Question about 1996 Chevrolet Corsica

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1996 corsica with a 4 cylinder with check engine light blinking

It just recently lost alot of power it still runs though but i replaced plugs wires and fuel filter dont know what else to do

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If the engine light is on then you need to have it scanned for codes and that will tell you what is wrong

Posted on Jan 30, 2009

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Blinking Check Engine Light / Misfire / Rough Idle


If engine ran well before rebuild make sure spark plug wires are in correct fireing order if this was helpful please leave good feed back

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1 Answer

Blinking Check Engine Light / Rough Idle


Double check the spark plug wire firing order. The cylinder have to have voltage in a certain order. If you do not have a motor manual you can google for this information. just write for example: 2002 ford taurus 6 cylinder spark plug firing order. The firing order goes in sequence usually in a clockwise direction. For example: 1, 5, 3 ,6 2, 4 in a clockwise order. spark plug #1 wire goes to the coil then spark plug #5 wire goes on the coil in a clockwise rotation, next to where spark plug # 1 was connected. This would mean that spark plug number 1 will fire (or get voltage), then spark plug nuimber 5 will fire (get voltage), then spark plug number 3 and so on. The sequence will continue to happen over and over again as long as the car is on. Here's another tip! When it nice and dark outside, turn your car on with the hood open and look at your spark plug wires for any voltage jumping from the wires to the motor metal. Keep in mind you may have to tent yourself with a cardboard to see the voltage arcing to metal. It has too be super dark for you too see this fault. Any arcing will cause your engine to misfire and your engine light to come on. Hope this gives you a starting point to finding the problem. Good Luck.

Mar 07, 2014 | 1996 Pontiac Sunfire

1 Answer

P0304 check engine light. but car runs great


Hi Cliff,
P0304 is an error code for a misfire of #4 cylinder. This usually means that there is poor / no ignition of fuel in the cylinder and is providing little if any power (due to a number of reasons - including: poor compression, or a faulty #4 spark plug, spark plug wire, distributor, etc). In an 8 cylinder engine, that would mean 1/8 of the power is lost; for a 6 cylinder engine 1/6 of the power is lost; and so on. The more cylinders your engine has, the less likely this problem would be noticed. Loosing 1/4 of the power in a 4 cylinder engine would probably not go unnoticed for long.
The unburnt fuel in #4 cylinder is being exhausted with the other cylinders and is being burned in the catalytic converter instead of the engine. If allowed to continue, it may cause the converter to fail. You should have the trouble checked and repaired before it causes other problems.
Good luck!

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I have a 2003 Chevy Blazer, just bought it, after driving it about 30 miles the service engine soon light came on. Its misfire on cylinder #4. Plugs and wires are good. Whats the problem.


it can be the coil for #4 each cilynder has his own coil also try to check make sure the coil is installed properly it happen to me I replaced spark plugs on my own blazer and service engine light came on #1 cilynder was not working so I did took the coil of again and make sure it was ok try to get back in place and problem fix if still doing then you can swap coils but not wires that connect the coils and see if your code reads different spark plug # if so then is time for a new coil

Jun 15, 2009 | 1996 Chevrolet Corsica

1 Answer

Engine lite came on , cylinder 4 is misfiring , sputters and runs really rough until you get over 30-35 mil/ph, we replaced plugs and wires. still doing it ,,,fuel filter maybe ,, where is it located


Is it a 4 or 6 cylinder? 4 cylinders were bad about cracked heads and leaking fuel injectors. Check compression of that cylinder and adjacent. Should be withing 10-15 PSI of each other. Less than 125 PSI is not good either.

Mar 09, 2009 | 1996 Chevrolet Corsica

1 Answer

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did you put the platinum plugs back in.get a noid light test the injector wires make sure they are working . when you hook noid light up these should have a steady blink .if light dont blink just light up.you got pcm problems .if you get no lights you have open wire.besure to check ignition coils that control those misfiring cylinders.

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95 sc400 only seems to be running on part of the 8 cyl.


Buy a small engined car of less than 1500cc with only 4 cylinders ,,,,

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