Occasionally when I shut off my 96 E300 the engine RPM will increase momentarily before shutting off any ideas what this may be? It seems to be happening more often so any ideas would be appreciated.

__________________
Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

Could be a sign your shut-off valve is starting to fail but a more likely candidate is some sort of leak on the fuel delivery. When the shut-off valve is disengaged (car turned off), the shut-off valve switches 2 fuel paths simultaneously such that the lift pump "sucks" the remaining fuel out of the inlet to the IP. A bad shut-off valve O-ring on this inlet or possibly some air on the vacuum side of the fuel delivery could be the culprit.

__________________
Scott C.

2006 E320 CDI (120k miles)
FOR SALE: 1998 E300 Turbo Diesel - Black w/Tan Leather - Euro delivery (236k miles)

By "Shut Off Valve" are you talking about the electohydraulic shut off valve?

__________________
Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

I don't think there's electricity or hydraulics involved. All vacuum baby.

__________________
-justin

1987 300TD, 1987 300TD
2008 R32, 2000 Passat Wagon

Yes. Is has to be energized to start the car so no vacuum here. I had the same delayed stop a few times before I changed the O-ring on mine and it has cleared up for me.

__________________
Scott C.

2006 E320 CDI (120k miles)
FOR SALE: 1998 E300 Turbo Diesel - Black w/Tan Leather - Euro delivery (236k miles)

Thanks guys

__________________
Keith Schuster
2006 E350 98K miles
2013 Ford Explorer 15K miles

Can you just do the shutoff valve alone? I would think that you are disturbing the lines that go into it and they might now leak.

__________________
01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow