A little background.
Truck (See Sig) - Just under 184K on the ticker.
Been running a Hypertech Power Programmer III - Set to Stage 2.
The truck has been running very well - My daily driver/5th wheel puller. Go anywhere do anything with the truck.
Tuesday (2/28) - headed home from work. Party way home the truck suddenly has lack of power, running rough, but drivable - Nursed it home. I go into the house, eat dinner and relax a bit.
My PP3 gives me the ability to read codes. So I go out and hook it up. I got 2 DTCs:
- Waste gate steady state failure - GND short, plugged hose/port, solenoid, actuator
- Injector circuit/IDM codes detected - Injector circuit failure/IDM codes detected
I cleared the codes, programmed the truck back to stock. I fired it up, was normal, but decided to take it for a drive. All good - full power, running smooth. Go back home, reprogrammed to Stage 2. Took it for a drive - All good.
Fast forward to Thursday. Again, after work on the way home same thing happens. Get it home. Same codes, cleared, deprogrammed to stock, fired it up. Still bad, doesn't want to run worth a crap.
So....I look up that the IDM stand for Injector Driver Module and it is an amplifier to get the voltage to the right level to fire the injectors. Okay, I get that. One thing I did notice both times is that when the truck goes into this mode, the pyrometer drops to about 100* and stays there. To me...it seems that the left bank is not firing. If it were, the pyrometer would be seeing some temps there (probe is in driver's side manifold before the up pipe). I don't understand where the waste gate code comes into play.
The question then is - because of the miles on the truck, has my IDM bit the big one??? Is one failure causing the other? Which is failing first?