info as promised...

thanks fella

hi guys a little more info on this (sorry to bump this to the top) hopefully someone may recognise the fault, been in today had the codes scanned by a land rover specialist, he was reading throttle data and it was all over the place, sometimes 100% perfect others not, he's as baffled as i am now as to why it's doing it, anyway he cleared the codes and cleared the self learn on the ecu, now when i start the car it hunts between 1000-1250rpm with no throttle response from the pedal, i have to clear codes to start car then it ticks over at 1000 rpm but it is not learning throttle position as soon as i turn off ignition it resets and have to clear codes etc again, i have tried the throttle learn as the lr indy did and it makes no differentce, short of re wiring throttle body i don't know what to try next, the indy is asking a guy he knows who knows all about the bmw systems to see if he has any idea.

by crikey i think i've found it, pins 4 & 6 on the throttle body wiring plug both showing 3.5 volts when disconnected from tb, i think these are pin 4 +v in and pin 6 signal back to the ecu, now heres where it gets interesting all previous tests have been when cold, today i tested the engine hot and i have .5ohm continuity between both pins 4 & 6 and the +12v side of the thermostat wiring, think i may need to do a tempory fix tomorrow to get me through the weekend

end result of this after further checks this morning the engine ecu has gone faulty, and is causing more problems when hot, i've double checked by pluging in another ecu (but not trying to start the car obviously) and no engine failsafe mode pops up! just need to get new one security programmed on thursday now.