Question about 1991 Isuzu Rodeo

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991 Isuzu 2.6l petrol runninf problem!

I have a 1991 Holden Rodeo, (isuzu engine, 2.6l petrol) It suddenly stalled on me while it was idling the other day. i was pretty sure it was a fuel problem so i replaced the fuel filter. this did not work, i brought a new fuel pump and now it starts up SOMETIMES and runs for various lengths of time before it cuts out. any ideas?

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  • upshitcreek Jan 02, 2009

    thanks heaps mate. ill try it and get back to you.

  • bronson martin
    bronson martin Nov 29, 2016

    hi my name is bron and i had my 2.6L jackaroo for 7 month and now she dont start on fuel luckily i have gas hook to it but i solved my problem by taking the fuel line hose to the filter off then turn the key on with out starting the engine but my fuel pump dont make any noise or pump fuel out i check the relay and thats not the problem so my concern is that it the pump cant wait to go home and fix that dirty tank up

  • _-__-___-_
    _-__-___-_ Nov 29, 2016

    hello Mr, Martin
    why not start your own post?
    and tell country, this is a usa forum
    and no books on cars sold down under.
    you have very bad EFI problems.
    get it serviced,
    we can not post the 1000 page book here
    on how to EFI diagnosis nor 50 years experience, on Holdens we dont have.
    why not join forum in your country
    for 10x faster responses and 100x more accurate. for sure.

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I realise you have probably solved this problem by now so sorry for the late news mate . Had a similar prob and it turned out to be an alternator malfunction . I replace the brushes and off she went . These things send voltage from the alt . to a fuel pump relay or whatever so the pump wont run if the eng isn't (or the alt isn't outputting any voltage.) . Hope you already had it sorted . But I hope this helps if not . Cheers Simon .

Posted on Aug 15, 2009

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I have a 1990 isuzu p/up 2.6. I swaped out my original alternator with a high amp output alternator and is externally regulated. My problem is that my original connector that i plug to the orignal alternator is not use. How do i wire it into the charge indicator wire and what is the color code?

Posted on Jun 24, 2009

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I own a 1995 Rodeo with the 2.6L 4-Cylinder. I recently had a similar issue as this. Sometimes it would not start. Replace the fuel filter, twice, replaced the fuel pump, twice. Changed the plugs, new wires, new fuel pressure regulator. Still the problem persisted.

So I started tracing out the wiring. I pulled the fuel pump power connector (you can get to it from the passenger side rear wheel area), put 12vdc to the pump and could hear it run. Checked the other side of the plug and found 12vdc there when I tried to start the vehicle. Put the plug back together, it would not start.

Turned out to be the connector itself was faulty, it was not making a good connection. So it might be a good idea to start there. Sometimes I could pull the connector apart and put it back together and it would start up and run fine. I had to replace my connector eventually as it gradually got worse over time.

Posted on Jan 01, 2009

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Good Day
Vale clearance cold
intake .006 in (.15 mm)
exhaust .010 in (.25 mm)

Timing
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3. If adjustment is required, loosen distributor hold down bolt and turn until timing is within specification. Tighten distributor hold down bolt and recheck timing. adjust idle speed as required.

hope this helps

Cheers

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