Where is the ffuel pump cut-off switch located on a 1990 Isuzu Trooper?

There isn't a readily accessible, easily located fuel pump cut-off switch on a 1990 Isuzu Trooper like some vehicles have as a standard feature. The fuel pump is controlled electrically, and the cutoff is typically achieved through the ignition system or an inertial switch (sometimes called a crash sensor).

The inertial switch, designed to shut off the fuel pump in a collision, is a more likely candidate. Its location varies by model year and even trim level, but common places to look for it on Isuzus of that era include:

* Under the dash: Often near the steering column or under the glove compartment.

* Under the hood: Sometimes located near the battery or fuse box.

* Passenger compartment, under the carpet: Less common, but possible.

You'll likely need to consult your owner's manual or a repair manual specific to a 1990 Isuzu Trooper to pinpoint the exact location of the inertial switch. The manual will also likely detail how to test if the switch is functioning correctly. It might even be labelled.

If you cannot find an inertial switch, remember that the fuel pump is also controlled by the ignition system. Turning the ignition key to the "off" position should be the primary means of shutting off the fuel pump.