Well all seams fine now
i removed a bit more coolant and the light went off
removed the airbox and cleaned the maf (although it looked spotless)
removed the throttle body and cleaned it (very dirty)
refitted after good clean
went for a drive and all seams well
so thanks for the help guys

next job is to strip and clean the starter as every now and then it makes a terrible noise

according to the last owner the timing belt had been changed but closer inspection tells me otherwise
