IS THERE A FUEL CUT OFF SWITCH ON A 92 LUMINA VAN? IF SO, WHERE IS IT LOCATED?

Make sure battery has a full charge. Have a helper crank it while you check for spark at the plugs. If spark everywhere, use a gage and check proper fuel pressure and fuel injector pulse. How long since a tune-up? Any applicable trouble codes?
Chevy doesn't have a fuel cut-off switch. As far as ford--chevy--Chrysler, ford is the only one I know of that has a fuel cut-off switch.

Most fuel cut off switches are located in the teunk, behind carpeting.

You'll need to get more information. Find an auto parts store that offers free engine code readouts and have them tell you what the engine computer has detected. This will shorten the long list of possible causes. Post again with the results - you may get to post your own solution.
I've had a bad fuel injector driver transistor in the computer (throttle body injection) and an ignition module do this to me.

My first thought would be a vacuum leak in one of the hoses. Rubber hoses get brittle with age and even a small crack in a hose may cause surging. Happened to me in a Lumina.

There usually are several. The airbags have inertia switches near them. The fuel pump relay may also have an inertia switch near by, to cut out fuel in an accident. Fords are in the trunk, but I don't know where it is on GM.

This is a long shot, but I had a similar problem and it ended up being the that water pump locked up and caused it to jump time. Adjust timing and give her a crank.

For 1990 Chevrolet Truck Lumina Van 3.1L TBI 6cyl the Fuel Filter is located: Under vehicle, driver side, below seating area, front of fuel tank, mounted on chassis in fuel line

Hope helps (remember rated and comment this).

you can be getting fuel but it has to be enough pressure to operate injectors. this can only be determined with a gage..does it fire if u spray starting fluid in the intake and crank ? if so u havent enough pressure from pump.

Disconnect the inlet and outlet pipes on the upper right side of the firewall (Its somewhat of a long reach but you can do it) Drain the radiator and then remove the heater core. Its inside the van located in the heater box under the passenger side of the dash board. I believe you may have to remove the inner glove box. I know that is the case on the TransPort and the Silhouette but the Lumina dash is somewhat different in style.

On your 1995 Chevrolet Truck Lumina Van 3.8L SFI OHV , the Fuel Filter is located: Under vehicle, driver side, below seating area, front of fuel tank, mounted on chassis in fuel line
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