Thread: Vandura 2500 6.5 Engine stall

Actually, a 1995 van should have a mechanical fuel injection system very similar to the 1984 Suburban you referenced.

A PMD is a pump mounted driver, the "black box" located on the driver's side of the injection pump (if it has not been relocated). It is part of the electronic injection system that began with the 1994 year model vehicles (but not vans).

The OPS is the oil pressure switch. It has a contact for the oil pressure gauge and a separate set of contacts for the electric transfer (lift) pump. The contacts for the lift pump are not large enough to carry the current required by the pump and the switch fails over time. The engine may or may not run without the lift pump, may or may not miss under heavy load, but the injection pump runs hotter without the excess fuel provided by the lift pump.

Your vehicle is probably getting air into the fuel system between the tank and the injection pump. A fuel hose does not always leak fuel out when it lets air in. Check ALL fuel hoses and connections. One hose, under the intake manifold, often is never checked.

It's more knowlegde for me now and will go to bed smarter tonight...lol
I have been told about the pump that is in the frame. I will go back and check this today or get it towes back home...I left it where I was last night.
Again, thanks for the info.