replaced wires and plugs.
plugs highly worn with only 20,000 miles .
car ran fine on the street up to 40 mph.
then jumped on interstate and car blogged down quickly.
,missing,etc.,with ses light occasionally flashing.
turned off engine and car will restart ,but ses light still on.
shady tree mechanic don,t want to use any kind of spark tester ,etc.
he says it,s 100% wires and plugs from his experience.