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If you have a problem both starting and running it's source is the likely the same problem.

I agree. It seems the problem should really be something simple. I just can't find it yet! <img src="/forums/images/graemlins/scared.gif" alt="" /> It only has the running problem until warm and then it runs well. This seems like it should be a BIG clue but I just can't seem to decipher it!
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Check the fuel pump wires. More than one of us (me included) has discovered bad connectors back at the fuel tank or corrosion in a connection point.

I have considered this (and I will check it anyway) but it seems that the problem would not go away after a few minuets of warm-up.
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Relays are cheap so switching one out to eliminate a faulty one is not a big expense.

I will see about picking one up and switch it out. Maybe another U-Pull-It run!
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you're dying within seconds of start it could be a relay problem or the alternator. There are posts that point out why most shops don't pick up an alternator problem on these engines... they're special

I did have it tested on the vehicle and they said it was fine (at an actual auto electric/alternator shop). I have heard that this could be an issue, but once again, why would it work fine once warm and not give some of the other symptoms? (idiot lights flickering/dim, etc.)
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All the electrical depends on good grounds and there's a bunch of them; on the block, on the valve cover, on the intake manifold. It's something simple.

I will check this out and see what I can find. Electrical is not my strong point! <img src="/forums/images/graemlins/confused.gif" alt="" />
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It's something simple. It's a process of elimination.

I agree completely! I am just trying to rule one thing out at a time. Keep the ideas coming and I will try and tinker when I can with what limited knowledge I have! <img src="/forums/images/graemlins/smile.gif" alt="" />
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And another thing: if the thermal air by-pass valve on top of your thermostat body is opening you are running too hot.

It does not appear to be opening. I installed a new radiator about six/eight months ago and it has run at about one third on the gauge every since. This is even when towing. New T-Stat also.


You wouldn?t worry what people thought about you if you realized how little they did!
1988 Isuzu Trooper Limited, Bone Stock, 2.6L, 5 speed manual trany.
2001 Isuzu Trooper Limited, Bone Stock, 3.5L, Automatic.