Question about 1991 Isuzu Rodeo

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I'm not getting fuel to the TBI?

I'm not getting fuel to the TBI on my 1991 Rodeo 3.1 V6. Where is the fuel relay located?

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Should be under hood on or near fire wall, under plastic cover 

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

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Hi I have a 1991 Isuzu rodeo 3.1L V6 and can't figure out or find the right fireing order can I help please


For the 1991 Isuzu Rodeo with the 3.1L V6:

Firing Order:
1-2-3-4-5-6
Cylinders:
....(back).....'.5...........6.'
'.3...........4.'
'.1...........2.'
....(front)
Distributor:
.....(back)
.................(+)-screw
..........4
..3
...................5
2
.................6
.........1
(+)-screw
.....(front)
Rotation: Clockwise

Jan 12, 2017 | Isuzu Cars & Trucks

1 Answer

Isuzu 1991 rodeo wont start


ok look in the fuse box, if possible, exchange a fuse equal to the fuse relay, if it starts the problem is solved, if not, that`s not the problem, and additional diagnostics will be required, also, add about 2 or 3 additional gallons of gas to the tank, then for total fuel diagnostics only, get some starter fluid, spray a couple of good size squirts in the throat, if it start, bad fuel pump

Apr 28, 2014 | 1991 Isuzu Rodeo

1 Answer

1992 4.3 v6 tbi s10 starting problem. Won't squirt


Are the injectors getting power and a ground signal from the computer ?

Sep 06, 2013 | Cars & Trucks

1 Answer

Replaced fuelpump filter fuseablelink for v6 91 rodeo still no fuel what do i need to check next


you have a bad fuel pressure regulator it is located on the fuel rail

Nov 03, 2012 | 1991 Isuzu Trooper

1 Answer

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


Hi there, Joel here 20 year master mechanic. For the faulting to the injector pulse and power, the control mod in the distributor controls fuel and spark. You're going to have to replace the control mod. I believe AutoZone carries these at 26.99 p/n DR126. Hope this helps.

Oct 03, 2010 | 1991 Isuzu Rodeo

1 Answer

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


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.

Sep 06, 2010 | 1991 Isuzu Rodeo

2 Answers

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

Mar 28, 2010 | 1993 Isuzu Rodeo

2 Answers

Adjusting fuel pump


If you have the 91 3.1 V6 Rodeo you can't adjust the fuel pump or fuel pressure. The only thing you can really do is to get a throttle body rebuild kit that will have a new diaphragm for the fuel pressure regulator. If you want to adjust it, you'll have to get an aftermarket regulator and install on the return line (the smaller line) and remove the spring out of the regulator on the throttle body. If you feel the fuel pressure is too low, then you might need to change the pump. Its located in the fuel tank, only takes 1 or 2 hours to do.

Jul 12, 2009 | 1991 Isuzu Rodeo

1 Answer

Where is the fuel pump relay for a 1991 gmc jimmy?


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Relay - Fuel Pump 1991 GMC Truck S15 Jimmy 2WD 4.3L TBI 6cyl The Relay - Fuel Pump Under hood, driver side, upper firewall, mounted in relay block

Jul 02, 2009 | 1991 GMC S-15 Jimmy

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