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Matt
Matt, Engineer - BEng Hons
Category: Porsche
Satisfied Customers: 20789
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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I have a 2005 Porsche Cayenne. It starts perfect but in 10

Customer Question

I have a 2005 Porsche Cayenne. It starts perfect but in 10 seconds dies. Is their anything besides the primary fuel pump that needs to be checked out?
Submitted: 1 year ago.
Category: Porsche
Expert:  Matt replied 1 year ago.

Hello

the fuel pump would certainly be high up my list too

Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse, ideally measure the voltage at the pump and check its getting 12V

there's also a control module for the pump which may be at fault

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Customer: replied 1 year ago.
I will try the pump and check out the relay as you suggested. I ordered a OEM fuel pump, flange with filter two seals and a bent pipe. And other suggestions or advise on replacing the primary pump?
Expert:  Matt replied 1 year ago.

Hello

the fuel pump itself will be inside a 'cannister' or sub-assembly that will need taking apart to fit a new pump inside, careful when taking it apart as there's an internal spring and its easy to break the plastic clips so doing it an warm environment really helps