2009 CaymanS Fuel Pump Failures - Page 2

KS-CS · 10-27-2009, 08:29 PM

Quote:

Originally Posted by dadc4s

I hope this isn't the same problem that has been a huge issue in the turbo BMWs. They have been having High pressure fuel pump (HPFP) failures at a very high rate with many owners going through 3 or 4 in 20,000 miles. One wonders if Porsche is using the same supplier.
This seems to be the achilles heel of the direct injection systems which require very high pressure pumps (>3,500psi) to work. BMW has been blaming bad gas but that is clearly not the problem. Is there a way to find out if Porsche is using the same parts as BMW?

This is a picture of the fuel pump on my 06 Cayman S - do those 3 letters at the top tell you anything?

(Of course, I don't have DFI either)

ChrisF · 10-28-2009, 02:27 PM

Where is the access panel to the fuel pump?

KS-CS · 10-28-2009, 08:12 PM

Quote:

Originally Posted by ChrisF

Where is the access panel to the fuel pump?

Underneath the battery tray.

epbrown01 · 10-29-2009, 07:22 AM

Quote:

Originally Posted by KS-CS

This is a picture of the fuel pump on my 06 Cayman S - do those 3 letters at the top tell you anything?

(Of course, I don't have DFI either)

All the German companies seem to use the same suppliers, it's why Audi, Mercedes-Benz and BMW all had crappy window regulators a few years ago. It's not a BMW fuel pump, just one from the same supplier (Seimens, I think - they switched to Bosch for the fix). Not having DFI is why you've had no problems - the pumps seem to have trouble maintaining the high pressures DFI demands - I think I've heard some sort of rubber gasket goes after a few thousand miles, in part because of the ethanol content in US gas. The pumps were updated for the 335i, so there should be a ready fix for Porsche once the dealer network figures out replacing the pump with the same model won't work...

ChrisF · 10-29-2009, 12:57 PM

epbrown: As a 335 owner, I can tell you there is no fix currently available for the HPFP problem.

KS-CS · 10-29-2009, 02:30 PM

Just checked the TSBs on Renntech, and while there isn't one that specifically mentions a problem with the fuel pumps, there is one dated Mar, 2009 reminding dealers that the fuel pumps on 987-2s that they're replacing under warranty, need to be returned to Porsche (for inspection) in the manner that they prescribe. Suggests to me that it has been a problem from pretty early on.

Alan C. · 10-29-2009, 10:39 PM

I received a letter from BMW telling me that they would warrant my pump for 10 years. Early in the game but it will be interesting to see where this one goes.

quick · 10-30-2009, 06:14 PM

Just got a new 2009 Cayman S. Question--I live in the Atlanta area and for the week I've had the car, I used BP/Amoco gas from a station near me. This station's pump guides indicate the fuel may contain up to 10% ethanol. Anyone else in the Atlanta area know of a good gas brand in our area that does NOT contain ethanol?

Thanks.

If my fuel pump is a problem, I'll let you know. I bought off the lot and the car may have been sitting for a while with the attendant issues this may entail.

10-28-2009, 02:27 PM	#17
ChrisF Addict Rennlist Member Join Date: Dec 2005 Location: SoCal & Vancouver Posts: 226	Where is the access panel to the fuel pump? __________________ '07 Audi A3 2.0T '09 BMW 335i '09 Cayman S

10-29-2009, 12:57 PM	#20
ChrisF Addict Rennlist Member Join Date: Dec 2005 Location: SoCal & Vancouver Posts: 226	epbrown: As a 335 owner, I can tell you there is no fix currently available for the HPFP problem. __________________ '07 Audi A3 2.0T '09 BMW 335i '09 Cayman S

10-29-2009, 10:39 PM	#22
Alan C. Addict Rennlist Member Join Date: Jun 2001 Location: Cincinnati Posts: 1,925	I received a letter from BMW telling me that they would warrant my pump for 10 years. Early in the game but it will be interesting to see where this one goes. __________________ Alan C. 09 Cayman S Black/Black PDK, PASM, Sport Chrono 91 Red NSX 35K - Amazing Car 02 996 C2, Black/Black - Gone to a new owner 10.10.06 ForgeLine VR3P Wheels X74, GT3 Bars w Adj. Links, Adj. Rear Control Links EVO V-Flow, Sport Cats, Short Shift MKII Aero Kit

10-29-2009, 02:30 PM	#21
KS-CS User Join Date: Nov 2007 Location: About halfway between HPT and Hallett Posts: 94	Just checked the TSBs on Renntech, and while there isn't one that specifically mentions a problem with the fuel pumps, there is one dated Mar, 2009 reminding dealers that the fuel pumps on 987-2s that they're replacing under warranty, need to be returned to Porsche (for inspection) in the manner that they prescribe. Suggests to me that it has been a problem from pretty early on.

10-30-2009, 06:14 PM	#23
quick User Join Date: Dec 2003 Location: South, USA Posts: 28	Just got a new 2009 Cayman S. Question--I live in the Atlanta area and for the week I've had the car, I used BP/Amoco gas from a station near me. This station's pump guides indicate the fuel may contain up to 10% ethanol. Anyone else in the Atlanta area know of a good gas brand in our area that does NOT contain ethanol? Thanks. If my fuel pump is a problem, I'll let you know. I bought off the lot and the car may have been sitting for a while with the attendant issues this may entail.