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VE 2009 Not Starting Nice When Hot

Discussion in 'VE Holden Commodore (2006 - 2013)' started by Nightfox187, Jan 21, 2017.

  1. Nightfox187

    Nightfox187 New Member

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    Hey all

    I have a 2009 VE SV6 with 160***ks been well looked after oil change every 5k and in the shop every 10k

    So my problem is she start ok when cold or sitting longer then 4ish hours but when she is warm is start but it like it not getting Fuel/Air or something it start just it is not happy. it revs really low like 300ish and like the engine is running backwards making a very weird clunky sound for about 1sec or 2 then it is ok again and drives fine. it is hard to explain what is going on if anyone know or has the same problem please help me :/

    I just order a RYCO Z888 VE fuel filter/pump to see if it is that.
     
  2. Gtx2

    Gtx2 New Member

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    Try looking into a coolant temp sensor if your fans are acting wierd aswell
     
  3. blackve76

    blackve76 Well-Known Member

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    sounds like fuel issue like vapour lock, mine at 155K(same servicing as you) sometimes cranks a bit more before firing but runs great.

    When were plugs changed?
     
  4. Nightfox187

    Nightfox187 New Member

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    i change the plugs about 10k ago :) i was thinking fuel as well
     
  5. MYVESSV8

    MYVESSV8 Well-Known Member

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    you have to remove the tank to fit this
     
  6. MYVESSV8

    MYVESSV8 Well-Known Member

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    clean maf tube and maf
     
  7. greenacc

    greenacc Searching for the billion

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    Unlikely to be fuel pump if it starts ok when cold.
    Does it blow any smoke when it starts rough?
     
  8. Gtx2

    Gtx2 New Member

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    Try letting it sit for 4ish hours as u say so cold start should be fine the turn off say a minute after then start again so two cold starts. What happens. Did have exact same problem but different ute took me ages to pin it down coolant temp sensor does some how control air fuel

    Do u need to floor it to start it when hot and backfires once it cranks
     
  9. redvxr8clubby

    redvxr8clubby Active Member

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    Coolant sensor sounds reasonable, but I would think if there is no change in coolant temp after a while, that you should get check engine light and some codes.
     
  10. Sean880

    Sean880 Well-Known Member

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    Just throwing parts at it , and hoping you will stumble on the cause, is not the way to go.

    You have not mentioned if you get a check engine light displaying on the dash display at any stage.

    Putting in a new fuel pump will almost certainly not solve the problem you have described and it is a hassle to do because to fit the in-tank pump unit requires the fuel tank to be removed from the car as another poster advised above. By all means have a new pump fitted but, given the symptoms you have described, you don't appear to have a faulty or weak fuel pump.

    You need to get the car to a mechanic and have him check it out with a scan tool. The problem you described is probably generating a fault code or codes and this should be stored in the system and can be retrieved. If not stored then, given the symptoms, some fault code should nonetheless show up when starting the engine when hot if it performs as you say it does. Then you can begin to trace the source of the problem. I would also be having a look at the short and long term trim fuel trim readings (again with the scan tool) and see what is going on with your engine.

    From your description it sounds like on a hot start the computer is getting a false reading from some source and too little fuel is being delivered, the engine just barely starts and barely runs on a very lean air/fuel mix for a few seconds, and then it apparently corrects and the engine appears to be running normally again. Anyhow get a professional to check it out . It is possibly going to be something straight forward to rectify if you have a competent guy doing the diagnosis.
     
  11. carcollector

    carcollector Member

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    Mine has done similar on occasions, and I suspect the purge solenoid, based on a couple of posts.

    This post from delcowizzid sounds plausible;

    this can happen when the purge solinoid for the carbon canister dies and isnt sealed when the ecu is not commanding it to open.you fill up and goto start the car and it takes a gulp of raw fuel out the vapour line from the real full tank putting the vapour line under the fuel level

    and this one from Michael-08-VE describes where the solenoid is.

    The purge solenoid is on the passenger side sitting just next to the intake manifold, it might make a ticking noise every so often, you'll notice a hose leading under the manifold towards the throttle body, trace it from the throttle body, under the manifold and back to the solenoid, sorry for the shitty description. Long day.


    If your car won't start with normal autostart cranking, try pumping the accelerator like you would with an older car that's flooded. If it starts OK that way, then I'd say start with the purge solenoid. Mine does it very occasionally when I fill it up and it's hot. Pumping the accelerator while it's cranking always gets it started.
     
  12. PORKSTER

    PORKSTER New Member

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    Anyone one have any joy with this problem... Plus this error doesn't generate a fault code had it checked... Ill try the purge solenoid
     
  13. Kingcarl

    Kingcarl Active Member

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    Id try the Purge valve mate, mine was doing the same thing and it fixed it.
     
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  14. kyone

    kyone Member

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    My car has the exact same problem.. I have twice asked mechanics about the purge solenoid valve and both said "I doubt it very much"

    I have my car booked into a fuel specialist on 5 Sep.. hopefully I can get it sorted once and for all. He was one that I mentioned the fuel valve to.

    Things other have found..
    bad solder joint in ECU .. replaced ECU
    Crank angle positioner sensor... I tried this replacement .. didn't fix the issue.
    Throttle body cleaned out.

    One thing that I have done is avoided the bio fuels.. I now use 95.
     
  15. PORKSTER

    PORKSTER New Member

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    Evaporative purge solenoid....... Problems solved
     
  16. Happydaze

    Happydaze Happydaze

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    Had a similar issue on my LS2, would start fine and run fine when cold. Once hot it was very difficult to start and ran like a pig. Let it cool down enough and it was good to go again.
    Put the scanner on it and got Crank Angle Sensor fault. Booked it into mechanics, they said it was a common issue. Ended up being weak starter motor throwing the Crank Angle Sensor out (when hot). New starter motor and all is good.
     

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