Hi Its Marty again. You help me out with the bad TB connector on 5.4l. Its been running as good as ever until the other day I was idling at the drive up and felt it miss and then badly missed then i got it home. next morning it started up and ran good again for about the time it took it to get to operating temp. Then missed no power and ran rough. No engine check light. Unlikely to be connected to TB connector? Its brand new and i did a proper job installing the new one. Plan is to switch to the original TB in the morning and see if that has anything to do with it. It does run normal when its cold. I did run a scan reader. B1791 Control unit
BCM autolamp sensor input circuit open? Sounds like nothing to do with the problem. Any ideas? thank. Marty