I had code p0340 pop up so I changed the CMP and both CKP's. Engine still idles rough though when I get it up to speed it seems to go away. Reading the forums I see that it is supposed to have a "relearn" procedure performed. I take it to a Chevy dealer (mistake) he tells me there is no relearn procedure for a 97. Is this true? If no relearn procedure how hard is it to time the N*'s?
Took to Cadillac dealership they had it for 3 days diagnosing.
1st they thought it was ignition module, put new one on did not work. No charge.
2nd PCM, new one on did not work. No charge.
3rd diagnosed timing issue. Remove engine and fix. $2,200.00
So this is the summary: Chevrolet dealership fixed head gaskets in January 2013 but put it back together wrong. Little lady I bought it from went to a nursing home in March of 2013, the car sent her over the edge!
Dealership in Springfield, MO. took great care of us and I am really impressed by their dedication, would highly recommend them to anyone in need. While they had it out they checked everything over and gave it a clean bill of health. 96,000 on it and the journey begins.
Thanks to all that helped out.
The issue continued at any speed just not as noticible. Apparently there is an RE and RI timing setting, I may have terminology wrong, and they were reversed. Does that make sense?
According to Cadillac dealership both exhaust cam gears installed 180 deg out. and replaced ignition coil. The only issue I still have is the service engine light is still on. Any thoughts?
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