my 2002 S60 keeps tripping the check engine light. I have had the code pulled twice. Both times it said misfire #4 cyl. I have replaced plugs and wires. Light comes on for a few days, and then goes out for a day then comes on again. Car has 178 k miles on it. New timing belt 10k miles ago. Any ideas whats tripping this light ? - Thanks Steve
my 2002 S60 keeps tripping the check engine light. on 2002 Volvo S60
by inlinerman in Hawkins, TX on July 29, 2011
ANSWER by Bret Bodas on July 31, 2011
Ignition coil, intake manifold leak, injector problem or engine mechanical problem. Driving with a misfire is going to damage your catalytic converter so I wouldn't drive it if the CEL is flashing.