I just purchased a 1991 Isuzu Rodeo and the fuel pump is not priming it. The SUV runs it just doesn't want to start.

Hi Leroy Page **mechanic**. If you spell it like that on a business card or on the side of your van, you will get no business!

There isn't one. Just pump, and relay via ECM.

I need to know where the location of the fuel pump reset

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Feb 19, 2020 - I need to know where the location of the fuel pump reset switch is on a 2002 isuzu rodeo. Mechanic's Assistant: Have you ever replaced the ...
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Issue with the Fuel Pump ' Isuzu SUV Forum

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Sep 30, 2012 - On a 95 Rodeo 3.2L the fuel pump relay is controlled by the ECM. When the ignition switch is placed in the Run position the ECM will momentarily ...

when you run the tank dry. all the contaminations that gather on the bottom of the tank may be drawn into the fuel filter blocking it completely.

another possibility is that there is a problem with the fuel pump. they cannot take running dry for very long. so it may have burned out if you kept trying to start the car without fuel

or the fuel pump is simply not able to suck enough fuel to prime itself

possible ignition module or fuel pump both have problem when they get hot or warm. try to smack the fuel tank with a hammer or equivalant. when it wont start if it runs then replace the fuel pump & fuel filter & fuel relay!

Double check that you are getting fuel from the fuel pump to the injectors.

if there is no power to the fuel pump check relays and fuses....UNDERHOOD FUSE & RELAY PANEL IDENTIFICATION Fig. 2: Underhood Fuse & Relay Panel Identification Courtesy of ISUZU MOTOR CO. Fusible Link Identification ? A - 80 Amp (1991-92 3.1L) ? A - 60 Amp Main-1 ? B - 30 Amp Main-2 ? C - 30 Amp (1993-94) ECM (3.2L) ? D - 30 Amp Condenser Fan (A/T Models) Relay Identification ? 1 - Headlight Relay ? 2 - A/C - Heater Relay ? 3 - Starter Relay ? 4 - A/C Compressor Relay ? 5 - Charge Relay ? 6 - Fuel Pump Relay ? 7 - ECM Relay ? 8 - Wiper Relay Fuse & Circuit Breaker Identification ? 1 - 15 Amp (1991) ECM, Fuel Injection System ? 1 - 15 Amp (1992-94 2.6L) ECM, Fuel Injection System ? 1 - 10 Amp (1992-94 3.1 & 3.2L) Heated Oxygen Sensor, Fuel Injection System ? 2 - 20 Amp (1991-92) Fuel Pump ? 2 - 20 Amp (1993-94 2.6L) Fuel Pump ? 2 - 15 Amp (1993-94 3.2L) Fuel Pump ? 3 - 10 Amp (1991) ? 3 - 15 Amp (1992-94) Turn Signal Lights, Hazard Warning Flasher Lights ? 4 - 10 Amp Horn, Door Locks ? 5 - Not Used (1991 3.1L) ? 5 - 10 Amp Charging System, Charge Warning Light WARNING: Always disconnect battery ground cable before servicing "high- current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician. Page 1 of 2 FUSES & CIRCUIT BREAKERS -1994 Isuzu Rodeo LS? 6 - Not Used (1991) (1992-93 2.6L) ? 6 - 10 Amp (1992-94 3.1L & 3.2L) A/T Interlock System ? 6 - 10 Amp (1994 2.6L) Heated Oxygen Sensor, Fuel Injection System ? 7 - 20 Amp Heater/Air Conditioning Blower Controls ? 8 - 10 Amp Air Conditioner Compressor Controls ? 9 - 10 Amp Right Headlight ? 10 - 10 Amp Left Headlight © 2008 Mitchell Repair Information Co., LLC.

Underhood fuse block swap out relay #7 thats the ECM relay.
Ground Circuits Using a DVOM, touch negative voltmeter lead to a good ground. Touch positive voltmeter lead to each ground terminal. With vehicle running, voltmeter should indicate less than one volt. If reading is greater than one volt, check for open, corrosion and loose connection on ground lead. See ECM GROUND LOCATION table for ECM ground location.
Page 1 of 1 SYSTEM/COMPONENT TESTS - 2.6L EFI -1994 Isuzu Rodeo

get under the truck and hit the tank hard with your hand the pump may be stuck a couple good wacks might work

Try and turn the ignition over ,and over,then stop,then try and start it,if it starts,then the fuel pump is loosing it`s prime,check the fuel pressure regulator.

its run from your fuel pump,normally its built in to it

no; the pressure supplied by the fuel pump should easily purge any air.it won't hurt to hold the accelerator at a position of high idle on initial start-up.

inside fuel tank, to replace must be remove the fuel tank