I have a 2006 Colorado that idles rough when in traffic and temp moves up a few degress. Hooked up the scanner and code shows P0030. Changed O2 sensor and still have problem and code. Checked fuse to sensor and is ok. Only misses at idle when temp gets about 199 deg on Actron scanner. Never skips below this temp.
What could this be???
AL
What could this be???
AL