C5 fuel system
  • Register
  • Help
Results 1 to 6 of 6

Thread: C5 fuel system

  1. #1
    Fellow Frogger! Ceenine's Avatar
    Join Date
    Oct 2010
    Location
    Devonport, Holiday Coast
    Posts
    483

    Default C5 fuel system

    Does the fuel feed unit located in the top of the fuel tank (located under the rear seat) have any pumping function. .Engine type is 2l HDI

    Advertisement
    2014 C5 2.2 HDI Limited Edition Sedan
    2007 C5 2.2 HDI Hatchback
    2007 C4 1.6 HDI EGS Sedan
    Peugeot Mi16 Series 2

  2. #2
    1000+ Posts Ken W's Avatar
    Join Date
    Sep 2002
    Location
    North Brisbane
    Posts
    1,894

    Default

    Haynes manual says there is a low pressure fuel lift pump in the fuel tank to get the diesel through the fuel filter into the high pressure pump at the flow rates required.

    Ken W

  3. #3
    1000+ Posts
    Join Date
    Jun 2013
    Location
    Sydney
    Posts
    8,615

    Default

    We need more info - DW10B or DW10C? Fuel systems differ.

    Here is the Delphi system: C5 fuel system-screenshot-15.jpg
    Last edited by seasink; 15th August 2015 at 11:14 AM.

  4. #4
    Fellow Frogger
    Join Date
    Jan 2004
    Location
    Sydney
    Posts
    9,670

    Default

    Yes, the original C5 2.0HDi sold here has a lift pump in the tank unit. The fuse box supply pin often burns and stops the pump. The pump can simply fail eventually, but most would last the normal service life of the car.
    Facelifted and X7 cars with DW10B engines do not have a tank pump and I'd also thought not on the DW10C. The engine driven pumps draw fuel via the filter under vacuum and I think that's what Seasink's picture is showing as the 'transfer pump'.

  5. #5
    1000+ Posts
    Join Date
    Jun 2013
    Location
    Sydney
    Posts
    8,615

    Default

    Here is another pic of a Delphi pump. The rotary transfer pump is driven on the same shaft as the HP pump.
    C5 fuel system-screenshot-15.jpg
    The HDI version has the transfer pump coupled on the other end of the shaft.
    Last edited by seasink; 15th August 2015 at 05:31 PM. Reason: sp, ps

  6. #6
    Fellow Frogger! Ceenine's Avatar
    Join Date
    Oct 2010
    Location
    Devonport, Holiday Coast
    Posts
    483

    Default

    Might explain why they are a bit on the expensive side a very precise instrument. Thanks for the input. I imagine the non-start is due to the pump at the tank end of things caused by fuse box weakness
    2014 C5 2.2 HDI Limited Edition Sedan
    2007 C5 2.2 HDI Hatchback
    2007 C4 1.6 HDI EGS Sedan
    Peugeot Mi16 Series 2

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •