feather flock together

help with strange problem

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Old Oct 1, 2011 | 08:27 PM
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Ok guys 95 trans am no cats car started running rough at times. Then it will go back to normal then back again. I'm stumped I haven't had the codes ran yet but my cel is always on since no cats.
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Old Oct 1, 2011 | 08:34 PM
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How does it run does it idle funny not running top shape?
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Old Oct 1, 2011 | 08:38 PM
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Idle sounds ok. It's very wierd it does it everytime I drive it but goes back and forth. I'm not gonna drive it until I figure it out. Scared I may do damage
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Old Oct 1, 2011 | 08:39 PM
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What goes back and forth?
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Old Oct 1, 2011 | 08:48 PM
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The problem. While driving it at times its at normal performance and seems fine then it will run rough. Goes back n forth from each
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Old Oct 1, 2011 | 08:53 PM
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I bet it your mass air flow. Go to autozone they will look up the codes for you
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Old Oct 1, 2011 | 08:56 PM
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Can't do it on my 95. Gotta have em done at a shop. nobody around here does obd1 for free suxx.
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Old Oct 1, 2011 | 09:03 PM
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I thinks its just your mass air flow i would run some fuel injector cleaner in your tank too.
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Old Oct 1, 2011 | 10:02 PM
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I had a Caddy that done that. $100 MAP Manifold Air Pressure sensor fixed it right up . It was doing exactly what you are describing.
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Old Oct 3, 2011 | 10:14 AM
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Ok guys had the codes ran. They didnt give me code numbers just said this. They came up
EGR valve Injector circuit, air circuit.
Any ideas?
Also I cleaned my maf and it looked pretty clean

Last edited by on1wheel01; Oct 3, 2011 at 10:30 AM.
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Old Oct 3, 2011 | 10:26 AM
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Also my egr valve and such have been removed.
I also have a vac line that has been unhooked since I got the car I cant find where it would go. It's the first nipple from front connection off the intake on drivers side
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Old Oct 3, 2011 | 11:34 AM
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Ok guys I figured it out. I started checking my fuel injectors and such. And I found I had a loose connection on one of my injectors. So shes good now. Thanx for all the help.
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