Question about 1996 Ford Windstar

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What would cause a misfire in multiple cylinders/

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A number of things can give you multiple misfire bad coil not enough fuel to injectors bad fuel pump sometimes even a bad o2 sensor. hope this helps some good luck.

Posted on Feb 15, 2013

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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
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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

3 Answers

What causes 2005 2.5l volvo to misfire and show code random multiple misfires i replaced plugs but no good


I would take it back and demand a refund. Could be the crank or cam sensors, an intake leak, faulty coil, or a list of other components.

Aug 26, 2012 | Volvo S60 Cars & Trucks

1 Answer

P0300


Im assuming your asking about the ODB-II codes, this code,P0300 Random/Multiple Cylinder Misfire Detected.
A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.
Here are a few things that could be the cause.
  • 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

    I would start things out with a tune up, new plugs and wires, wires break down after time and could be grounding out, or arcing between themselves causing a misfire.
  • Jul 05, 2012 | Cars & Trucks

    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

    2 Answers

    Engine cranks but wont start has an obd p 300 &p304 help me


    P0300 Random/Multiple Cylinder Misfire Detected, the 304 is for cylinder number 4 any of these could be wrong 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 (read: P030x codes) also will set a P0300 code. 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

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    1 Answer

    1998 Toyota T 100 6 cyl. 2 wheel drive Autozone found Error codes 300,304,306 listed with them as: 300 multiple misfire 304 cylinder 4 misfire 306 cylinder 6 misfire Chilton's Toyota list as: 304...


    I would go with the ones autozone gave to you.then I would check the coil packs for those 2 cylinders and see if that's the problem. If that ain't the problem then I would check the crank sensor

    May 26, 2011 | 1998 Toyota T100

    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

    4 Answers

    Diagnostic codes for 200 Daewoo Lanos..........


    Do you feel a misfire?? Random misfires are usually caused by a lean fuel mixture, the reasons that cause this a to many to list here.

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