Question about 1994 Pontiac Firebird

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94 firebird formula has rough idle every once in awhile...car seems to lunge forward when at a complete stop....power is down and car dogs it in first and second gear

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Try resetting the IAC !!

look online for the gm procedure. it fixed my lurching problem. :)

there is a certain sequence that you do with accel pedal and ignition switch

Posted on Sep 09, 2012

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Check converter is exhaust flowing okay? fuel filter replaced, start here first

Posted on Mar 23, 2011

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My 2007 Chevy Silverado loses power when I come to a complete stop no engine lights appear but if I turn off the truck the problem goes away for awhile .


Loss of power, but no mention of rough or inability to idle (including stalling). If those additional symptoms are part of the problem, check for a vacuum leak to the intake. Listen for hissing or sucking noises near air hoses. Look for loose, cracked, or broken air hose connections. Check PCV valve...Cheap to replace, could be sticking, then loosen after truck sitting with engine off. A vacuum leak will not give any light indications, and vehicle will seem to run normal when applying gas, but will want to stall or run rough (or want to stall) when at idle or sometimes when taking foot off gas when slowing down.

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I have a 1997 dodge avenger es 2.5 liter here's


Check the vacuum line on the fuel pressure regulator for any sign of gas being sucked into the line. A failed regulator will let extra gas get into the engine. If it's okay, have the fuel pressure checked. That's sure a lot of gas, way too much for the engine. Good luck.

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2 Answers

1991 Firebird Formula, timing shift during warm-up.


Change the coolant sensor, they are faily cheap and usually easy to get to. They are also prone to failure on the early years of fuel injection.

Feb 19, 2010 | 1991 Pontiac Firebird

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MASS AIR FLOW ENTIRE UNIT(I GOTTA 1987 FIREBIRD FORMULA AND THE SAME THING HAPPENED TO ME)

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94 Honda Civic DX idles low/rough at a stop


Check for split hose's around the inlet manifold.Sounds like a vacuum leak.
Hope this helps.

Jun 28, 2009 | 1994 Honda Civic

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looks u up for a new head soon,,,,,if u leave it to long possible new motor

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1 Answer

Idles rough sometimes


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