Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

what is wrong?

Discussion in 'VN - VP Holden Commodore (1988 - 1993)' started by kowan, Jan 28, 2007.

  1. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    (VN S2 MOTOR)

    Ok who can tell me what is wrong with my motor.

    I turn the key on (cold start) without starting the motor and the radiator cooling fan comes on, the motor starts then stops or misfires, the engine symbol light is on, I check the code and it does one flash pause then two flashes, so that is code 12. Thats normal as in OK.

    If I take it for a drive, it starts then stops, it may drive for 20 metres to 1km.

    Any idea what could be doing this?
     
  2. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    I tryed spitting at it and that didnt work...someone must know what is happening
     
  3. cruzncommo

    cruzncommo Banned

    Messages:
    284
    Likes Received:
    3
    Trophy Points:
    0
    Joined:
    Nov 26, 2006
    Location:
    QLD
    Members Ride:
    VP 5spd
    hmm, try kicking it? swearing, etc. have u checked sensors and whatnot?
     
  4. holden007

    holden007 VRII

    Messages:
    1,104
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Dec 18, 2003
    Members Ride:
    Subaru Liberty
    Temperature Sensor (ECU), check that, pretty sure thats your problem. The sensor is located behind the alternator.
     
  5. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    will I need to replace the Temperature Sensor Unit ?
     
  6. Matt_vp

    Matt_vp Donating Member

    Messages:
    651
    Likes Received:
    9
    Trophy Points:
    18
    Joined:
    Jan 1, 2006
    Location:
    Gladstone Qld
    Members Ride:
    vy lumina v6 A4
    sounds like it is running in limp home mode so there must be a problem with one of your sensors, when u checked your fault codes did u let it flash for a while because sometimes it will go 12 12 12 then tell u the fault, or it could be something wrong with your ecu because i think the fault code for that is 12 aswell. just somethings to think about before u buy a temp sensor unit, there should be a way to test it, it might be in the gregorys book..
    Matt
     
  7. MyVPIsFasterThanYourVP

    MyVPIsFasterThanYourVP New Member

    Messages:
    236
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Oct 25, 2006
    Location:
    Kingston
    Members Ride:
    VP Executive S2 3.8L
    have you left the plug for the computer shorted for reading the fault codes?
     
  8. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    I do not understand what you mean????

    Ok I have changed the Temp Sender Unit and it has stopped the fan comming on before the motor starts.

    So that problem has been solved.

    But it still starts and stops now and then and the yellow engine light comes on and off !!!

    What should I do now?????

    Thanks for all your help on this matter.
     
  9. xr388

    xr388 New Member

    Messages:
    28
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Nov 26, 2006
    Members Ride:
    vp wag
    I think he means the aldl plug which you used to show fault codes on cluster.
     
  10. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    ohh.... yeh....done that....still reads 12 doesnt matter how many times it plays 12 12 12 12 12 on and on
     
  11. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    I`m might go back to spitting at it again
     
  12. xr388

    xr388 New Member

    Messages:
    28
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Nov 26, 2006
    Members Ride:
    vp wag
    Have you tried disconnecting the battery for a while to reset ecu and run through test mode again.
     
  13. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    Yes it does work.

    The cooling motor fan was working when the motor wasn't on and the yellow engine light was on while the motor was running and flicking on and off and someone said to check the code to see what code was showing 12 12 12 all ok there. Someone said to replace the Temp sender unit. I changed it and the fan stop. The following day the fan started to start again while the motor was off. "BUGGAR" So I replaced the coil pack thinking it may have been that. "WRONG" That didnt fix the problem. So I changed the ECU "WOOHOO" That fixed it. Bloody old cars.

    Thanks for all your help everyone, Cheers
     
  14. Matt_vp

    Matt_vp Donating Member

    Messages:
    651
    Likes Received:
    9
    Trophy Points:
    18
    Joined:
    Jan 1, 2006
    Location:
    Gladstone Qld
    Members Ride:
    vy lumina v6 A4
    good to hear u sorted it out mate
    Matt
     
  15. 2greedy

    2greedy VP Calais (SSV)

    Messages:
    162
    Likes Received:
    1
    Trophy Points:
    18
    Joined:
    Apr 4, 2006
    Location:
    Queensland
    Members Ride:
    VY SS HBD6speed manual 5.7ltrs of manual GRUNT!!!
    M8 i hate to say it but!... a simple reset probably would have done it rather than replace the ecu? but youv'e done it now and alls good!

    just in case no-one knows but if you pull the fuse to the fuel pump and then put it back in it will re-set the BCM (body control module) which has a lot to do with ya steering and electronics in the vehicle.

    you will know if you done it right cause both front and rear driver side indicators will flash twice!
     
  16. kowan

    kowan Clayton's Commodore

    Messages:
    355
    Likes Received:
    8
    Trophy Points:
    0
    Joined:
    Sep 5, 2005
    Location:
    Far North QLD
    Members Ride:
    91 Clayton's Commodore/Toyota Lexcen
    And where were you when I needed that info mate???? :bang:
     
  17. 2greedy

    2greedy VP Calais (SSV)

    Messages:
    162
    Likes Received:
    1
    Trophy Points:
    18
    Joined:
    Apr 4, 2006
    Location:
    Queensland
    Members Ride:
    VY SS HBD6speed manual 5.7ltrs of manual GRUNT!!!
    lol was probably on the piss with me m8's m8 :whistling
     
  18. 88GreenVN

    88GreenVN Next Exit Left

    Messages:
    6,793
    Likes Received:
    125
    Trophy Points:
    63
    Joined:
    Jun 12, 2006
    Location:
    Surprise, Arizona
    Members Ride:
    Dodge Ram Van 1500 5.2 V8
    The main engine fuse is the one to pull - leave it out for 10 sec before putting it back in.

    But the ECU can also be stuffed - one way to check is to put the old one back in before you toss it out. See if it behaves badly again.
     

Share This Page