On my 1993 WRX i had a cel come on, had it checked using the following site under ecu reset on the help page: JollyGreenMonster.co.uk
and have found that the cel flashes slowly twice and then fast twice, so from this im assuming its 22 on that list.
Which shows knock sensor?
Any one changed one of these before, is it a hard job, and what costs would i be looking at??
Thanks in advance..