Mar 29, 2021 #11 J Johnnygmc Newbie Joined Jun 1, 2019 Messages 3 Reaction score 0 Location Missouri I realize this is an old thread but I'm fighting the same problem. Any resolution?
Mar 30, 2021 #12 Schurkey Supporting Member Supporting Member Joined Jan 14, 2018 Messages 11,371 Reaction score 14,425 Location The Seasonally Frozen Wastelands Connect a scan tool, look at the data stream. Any chance the intake gaskets are rotted? Throttle cable frayed?
Connect a scan tool, look at the data stream. Any chance the intake gaskets are rotted? Throttle cable frayed?