[BillAmigo99]

1)Check engine light comes on from time to time. At first, I thought it was the EGR, it sent out a code for that, so that's been replaced. A month or two later, it starts back. New gas cap, went away for a while. It's back. I'm thinking maybe it's a misfire? Only seems to come on when the engine is wound out, and it goes away after a few starts (10-20), which sounds like it is a one time trip that doesn't continue, so it turns off. Any ideas? Could it be O2 sensors, or they're just setting it off for too much fuel getting through? I don't know. It runs fine though.

2)Is there any new development in the mysterious disappearing oil deal with the 3.2L? I know Isuzu says 1 qt every 1000 miles is okay with them, but it's my biggest reason I sometimes want to get rid of the Amigo. No smoke, no leaks.

I don't think the 2 are related, BTW.

 

[JTK]

1) Bill, what trouble code are you getting now? any operational issues?
2) Per an isuzu tech (Keith) on the suv.com site, the oil consumption on earlier DOHC 3.2/3.5 (1998-1999, maybe early 2000) is due to the lack of drainback holes on the piston oil rings. Old design only had 4, new design has 10+. Oil cant drain out properly on the "old" design, gets trapped & burns off in the cylinder. G/luck
Joel

 

[nsn89amigo]

I would replace the o2. if its got crust on the louvred sensor area, that is probably the culprit.