Question about 1991 Chevrolet S-10
2.2 engine,, no reading high
Scanned the ECU and confirm us what fault code is stored there; sound like a sensor need to be replaced.
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Posted on Feb 24, 2012
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Posted on Jan 02, 2017
nox is from running lean..... its realy high temps that cause this.......... replace the o2 sensors this should cure that any more help let me know
Posted on Oct 24, 2008
You have to take the upper Plenum off. There are hard plastic lines there that are common failure items. They get brittle and crack, they also can leak fuel into you oil. Its commonly known as the spider assy. It can only be bought as an assy. It is a fairly envolved job. Difficulty level 4 of 5.
Posted on Oct 04, 2009
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