Join Date: Feb 2011
slander is offline
2000 S10 running very rough
I'm working on a 2000 Chevy S10, with the 2.2L engine. It's not my pickup, it's a friend of the families. Had to go rescue it from the side of the road this morning. It's missing horribly. Sounds like it's running (barely) on 2 cylinders. So we loaded it up on the flat bed and brought it to the shop.
Ran a scan, with 2 error codes: P0200 and P0300 - Semi-dismissed the injection circuit error, hoping the magical gnomes might fix that so I didn't have to, and cleared the codes.
Checked the typical things, spark plugs, wires, etc. Replaced them as they were well overdue. Fired it up, and the problem persisted. So got to work doing a few other tests. Checked the injection circuits with a noid light test, and there is signal. Checked compression, each cylinder is at about 145lbs dry test @ WOT. A little on the low side, but I suspect I've washed the cylinders a bit with other tests. I haven't done a wet test yet. I have verified that the spark plug wires are indeed in the correct order as well. Checked spark, and the spark is very hot.
Haven't spent a ton of time on this truck as of yet. Wanted to ask others opinions that have more experience with this engine/truck than I do before I jump to conclusions and start ripping into it without prejudice. I did notice when I pulled the plugs for the compression test that the plugs were wet. Fuel + Spark + O2 = no boom?
Are there any particular areas I should look first?
Any help would be greatly appreciated. I'm not afraid of turning a wrench or standing on my head to use a DVOM, etc. Just hoping to find a direction to start looking instead of going with the "Read, Fire, Aim" method.
EDIT: Oh yea, I did attempt at testing the resistance of the injectors. I tested #1 and #4 because they were relatively easy to get at. I was getting about 1.8ohms, which I figured can't be right. I believe I was on the wrong scale or inadvertently testing it correctly, and then got side tracked and forgot to resume testing.
Thanks guys (and gals?)!