Question about 1996 Pontiac Firebird

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Car idels good but when accelartes misfires

I changes plugs, cleaned injectors ,replace sparkplug wires car still missed when accelerated.

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Did you try to replace the distributor and rotor?

Posted on Aug 19, 2009

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Posted on Jan 02, 2017

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1991 corolla 1.6L 4AFE.fuel injected. rpms high,misfire,weak acceleration,&exhaust/vacuum leak. other suggestions?


Your best bet on cleaning the fuel system is to add 1 can of B&G44K to the fuel. It is only available through dealership (11.00 a can at Toyota). It will condition your fuel pump and injectors. It is the best on the market and should not be substituted. Do this every 30,000 miles for continued performance.

May 20, 2017 | Cars & Trucks

1 Answer

My engine misses when accelerating and when rpm exceeds 2,000. Check engine code was for cylinder #2 misfire. I replaced the sparkplug and wire on #2, #4, & #6 but, have not figured out how to


Maybe try waiting untill dark ,fire it up,open the hood (kill the hood light)
spray the plug wires with windex(not water) and look for sparks ,if any ,put a set of wires on it. I suppect this is the only problem,bad wires will kill coil packs

Jan 27, 2012 | Oldsmobile Cutlass Supreme Cars & Trucks

1 Answer

I have a explore sport 02 2wd it is showing a cylinder 1 misfire I have change spark plugs


Faulty sparkplug wire or injector.First check the injector harness a poor connection on the number 1 cylinder then i would replace the plug wires and have the injectors cleaned.

Jan 20, 2012 | 2002 Ford Explorer Sport

1 Answer

Cylinder misfire code is on


Its either a bad sparkplug wire or a bad injector.REplace the plug wires and have the injectors cleaned.Also check the injector connection.

Jan 15, 2012 | 1999 Dodge Ram

2 Answers

Tuned up car changed 02 sensor full tank of fuel still running rough


Oxygen sensor only report the condition of the engine the rough running condition can range from a worn sparkplug wires to worn sparkplugs to valve problems to injector problems. with the cadillac deville a tune up should be the first attempt to smooth the rough idle with the inspection of the cap and rotor cap and rotor do have a tendancy to arc internally and create misfire so does sparkplug wire that can leak spark voltage to ground and create misfire. the spark plug wire especially if they are brittle and hard can create issues

Apr 23, 2011 | 1990 Cadillac Deville

3 Answers

My husband did a tune up on my car yesterday and now it wont start it will turn over like it wants to start but it wont he said that its miss firing we have bought 3 new coil packs and still will not start...


If your car is miss firing and your husband changed the coil packs,the wires leading from coil packs to sparkplugs must have got crossed.This will change car timing which will result in the car miss firing.He needs to go over wiring and correct problem for car to run right.You can go online to autozone.com and type in Info about car to get the correct wiring layout.Your problem isnt the new plugs n wires.Its the wiring layout.

Feb 09, 2011 | Pontiac Grand Am Cars & Trucks

3 Answers

I have a missfire in cylinder7 but i have replaced coilpack and sparkplug what else could be causeing this


Fuel supply, air intake and vacuum leak(inside the cylinder). I recommend doing an injector balance test as well as a cylinder leakage (vacuum leaks) test to determine whats causeing the miss.

Jun 07, 2010 | 2001 Lincoln LS

3 Answers

99 dodge caravan #4 cylinder misfires, i replaced spark plug wires and spark plugs. Scanner showed #4 still misfiring, could this be the coil?


It could very well be a bad coil pack,or you have low compression in that cylinder.If the compression is good then go with the coil pack,if not you may need a head gasket or an intake manifold gasket.

Nov 07, 2009 | 1999 Dodge Grand Caravan

1 Answer

Misfire cylinder 00 mazda protage


Could be a defective plug or clogged injector What cylinder was IDd. Isolate the problem cylinder swap the plug from a good cylinder see if the miss moves with the plug,if not try having the injectors cleaned. That should get the zoom zoom back.

Apr 17, 2009 | 2000 Mazda Protege

2 Answers

Misfire on #2 cylinder loseing gas mileage


hi there, this is a valve spring issue on the #2 cylinder. the springs are defiantly bad here.

Feb 21, 2009 | 1998 Acura Integra Type R

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