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heating plugs

  • 11-01-2012 3:05pm
    #1
    EastTyrone
    Registered Users, Registered Users 2 Posts: 362 ✭✭


    I drive a renault megane and last night the heating light came up in her, the day when i was driving her she was losing power, like when i had full exceleration and in 5th gear she was only sitting at 60 mile an hour, could heating plugs do that to a car?


Comments

  • #2
    lifer_sean
    Registered Users, Registered Users 2 Posts: 890 ✭✭✭lifer_sean


    I don't know about the Megane specifically, but many diesel cars (eg Ford) use the glow plug light as an engine management fault indicator. You could check your owner manual to confirm if this is the case for the Megane.

    It sounds to me that the car has (had?) an engine management problem and went into the limited power "limp home" mode.

    Some very modern diesels (eg insignia) use the glow plugs when the engine is running for emissions control purposes, but most diesels use for startup only and shouldn't cause the problems you describe.


  • #3
    swhyte027
    Closed Accounts Posts: 419 ✭✭swhyte027


    No no no the glow plug light is seperate.u could have two problems.1 being the glow plugs or glow plug relay.and the second being that the egr valve could be giving trouble.but I do no the Renault injectors andrew giving a lot of trouble at the moment but it could be any number of things.best get it plugged in and scanned or have one of us trusty mechanics check it over .i could name things all day hear to say what it might and might not be.but until I seen it r checked it out I couldn't be sure


  • #4
    Nissan doctor
    Closed Accounts Posts: 8,223 ✭✭✭Nissan doctor


    As stated, on the dci engines the glow plug light is also a fault light for the injection system.

    The glow plugs themselves, on a modern common rail engine, are normally only used on start up so would have no effect on the engine once running so its likely that you have an injector or other fuel delivery issue.

    Proper diagnostics required.


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