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Where is the fuel pump reset switch on a 1990 Pontiac van?

There is no fuel pump reset switch on a 1990 Pontiac van (or virtually any fuel-injected vehicle). Fuel pumps are controlled by the vehicle's computer and don't have a manual reset button.

If you're having fuel delivery problems, the issue is far more likely to be a faulty fuel pump, a clogged fuel filter, a problem with the fuel pump relay, a bad fuel pump wiring harness, low fuel pressure, or a problem with the computer itself. You'll need to diagnose the problem using a professional mechanic or a diagnostic scanner.