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Discussion Starter · #1 ·
I am actually a Subaru owner, but my grandfather has a 1992 Isuzu pickup. I understand it to have a 2.3L 4cyl as it is carbureted.

The truck was barely running three months ago. After a mechanic replaced a blown head gasket, it got compression back, but still ran very roughly.

For his Father's day gift, I swapped out his non-existant motor mounts, which made it a tad smoother, but it still ran very rough. However, doing these repairs, I noticed a few very strange things wrong: 1) The O2 sensor was unplugged, and 2) a vacuum hose was also dangling loose :shock: . I reattached said items, and also changed the fuel filter, which was rather nasty.

The truck is still running rough, has a CEL on, and has no power at all. I am actually scared to drive it, it's so slow. It still needs new drivebelts, and there is a very disturbing sound coming from the oilpan, a very random noise like a metal piece flying around in it, which has trouble written all over it.

My question is, first, how to pull ECU codes from a 92 P'up 2.3 carb, and second, what have you guys seen that can cause something like this?

Thanks very much in advance,
subyluvr2212
 

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Have you looked under the center console? That's where it's at on a '90 Trooper. You've gotta lift up/out the plastic 'cup things' or what ever you call them.........My Trooper did not have all the symptoms you describe when it was given to me, but I just recently had a remanufactured engine put in. The cat. converter was clogged but I was still able to drive normal speed. That whole 'underpart' is being replaced now. I hear though that most cars will hardly have any speed to them when the c. converter is shot. Sounds like you or someone has some work to do if the truck is to be ressurected. They do stand abuse though so thats good.
 

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Have you looked under the center console? That's where it's at on a '90 Trooper. You've gotta lift up/out the plastic 'cup things' or what ever you call them.........My Trooper did not have all the symptoms you describe when it was given to me, but I just recently had a remanufactured engine put in. The cat. converter was clogged but I was still able to drive normal speed. That whole 'underpart' is being replaced now. I hear though that most cars will hardly have any speed to them when the c. converter is shot. Sounds like you or someone has some work to do if the truck is to be ressurected. They do stand abuse though so thats good.
 

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Hey the COmputer is Located on the kick panel right inside the Driver SIde door. I beleive there are 2 connectors that come out of the computer.. If you hook them together and turn the ignition to the on position, the Check Engine light will flash the Code out.. Then you need to get your hands on a code list, or im sure there are people on here that will know what it means..
Peace
joel
 

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Discussion Starter · #5 ·
Hey guys, the CEL actually came on only that once and never again :roll: . It's running okay now, at least after it warms up, it hates starting. It absolutely will not start without giving it gas, but I guess that's the auto-choke feature.

The truck is his work truck, he doesn't give a rat's behind about it, honestly. He just wanted me to try to make it run decent. So although I can suggest he look into a cat, I doubt he would even consider that kind of expense.

Thanks for your help,
subyluvr2212
 

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hollow out the cat and put on a weber carb if that doesnt fix the problem. If the cat was clogged and runs great after being hollowed, get a new cat installed. If it still runs crappy, get a weber carb, Isuzu carbs suck, they wear out and dont idle and flood the motor on acceloration adn get poor gas milage..all symptoms of a bad carb
good luck
 
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