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Ref- Associated Connectors that tie into the (Trailer-Connected Message) Inspect for moisture and corrosion at these connectors C4099 - Back side of 4/7 Connector And C422

Those look good, and there is another possibility for this system and that is: A restricted exhaust system or clogged DPF or leaking creating backpressure disturbance which in turn is causing the MAF sensor and EGR Valve to become erratic. Just another thought of a possible But for me - the...

Out of curiosity - as another possibility I thought about, as we can see the MAF signal is erratic but have yet to 100% confirm is it truly a signal issue or is it a (bad command) issue from another sensor (Input) to the PCM You have eliminated the (EGR Valve) and have checked the TPS & APP PIDs...

The way it is spiking - leads me to think its a signal issue and or a bad ground Going on the (Assumption) that the connector is wired (Left to Right - using your pic) Blue = IAT Signal Green = 12 Volts Redish / Orange = Ground Green / Orange = MAF Signal I suspect either a bad ground or a bad...

Awesome - Did you note any evidence of water down any of the wells?

If the (Blue) Trace is the MAF - it's all over the place and should be a more stable signal. I would install the (Ford) MAF sensor and see if it becomes a more stable reading, you can also go through the wiring checks for the signal wire and or have that PID up (At Idle) and shake the wire...

I have a question. Did the original IPC display both the Gear Indications? (Drive and Sport) and are you using a - Full Lariat (IPC) As-Built or just trying to write certain addresses? I would have to dig, but I believe you may be the first to Upgrade - most downgrade for the bigger Tach You...

Sport Mode

Sport Mode

Just to confirm - When in (DRIVE) and you tap the shifter buttons - This does not pop up And In (SPORT) this does not pop up

As far as sport mode - the left display will show gear (indication) As far as temps the left display will show a engine coolant (vertical graph) and the right will show a repeater of the Outside Temp The Ranger does not have the options like the F-150 for various temperature displays - this is...

Then they need to read their own service manuals as it needs proper tooling (adaptor plate) as called out in the manual.

Are you meaning the IPC - swap ? FYI even the Lariat does not display Trans Temp - what displays are you wanting?

Another possible is sometimes the Signal Wire is also 5 volts (unplugged) the PCM provides 5 volts on the signal wire and the sensor provides the ground path The 5 Volt VREF is simply power only to the sensor. The signal return is a 5 Volt supply and the resistance to ground = MAF signal The 12...

correct the IAT should read 5 volts (with it unplugged) and the MAF should read (0 volts)

so very intermittent over the years of ownership

I am going to use a (Possible) Pinout - Not Confirmed - (Left To Right) Pin 1 (Blue) = IAT Signal Pin 2 (Green) = 12 Volt Power Supply Pin 3 (Violet / Red) = Signal Return / Ground Pin 4 (Green / Orange) = MAF Signal KOEO - Sensor Disconnected (Meter) Black Lead to (Battery Negative) and Red...

If you put the OEM back in - does it return to the original issue?

Is this the new Ford sensor or the Hella?

Yes - I think the issue is a combination of both. The outer shell (Trash Can) gets nicked or galled from the friction plates, they hang up and then burn up, the prior TSB’s only had a revised can this TSB adds a revised set of plates along with the can. I can assume some kind of material change...