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Communities > Diagnostics > USA Cars > dodge avenger check engine light flashin...
dodge avenger check engine light flashing

3624 Views 10 Replies Latest reply: 2015-08-01 20:35:33


  •   Level 2   
    (43) points
    Gus Arellano
    2015-07-22 13:54:59
    Code i get is p0300 multiple misfire. Checked compression is fine, plugs are good when i disconect each plug indv. the car shakes so they are all working. Fuel compressionis good. Could it be the actual cylinders?

    Replaced: spark plugs, fuel injectors,

  •   Level 9   
    (5837) points
    Ashraf

    2015-07-22 14:23:42 (Reply to:Gus Arellano)

     There could be many reason for Check Engine Light to flash..................Since you have P0300 code for Multiple Cylinder Misfire Detected, that means you have more than one cylinder misfiring ..............Are you sure there was NO any other fault code pointing to any cylinder fault.............?

    You need to check again.................

    1) Cylinder Compression Test
    2) Check Your Coil Packs
    3) Check your Fuel Injectors
    4) Check for any Mechanical Faults

    Hope this helps.......................

  •   Level 10   
    (7890) points
    ede65

    2015-07-23 14:00:03 (Reply to:Gus Arellano)

    -

  •   Level 2   
    (43) points
    Gus Arellano
    2015-07-23 15:37:36
    I did get another code now its saying cylinder 1checked compression and its good. Its at 120. Thanks for the replies.

  •   Level 2   
    (43) points
    Gus Arellano
    2015-07-23 15:40:01
    Also spark plugs were changed and i changed the plug in cylinder 2 to cylinder1 and same code comes up

  •   Level 9   
    (5837) points
    Ashraf

    2015-07-23 16:04:27 (Reply to:Gus Arellano)

     What is the mileage done this vehicle.............?  Have you check if S/Plugs are not oiling up...............Which other fault code you got.................?

  •   Level 10   
    (7890) points
    ede65

    2015-07-23 18:12:41 (Reply to:Gus Arellano)

    no idea

  •   Level 2   
    (43) points
    Gus Arellano
    2015-07-24 15:16:02
    Im not sure what you mean by flash pcm. And how do you do it? Also checked compression agin all the cylinders are at 180 i must of not of hooked up the connection right. Also checked the wire harness with noid light and it all looked good. Also when diconnecting the connectors from the plugs to check them it smelt alot like rotten eggs.

  •   Level 10   
    (7890) points
    ede65

    2015-07-24 17:17:31 (Reply to:Gus Arellano)

    -

  •   Level 6   
    (435) points
    mitch

    2015-07-31 19:38:50 (Reply to:Gus Arellano)

     Lets backup a little. What engine are you working on first. You say you have moved the plugs but what about the ignition coils? When does this misfire happen at idle only or at any speed. If it is a idle only misfire then smoke the intake for port or injector seal leaks on the effected cylinder. What sort of fuel trims are you running? Also if it is a misfire only at idle a lean injector can also cause this. Most misfires caused by local vacuum leaks and slightly lean injectors will go away at off idle condition.
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