Question about 2003 Pontiac Vibe

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Multiple misfire and clyinder 1 thru 4 misfire. all i did is change plugs and this is comeing up on scanner

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Check you have the plugs leads on the right way.as this will cause the problem.

Posted on May 29, 2011

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1 Answer

Random multiple misfire P0300, P0302, P0304 on 2006 Kia Rio


A competent mechanic will check all probable causes associated with these DTC codes.
Code P0300: Random-Multiple misfire detected. Probable causes:
1. Vacuum leaks, damaged hoses, or improper routing
2. Fuel contamination
3. Ignition system - Ignition module, coil, spark plugs and wires
4. Fuel system
Code P0302: Cylinder 2 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system
Code 0304: Cylinder 4 misfire detected. Probable causes:
1. Control unit software in need of updating
2. Faulty PCM or ECM
3. Faulty fuel injector
4. Ignition system
5. Fuel system

Be sure the invoice enumerates all of these probable causes as having been checked. Also, some of the replacement parts installed earlier may be faulty.

Jan 19, 2014 | Kia Cars & Trucks

1 Answer

1998 Hyundai Accent p0300 random multiple misfire


that particular vehicle has a distributor-less ignition system. completely stand alone and electronic. change around the known good coils and see if the misfires on the computer change. see, what the trouble codes say is your numbers 1 thru 4 cylinders are misfiring inadvertently. if you move the coils around, which there are 4..one to 2 cylinders and if its 4 bad coils giving problems then the codes will move around. it could be the crankshaft tone wheel or the PCM as well. take it to a good diagnostic facility like a hyundai facility if you want it fixed right the first time. the hyundai parts are a little more expensive but they are the BEST part for your car, OEM parts are the way to go and the mechanic has probably seen this before and can tell you whats wrong before you leave easily.

Nov 13, 2013 | Hyundai Motor 1998 Accent

1 Answer

Missing,viborating


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The vibrating tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2009 Ford F-150

1 Answer

Vehicle missing,shaking,engine light comes on


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The shaking tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2004 Ford F150

1 Answer

Codes p0300,p0302 and p0303 are coming up.Is it the plugs, plug wires or could it be something else?


Good Evening, I am sorry to hear you are having problems. Your codes in order are a random cylinder misfire, a clyinder 2 misfire and a cylinder 3 misfire. Which engine do you have in it? I would consider checking the plugs and wires if you have never had them changed. I have seen a lot of places sell a car and not change them or check them since it is running good at the time, and it seems in colder weather that plugs that arent quite up to par just wear out to the point of missing. Check those first and let me know how it goes.

Thanks

Feb 08, 2011 | 1998 Ford Contour

2 Answers

Cyl 1 misfire


bad injector or bad coil for that clyinder, also carbon build up holding valves open so do a top engine clean and see if that cures it.

May 24, 2009 | 1997 Chevrolet Tahoe

1 Answer

1998 Cavalier No Spark in cylinders 1 & 4


ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Jan 13, 2009 | 1998 Chevrolet Cavalier

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