Question about 1991 Isuzu Rodeo

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My 91 rodeo has tbi the injectors won't open I have replaced all fuses relays ECM injectors fuel pump still won't squirt gas

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  • wopflies Sep 06, 2010

    are the fuel lines clear? have you checked the emergency fuel cut off switch. most cars/trucks have this installed and sometimes this trips and will not allow fuel delivery

  • luckeyd Sep 06, 2010

    Fuel is making it all the way to the injectors they just will not open/turn on I know this because when I apply current to an injector file comes out and when I disconrct the fuel lines at the carborator/TBI fuel comes out

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The fuel pump sending unit may be bad u may just have to replace the fuel pump itsself check all of youre connections and make sure they are good and clean dirt and grime is one of the worst things for a fuel pump and can also caused the pump not to function properly.

Posted on Sep 07, 2010

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12900_oil_sending_unit_and_fuel_pump_circuit_80-yoo05im5qhid2i2poe1uh03c-5-0.gif this is for the fuel system, relay for the injector is nearly the same.

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There is no power getting to the injectors in my 91 isuzu rodeo V6 throttle body injection. i have replaced the ECM,fuses,relays even got new injectors still cannot get my injectors to turn on


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1993 rodeo not running no power to fuel pump


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.
62217_isuzfuse_1.jpg
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

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1 Answer

My injectors have no power going to them. i just replaced fuel pump and relay. i have fuel going to my 350 tbi but nothing coming out the injectors.it wont start and i have no power at the injector so i...


my injectors have no power ging to them. i just replaced fuel pump and relay. i have fuel going to my 350 tbi but nothing coming out the injectors. it wont start and i have no power at the injector so i dont know if its the ecm or what

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