1992 Isuzu Truck fuel injection

BRANDYWTR

MEMBER
1992 ISUZU TRUCK
6 CYL
4WD
MANUAL
100,000 MILES

My 1992 isuzu truck would at times start fine and at times would turn over but would not start. I left it sit idriveway 6 months + and now wont start at all. After checking a few thing s I found out im not getting voltage to my fuel injecters when I i turn motor over, so what would cause this?I have already replaced the computer. Its a TBI Fuel injection unit.

Friday, June 5th, 2009 AT 9:31 PM

3 Replies

KHLOW2008

MECHANIC
41,814 POSTS

Hi brandywtr,

Thank you for the donation.

I need the following info to get the correct diagnostic data to assist in solving this problem.

1. Engine type.
2. Vehicle model.
3. Vehicle Identiication Number.

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Saturday, June 6th, 2009 AT 12:36 AM

BRANDYWTR

MEMBER
2 POSTS

Engine type---V6 4x4 Vehicle Model---1992 Isuzu pickup truck Vehicle ID----4S1CR11ZXN4225265

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Saturday, June 6th, 2009 AT 3:00 PM

KHLOW2008

MECHANIC
41,814 POSTS

At the injector there are 2 wires, 1 for each injector that receives power supply from the ECM relay.

From ECM relay wire color is Light Green/Black and at injector it is branched into Light Green/Black and black/Blue.

Test the ECM relay and its power supply. since problem is intermittent, I would suspect the relay or its circuit to be faulty.
Item # 9 is the ECM relay.