Vulpes
Active Member
I know the TB cleaning had no effect, (bummer), but had another thought on air fuel mixture being off, causing RPMs to stumble at low speed/deceleration. How is your MAF? Might be gunked up after >100K mileage? At 57K, the interior of my intake manifold at 57K is coverded in oil...Pulled throttle body used CRC throttle body cleaner. Reinstalled, drive, slip, crap. Hopefully, @RamCares figures it out soon.
Like I said in my previous post, all experiencing this put your truck in tow/haul mode. It changes the downshift point, and my truck has never done it in tow/haul mode. Not ideal be neither is getting rear-ended.