Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

thermo fan not shutting down

Discussion in 'VY Holden Commodore (2002 - 2004)' started by SS Manual, Jan 2, 2011.

  1. SS Manual

    SS Manual New Member

    Messages:
    49
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Jan 2, 2011
    Location:
    SE QLD
    Members Ride:
    VY SS UTE
    Hi all,

    Have had an issue after pulling up at home yesterday in my ute, thermo fan was still running after I turned ignition off.... Couldn't work out the prob so undid the battery. Went back to start it this morning, after re-attaching the battery terminal the fan came on again instantly.

    Had a read through several forums to try and diagnose the problem. Most posts were saying it was a relay that needed replacing...

    Went and identified the relay that when pulled out would shut down the fan and drove down to Supercheap to pick up another one ( It's the 5 lug engine cooling fan relay 1 in the owners handbook) . Upon installing the new relay the problem hasn't gone away...

    I suspect it could be something else, perhaps a dodgy wire somewhere?, coolant thermostat?
    Has this happened to anyone else and did you find an answer before booking it in for some professional help?

    Regards,

    SS Manual.
     
  2. richo7502000

    richo7502000 Member

    Messages:
    46
    Likes Received:
    3
    Trophy Points:
    8
    Joined:
    Jan 13, 2008
    Location:
    Sunbury, Victoria
    Members Ride:
    Gen F GTS, Harley Davidson VRSCF V-Rod Muscle
    Its normally the relay because Holden even released a Techline on this one as they had heaps of this occuring!
    By chance did you start the car and switch it off again, the BCm may have hung up too locking the fault in.
    Cheers
    Richo
     
  3. SS Manual

    SS Manual New Member

    Messages:
    49
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Jan 2, 2011
    Location:
    SE QLD
    Members Ride:
    VY SS UTE
    I did try restarting and running the engine the first time it happened yes, probably ran it for about five/ten seconds. Didn't sort the problem so went about undoing the battery terminal after that.

    You say it's a common fault Richo, the new relay hasn't seen any difference with the issue.

    With the BCM "hanging up" do you mean that it has saved it in its memory to keep the fan running non-stop?

    If so, would I having undone the battery terminal and leaving it overnight not have re-set the BCM, is there a simple way to reset the BCM? Will do a search.

    Thanks for your feedback mate,

    Regards,

    SS Manual.
     
    Last edited: Jan 2, 2011
  4. jetboy

    jetboy You learn til u die

    Messages:
    243
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Feb 26, 2010
    Location:
    Gold Coast QLD
    Members Ride:
    VT exec
    prob incorrect relay , i went to supercheap to get some relays in cluding the 5 pin one and some 4 pin ones an they were incorrect ( numbering on the poles) went to a few other spare parts joints and had the same problem , most of the relays that they stock are for driving lights etc . goto an autolec or holden and get the correct relays . They arnt expensive for genuine ones from your dealer . I had this same problem !!!!
     
  5. Dr HaxZaw

    Dr HaxZaw New Member

    Messages:
    1,462
    Likes Received:
    11
    Trophy Points:
    0
    Joined:
    May 6, 2010
    Location:
    Sydney
    Members Ride:
    R34 GT-T
    the holden one costs the same as the ones at repco or supercheap anyway... tell em which one it is and you know youve got the right relay... no point messing about only to find you got the wrong relay
     
  6. SS Manual

    SS Manual New Member

    Messages:
    49
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Jan 2, 2011
    Location:
    SE QLD
    Members Ride:
    VY SS UTE
    Just had a look at the numbering on the posts, 3 of them match up albeit one is an 87a the other an 87.

    The other two are out, with the original one stamped 98, supercheap one stamped 30. The other incorrect post the original is stamped 30, supercheap one stamped 86.

    Will pick up the correct replacement relay on Tuesday and fingers crossed the problem is no longer.
     
  7. Claudy

    Claudy French Com

    Messages:
    450
    Likes Received:
    2
    Trophy Points:
    18
    Joined:
    May 12, 2006
    Location:
    Perth, Two Rocks
    Members Ride:
    Manual Gen3 VT SS + V6 VT manual turbo
    So did it fix it?? Coz I just havin same problem as
     
  8. SS Manual

    SS Manual New Member

    Messages:
    49
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Jan 2, 2011
    Location:
    SE QLD
    Members Ride:
    VY SS UTE
    Yes, fixed it instantly.
     
  9. Coaly69

    Coaly69 New Member

    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Feb 20, 2011
    Location:
    Bundy
    Members Ride:
    '05 VZ SV8 Auto
    Had same prob in my vz sv8, disconnected the thermo plug behind the radiator for the day an problem solved. Seemed to be plug wasn't fully pushed in allowing moisture to bridge the gap with igniton off. 2 weeks later hasn't happened again.

    -Coaly.
     
  10. 1991_Vn2nV

    1991_Vn2nV New Member

    Messages:
    8,718
    Likes Received:
    65
    Trophy Points:
    0
    Joined:
    Mar 9, 2006
    Location:
    Gumeracha, Adelaide Hills
    Members Ride:
    91 VN Berlina & 03 VY Berlina
    My thermo fan is running non stop when the ignition is on, anyone know what the cause to that may be? It switches off with the ignition but runs non stop as soon as the engine is running? Engine is not running hot obviously, considering it starts as soon as the car does too. Perhaps a temp sensor somewhere?
     
  11. Coaly69

    Coaly69 New Member

    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    0
    Joined:
    Feb 20, 2011
    Location:
    Bundy
    Members Ride:
    '05 VZ SV8 Auto
    I wouldn't be too worried unless it stops and engine gets hot, or keeps going when engine is off. Think of it as a pro-active fan, but yeah makes you uneasy when there is something not working as it should. Does it kick on with the car off/ignition on? Have you tried it on a cold morning?
     
  12. mx kid

    mx kid 5th pinned

    Messages:
    35
    Likes Received:
    1
    Trophy Points:
    0
    Joined:
    Apr 3, 2009
    Location:
    Perth, WA
    Members Ride:
    VXII CLUBSPORT
    ive had the exact same problem in my VS ute about 6 months ago. think its an aftermarket thermo but it was the relay that caused the problem.
    i just blew another one last nite changing the battery, must of shorted it out. ive got a switch inside the cabin to manually turn the thermo on and off. i switch it on all the time. better safe than sorry.
     
  13. Wheatley098

    Wheatley098 Member

    Messages:
    318
    Likes Received:
    1
    Trophy Points:
    18
    Joined:
    Oct 6, 2012
    Location:
    Australia
    Members Ride:
    Commodore VE SSV Ute
    Could you upload a quick video on how to swap relays and where to find? Having the same problem with my VE Ute :/
     
  14. CONROD

    CONROD Member

    Messages:
    550
    Likes Received:
    5
    Trophy Points:
    18
    Joined:
    Jul 23, 2012
    Location:
    SOMEWHERE in the land of OZ
    Members Ride:
    VZ SS THUNDER 6.0l 6 Sp
    For what its worth stick with Genuine gear after all if the original one has lasted 10 years its proven itself and 90% of time its on par with the price of a cheap arse generic look a like.Good to hear its all sorted mate:lock:
     
    sixes likes this.
  15. Stattogirl

    Stattogirl New Member

    Messages:
    8
    Likes Received:
    1
    Trophy Points:
    3
    Joined:
    Feb 26, 2020
    Location:
    Australia
    Members Ride:
    WL statesman
    Hey I have an 05 Statemans thermo fans aren't turning on until the car is off. Would this be a relay issue aswell or something completely different thank you
     

Share This Page