OK just an update but hopefully a useful one for others with this problem.
We waited for a nice dry day and repeated the
clean leaving the open ends of the connectors in the sun for a few hours, replaced and all was well for 24 hrs then the fault re-occurred.
We have now removed and cleaned the
(it was just a bit black inside, no 'bits' to speak of) and the car if anything is now worse!
Managed to get into our local garage who had the car for 2 days and couldn't get the fault to re-occur but cleared the fault and all was well for 3 days before backcame the fault (they said that would probably happen) took the car back to them today with the fault warning showing and the car in 'limp home' and they put it straight onto their diagnostic machine, their experienced mechanic is 98% sure that this is an
fault as he was able to send the correct signal to the throttle and get the throttle to respond correctly, as we were watching ther display he was telling us that the 2 signals did not correspond (was above my head by now!) having switched off and cleared the fault we could see the correct 'box' shaped signal.
Options at the moment are
from Renault £700 odd quid
send off have tested and repaired my
about £180 ish
still not good but not the £700 that Renault want!
Watch this space.