Should I change spark plug wires
Check engine light on . First reading on diagnostic was o2 sensor slow
response changed both and changed spark plugs .Now code reading 303
cylinder misfire 3
Yes that sounds about right. Might just check the one on number three. It may not be seated properly.
Search Saturn S-Series Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Saturn S-Series Experts