Weird idle and stalling
1997 f350 4x4 no mods except "chip" as stated by previous owner.
Truck idles low and will not recover from revving the throttle.
Changed oil, and IPR better but not perfect still stalls when letting off the throttle when warmed up.
Yesterday it loped when I started it up while it was warm, and smoothed out after blipping the throttle. Classic Bad TRS symptom.
My question is what is the relationship between the IPR and TRS? Could the low erratic idle and stalling be due to a bad TRS back feeding to the IPR?