Famous Chevy S10 Check Engine Light Flashing References. A flashing cel usually means random/multiple cylinder misfire. I'm assuming the converter was replaced for a reason other than the flashing cel so it may not have.
(links below)is your car idling rough or experiencing loss of power? Repairpal will help you figure out whether it's your emissions system, sensor, catalytic converter, or something else. If you have over 100,000 miles on the vehicle you're due for a tune up.
