Talk Morgan Forums Thread Like Summary - Changing throttle pedal sensor on 3.7 Roadster

As part of my troubleshooting with very intermittent severe misfiring and throttle response I'm now left with changing components in the DBW system. This following consistent P2135 fault code (Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation). This translates as fault in either throttle position sensor or throttle body. The latter has been removed and cleaned with no improvement. Current thoughts are that short term fuel trim held in volatile memory of ECU gets trashed causing this issue, currently around every 200 - 300 miles, as a three minute wait with ignition off restores engine to perfectly normal running again.

Chasing part numbers of these two components revealed that Melvin Rutter was able to obtain the throttle pedal sensor under their heritage parts scheme with 25% discount hence just over £100 delivered. The presumably ex 2011-14 Mustang 3.7 V6 part arrived as below with all plastic pedal and perfect Ford number match to OE.



I just need to use hacksaw, drill and Dremel to change it to this, noting that Morgan's steel pedal is bolted at right angles to plastic pedal stub.



Well they do say Morgan's are hand made

Excellent Richard well done. Always worth a look at with any fault code and as no doubt you will have deduced as soon as you clear the code the freeze frame data is dumped.
Regards Tony

Probably counting my chickens but 100 miles travelled over last two days since fitting new sensor. Barely perceptible change but response from foot off to light throttle when travelling through built up areas seems to have improved, these being the exact conditions present when occasional misfire occurred. Foot off I get an immediate trailing throttle slow down and similarly smooth transition with light pedal pressure to maintain 30 mph. Before it often took a few seconds to transition to full trailing throttle and on occasions this lag would allow 30mph to be maintained for several seconds foot off! I'm wondering if the old sensor potentiometers had the equivalent of scratchy volume control pots. Won't know for sure for several months free of faults but fingers crossed.

Sounds to be a good result Richard but certainly not a fault that should be occurring on our pampered cars. Well done though on the adaptation from mustang to Morgan!