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Misfires on number 3 cylinder. - 1999 Mercury Cougar

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Problems could include but are not limited to a bad spark plug, wire, coil pack, fuel injector, ECM, vacumn leak, poor compression and/or coolant in the cylinder.

Posted on Apr 10, 2011

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2 Answers

Cylinder 3 misfires


I would move no3 injector to another cylinder and see if the fault moved . If not the problem is in the injector wires or ECM plug If it moved I would consider a new injector .

Dec 29, 2013 | 2002 Ford Mustang

1 Answer

2002 Dodge Caravan 3.3 liter v6 engine number 3 cylinder misfires


number 3 misfire could be faulty fuel injector.injector could be clogged or faulty. could have bad spark plug or bad wire.could have bad ignition coil or intake manifold leak.

May 07, 2013 | Cars & Trucks

1 Answer

No compression in cylinder number 3


Broken or worn compression rings and faulty valves are normally the cause of low compression. I would suggest you take the vehicle to a larger reputable company for a second opinion to start with.

May 05, 2013 | 2004 Mercury Mountaineer

1 Answer

Misfire in number 3 and number 4 cylinders


Misfire is not always from coil. It could be from spark pug wire and injector.
Solution:
-Test the injector at the misfire cylinder. Is it within specification...?
No.>>> The injector is bad. Replace new one.
Yes. the injectors are good and within its specification.
-Check the plug wire. it might be broken and spark to ground or too much resistant. If so replace it.

Mai Lor

Feb 24, 2013 | 2005 Ford Taurus

1 Answer

I have a ford ranger 2.3. Cylinder 3 misfires obd tester reads code 303?


Trouble Code: P0303

Cylinder Number 3 Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or PCM systemBase engine mechanical problem that affects only Cylinder 3Fuel delivery component problem that affects only Cylinder 3 (i.e., a contaminated, dirty or sticking fuel injector)Ignition system problem (coil, plug) that affects only Cylinder 3

Dec 23, 2012 | Cars & Trucks

1 Answer

Number 3 and 4 are not firing from coil on 2002 subaru outback 2.5


its faulty coil.

Get the compression test done on each coil.these will let you know if its faulty coil or not.

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It can be issue with spark plugs or faulty spark plugs. Also get the compression test done for cylinders. If any of cylinder shows low compression then required, then that particular cylinder will cause misfire.

Also get obd codes scanned, the error code will let you know which cylinder is misfiring or all cylinders are misfiring.

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For your trouble shooting I suggest you to refer the help oinks below. It has step by step details for many engine misfire issues.

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Click the link below:-----


Ford Explorer Cylinder Misfire?

http://whoisbyme.blogspot.in/2012/06/ford-explorer-cylinder-misfire.html

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Engine Misfire codes on Chevrolet Malibu?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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Cylinder 6 Misfire?

http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html

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Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Ford Explorer 5.0L: Engine Miss?

http://whoisbyme.blogspot.in/2012/06/ford-explorer-50l-engine-miss.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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Can cylinder misfire Damage the Catalytic converter?

http://schematicsdiagram.blogspot.in/2012/02/can-cylinder-misfire-damage-catalytic.html

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Car misfires and error code P0306 and P0303 is shown?

http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html

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Chevrolet K1500 No spark, random misfire

http://repairhelpcenter.blogspot.com/2012/11/chevrolet-k1500-no-sparkrandom-misfire.html

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2004 Ford F150: Engine Misfire and Lean Code?

http://whatisbyme.blogspot.in/2012/05/2004-ford-f150-engine-misfire-and-lean.html

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1995 Toyota LS: Misfire at idle or low RPM

http://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html

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Toyota Corolla: Random Misfire?

http://technoanswers.blogspot.in/2012/04/toyota-corolla-random-misfire.html

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2006 Ford Freestar: Misfire on Cylinder Number 2?

http://whatisbyme.blogspot.in/2012/06/2006-ford-freestar-misfire-on-cylinder.html

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This will help.

Thanks.

Nov 28, 2012 | Cars & Trucks

1 Answer

Number five plug not firing


I'm assuming this is a DIS(distibutorless ignition system).If it is,the most common cause is a defective coil pack.Each coil will fire a pair of cylinders together on 4 and 6 cylinder engines(one "waste" spark,one to ignite the mixture).Try swapping the wires at the coil pack to see if the misfire follows the coil tower,or the same cylinder misfires(keep in mind that a check engine light means you will have to clear the code to get the computer to feed that cylinder fuel before you start it up again).If the other cyl on the pack now misfires(i believe 1+5 are on the same pack on a Ford engine),then the coil is bad(spark is "leaking"to ground).If the same cyl still misfires,try swapping a wire+plug from another cylinder.

Mar 14, 2012 | 1996 Mercury Cougar XR7

1 Answer

Car misfires on number 3 and number 5 cylinder. engine has good compression, cap and rotor


CHECK WIRES TO THOSE CYLINDERS ARE THEY MIXED UP ..TRY RUNNING A FUEL SYSTEM CLEANER TO SEE IF IT HELPS CLEAR UP THE PROBLEM..ALSO CHECK FOR ANY INTAKE MANIFOLD LEAKS AROUND THOSE TWO CYLINDERS//IF I REMBER CORRECTLY ITS A TWO PIECE INTAKE MANIFOLD

Dec 25, 2010 | 1998 Dodge Avenger

2 Answers

Obd codes p0300 p0301 p0303 p0305 p0401


P0401 Exhaust Gas Recirculation Insufficient Flow Detected

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0305 Cylinder 5 Misfire Detected


I would check out the EGR valve. That maybe what is causing all the misfires.

Mar 24, 2009 | 1997 Toyota Camry

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