Did you check the TPS range using the Diag mode on the instruments?
No, I used a multimeter neither mention using the diagnostics mode. Given the findings, surely that points to the TPS? Unless you can tell me otherwise?
I checked the resistances of the new one before fitting and before refitting the throttle bodies, just to make sure it was within spec. Graham, is the info you posted regarding diagnostics, what do the numbers refer to, and are they adjustable through the system? Where did you find that info?