Had auto electrician out today and his magic machine only told me what the paperclip did..22 tps..but did identify issues with icv all of which i had suspected..anyway bottom line was he suggested that i got a new icv and the plug and part of the loom that goes to the tps...found a local breaker who had a v reg cdx with the engine inplace ..so £15=00 later armed with the bits i got to work....replacement icv is now spotless and added a few drops of 3/1 oil...traced wiring back to cable tray and !!!!!found that the metal bracket that holds the ac pipe away from the dipstick area was loose and have been rubbing against the wiring and had split the outer cover..could just see the inside of the wire within so suspected it had been causing a short...duly replaced the wiring back to a sound section and fitted the replacement plug and section of wire..all in place so started up...bingo..all seemed fine ..no lights and steady tickover although was fairly high at 1000..so am hoping that it will settle down in due course..just been out agian between thunder storm to ensure not a fluke and is running fine and with a/c on steady at 650/700rpm...so looks like after spending £70 + on new tps it was no more than the wiring..moral of the story must be to check everything before buying anything..anyway lets hope it is now sorted ..but again thanks for help and advise to TB and MarkDTM for their patience with my stupid questions,but how do we learn??cheers guys