mdelorie Posted July 28, 2003 Report Posted July 28, 2003 poking around my hood today, found a spark wire unplugged (or at least loose) off the DIC for cylinder 2. plugged it back in, and the car "seemed" smoother. Not that I had noticed a problem before. Would I have noticed (performance wise) if I was a cylinder short? Doesn't the ECM warn about that? if the spark isn't being delivered? Quote
Redfox340 Posted July 28, 2003 Report Posted July 28, 2003 No, the ECM does not directly check spark inside the cylinder. But, since you had a "dead" cylinder, the Oxygen sensor most likely picked up the unburned A/F mixture. That means the ECM could advance the timing or lean out the A/F mixture. I would take out and check all plugs for burns and perhaps replace your O2 since it could begin to foul out. Just a thought, glad you found such a thing! - Erik Quote
Robby1870 Posted July 28, 2003 Report Posted July 28, 2003 It was prolly just loose, and I bet the spark was arcing between the coil and the wire. So, you still had 6 cylinders, just one was not performaning as well as it should. So, putting it back on tight, made all 6 burn properly, smoothing out your idle Robby Quote
rglguy Posted July 28, 2003 Report Posted July 28, 2003 i fuckin had that prob, more than once, with non delco plugs, havent hada prob since i replace the carpy ngks with my delcos:) Quote
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