Quote Originally Posted by fire0021 View Post
hey jody you may want to check your egr settings this was a issue on my truck a while ago and cause the same condition you are refering to. i have had no air valve on my truck for 60,000 miles no issues becuase of it. I dont know if you have tried setting your air valve settings to this but you can try this as well for your air valve.

10.000000
1.000000
10.000000
1.000000
20.000000
300.000000
yeah, I've since found many guys without air valves and no issues. I assumed it was that due to the pending unclearable dtc, but I'll check the egr settings. Tough to figure out since it doesn't set any codes, other than the air valve.

Thanks.

Jody