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2003 Sebring coupe lxi multiple cylinder misfire... New plugs New wires New distributor( inc. Camshaft sensor, coil pack) Very good compression What could it be!?!

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Crank sensor

Posted on Dec 04, 2012

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Please follow the link to an explanation of what causes this condition and possible solutions to the problem. There is no simple solution unfortunately.

Posted on Dec 04, 2012

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johnf1aresti
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SOURCE: 2002 saturn vue cylinder 1,3,5 misfiring when swapped coil pack it went away now cyl 2,6 misfiring.

having PO 304 = Misfire cylinder 4,PO 306 = Misfire cylinder 6, as I read above you have done the most. The thing that you have missed is to check whether the Catalytic Converter is faulty or not. To get an idea check whether you have a smell like rotten eggs at the end of the exhaust,you start having problems with cat and needs replacement. My advice before you go for a cat replacement is good to visit an MOT center and check your emissions and then you decide,

Posted on Aug 10, 2012

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teds_repairs
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SOURCE: Chrysler Sebring, was running like this found out it was distributor, now engine light on for p0300 ( multiple cylinder misfire) why? Is that the distributor too? It's 2003 v6 3.0 lxi coupe

it is the ignition control module in the distributor

Posted on Dec 02, 2012

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1 Answer

2003 sorento 3.5 cranks won't start code 300 302 304 306


The code 300 is a Random/Multiple Cylinder Misfire....a 302 is Cylinder # 2 misfire detected. ..and the same for 304 and 306..being 304 is cylinder 4 misfire and 306 is cylinder 6 misfire...All these at the same time normally is a faulty coil pack..,and or faulty coils...spark plugs.,plug wires.....It should be running horribly or barely ....However it could be internal losing compression.....It could just need a good tune up.....Disconnect battery before changing coils,wires..,or plugs in order to clear the fault codes.....

Feb 17, 2015 | 2003 Kia Sorento

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I have a 2006 Honda Pilot. About a month ago, my check engine light came on. I had it checked at Autozone for the code and it was "Spark Plug Misfire". I replaced all 6 plugs with hight quality NGKs. ...


Not sure, but may be the timing is off. Autozone should be able to check it with a timing light. The timing setting determines the firing of the spark plugs. It it is off, it doesn't matter how new the spark plugs are.

Oct 02, 2017 | Honda Pilot Cars & Trucks

1 Answer

2003 Sebring lxi coupe Multiple misfire with new distributor new crankshaft sensor new plugs and wires


Hi Aka, Vehicles fitted with distributors do not usually have crank or camshaft sensors. As yours is indicating multiple misfire I believe it does not have a distributor bot instead either individual coils or twin coils per two cylinders. Have a diagnostic scan carried out and that will identify which cylinders have had or are still having a problem. It is sometimes required on some vehicles to delete the fault codes before the vehicle will run correctly. All that an be done during the scan. If there are other problems they will also be identified. Regards John

Dec 08, 2012 | Cars & Trucks

1 Answer

2003 Sebring lxi coupe 3.0 with multiple misfire New distributor (camshaft sensor, coil) New crankshaft sensor New plugs and wires Good compression At idle more rough then when on the gas and seems t


okay, that info is helpful i would have said a coil test but okay with a new distributor it should be good, lets look at the egr valve, with a cold engine start it up and feel the egr tube, this tube feeds exhaust to intake, it should not get hot right away, if it does then egr is open causing misfires, also remove vacuum line from the egr valve just in case it is a bad vacuum solenoid , there should be no vacuum to this vacuum hose with cold engine at idle. let me know the out come.

Dec 08, 2012 | Cars & Trucks

1 Answer

Car is running really rough with code p0300 multiple cylinder misfire.. 2003 Chrysler sebring 3.0 just rebuilt engine...


A code P0300 may mean that one or more of the following has happened:

  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuelicon1.png injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computericon1.png

Dec 02, 2012 | Cars & Trucks

4 Answers

2004 Acura MDX 3.5 130,000 miles multiple missfire how do i fix ?


Hi, multiple cylinder misfire, is when the engine cylinders do not fire in the correct order, and do not do it constantly. There is no particular pattern to it. My experience with this condition is that it is usually caused by a faulty ignition coil that is beginning to burn out. It could also be bad wires pluds rotor or cap

Causes Include.
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

Possible Solution:
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
Random misfires that jump around from one cylinder to another. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Jan 11, 2011 | 2004 Acura MDX

2 Answers

Misfire in two cylinders


Check to see if the two cylinders misfiring are on the same coil pack. If so, change the coil pack in question.

This happened to me on 1997 Cadillac Deville Limousine.

Also, check for a blown head gasket with compression test.

Jul 04, 2010 | 2001 Oldsmobile Aurora

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