Replaced glow plug light still on

Discussion in 'Engine' started by MORGANpl, Aug 12, 2018.

  1. MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    I had the coil light on for few seconds after the engine started. I've check codes and it says glow plug on cylinder 2. I've replace the glow plug and no difference. After engine start it comes on and stays for few seconds. Any idea?
     
  2. clk320x

    clk320x MB Club Veteran

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    Relay?
     
    wu56Shoozz likes this.
  3. bob6600

    bob6600 Hardcore MB Enthusiast

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    As above sounds like the relay. Out of curiosity, what does the code reader read now?
     
  4. Deesidecars7

    Deesidecars7 New Member

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  5. Deesidecars7

    Deesidecars7 New Member

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    Had same problem, changed the relay then it was fine
     
  6. rf065

    rf065 Hardcore MB Enthusiast

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    Same, relay.
     
  7. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Didn't had chance to check as my spring has exploded :(
     
  8. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Update. Replaced the glow plug and replace the glow plug relay. Coil spring light still coming on :(
    Do I need to delete the codes on code reader or it's not plug and relay that causing the problem ?? :(:(
     
  9. BTB 500

    BTB 500 MB Club Veteran

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    Are you 100% positive you replaced the right glowplug?

    What vehicle is this? Presumably not the C180K in your profile!
     
  10. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    No its the E320cdi. On code reader it says cylinder 2 so I replaced that one on cylinder 2.
     
  11. OneForTheRoad

    OneForTheRoad Hardcore MB Enthusiast

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    Its best to change all glow plugs as a blown one can blow the relay also and the relay isn't cheap.
     
  12. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Don't scare me :eek::wallbash:
    I just put new relay .
    So should I now go work tomorrow and plug to snap on to read the codes or don't start the engine, order rest 5 glow plugs and replace them?
    But to replace them I will have to start the engine and warm it up anyway
     
  13. BTB 500

    BTB 500 MB Club Veteran

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    What code(s) are shown now? If you still have it, test the plug you took out ... just to be sure.
     
  14. BTB 500

    BTB 500 MB Club Veteran

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    I know it's possible but my OM642 has had 5 plugs go over a period of about 7 years ... they've only ever been replaced one at a time, as recommended (MB dealer).
     
  15. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    I need to read it tomorrow. But those where before I've replace the plug and relay. Ive used snap on solus ultra(actually I think that after I replace the glow plug the codes where the same)

    2510- check component Y77/1 (boost pressure regulator) Positioner signal fault
    1612-test signal at terminal 15. No signal
    2616- check component B60 (exhaust back pressure sensor) control variation. The exhaust back pressure is to low.
    2134- glow plug cylinder 2

    The first and third code is probably from turbo/actuator which I have in plans to do it as well.
     
    Last edited: Oct 3, 2018
  16. clk320x

    clk320x MB Club Veteran

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    I’ve got that too, replaced the actuator and same thing. Works 99% of the time lol
     
  17. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Sp what you guys recommend? Should I replace all others plugs?
     
  18. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Just bought the rest 5 plugs. Will replace them on Saturday and will see.mayby it will sort the problem
     
  19. OneForTheRoad

    OneForTheRoad Hardcore MB Enthusiast

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    its advice given on the forums sorry , they recon if a plug blows it can blow the relay with it , so best to change all at once , im no expert myself but when you spend £90 on a relay the last thing you want to chance is another old glow plug blowing it again . hopefully changing the rest will sort you out and possibly you changed glow plug 4 not 2 , unsure which end number 1 is on the L6 engine .
     
  20. OP
    OP
    MORGANpl

    MORGANpl Hardcore MB Enthusiast

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    Looking at the engine from front I've replaced second from top on right hand side
     

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