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Strange Starting

Discussion in 'Range Rover' started by Paul Wootton, Nov 20, 2021.

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  1. Paul Wootton

    Paul Wootton Active Member

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    P38 4L Gems
    Turn the key and the engine fires but immediatly stops,same for the next 2 tries 4th try the engine starts normally.Anybody have any ideas.
     
  2. gold rover

    gold rover Well-Known Member Full Member

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    As always start with any codes? Is the idle speed too low? Remembering back to a Volvo in the 80s, used to do similar but also would intermittently stall , was a hole in the down pipe. That's as much as I can suggest.
     
  3. oakey

    oakey Well-Known Member Full Member

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    Sounds like a fuelling issue to me
    Taking a few cranks to build up pressure to keep going.
     
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  4. Western Slope Rover

    Western Slope Rover Well-Known Member

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    How old is the fuel pump?
     
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  5. Paul Wootton

    Paul Wootton Active Member

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    not known !
     
  6. Western Slope Rover

    Western Slope Rover Well-Known Member

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    When I had similar issues with my '95 3.9 the hard starting continued to worsen over time. Eventually it died in a round about (of course) and it turned out to be the fuel pump. Thank goodness for the access cover in the boot. :)
     
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  7. Gord Wedman

    Gord Wedman Well-Known Member

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    I seem to recall having a similar problem in my 98. It got to the point were I would get in, turn the key to position 2 and buckle up the seat belt and do any other jobs before starting. I eventually replaced the fuel pump in the tank and solved the problem (actually had to as it died completly). I always recommend changing the pump if you don't know how old it is since they can die suddenly and leave you stranded. They are also not that easy to get on short notice or quick to replace. I suppose you could try measuring fuel pressure at the rail and that might indicate how strong the pump is.
     
  8. Paul Wootton

    Paul Wootton Active Member

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    Thanks all,new fuel pump will be purchased.
     
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  9. Marshall8hp

    Marshall8hp Well-Known Member

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    Another issue that might be worth investigating. If the ECU doesn't see a signal from the MAF, the engine will start, run up to about 500 RPM and then stall. It might be worth pulling the MAF plug and giving it all a squirt with contact cleaner and giving the MAF a good clean with MAF cleaner.

    If your P38 is a GEMS, then new fuel filter when fitting the pump.
     
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  10. Western Slope Rover

    Western Slope Rover Well-Known Member

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    You forgot make offerings, pray and light incense.
     
  11. tomcat59alan

    tomcat59alan Well-Known Member

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    Good call, it's an often overlooked service item, only the Gems had them fitted to the chassis forward of the driver's side rear wheel.
     
  12. Paul Wootton

    Paul Wootton Active Member

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    Many thanks will try the MAF plug first,will put a prayer mat down as well:rolleyes:
     
  13. tomcat59alan

    tomcat59alan Well-Known Member

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    The prayer mat will come in handy if you've got to get under to change the filter.;):eek::D
     
  14. Henry_b

    Henry_b SILENTIUM EST AUREUM

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    Could always check the fuel pressure before spending your hard earned ;)
    GEMS has a pressure regulator on the fuel rail at the back on the left had side it also has a vacuum hose that comes off of the regulator unit and goes into the lower inlet manifold, its hidden down behind the throttle body and below the connector to the ignition coils in an ideal world fuel pressure should be there even after the car has been left standing but the pump will run for a couple of seconds when you switch on the ignition and then all the time the engine is turning. To be fair you are able to use any pressure gauge a generic tyre gauge will work..
     
    Last edited: Nov 23, 2021
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