1991 300sl blink codes for bad cat
Trying to find out if my catalytic converter is bad. Problem is excessive heat from under console its starting to warm up down here in Alabama. Took it to a muffler shop and they said "JUST READ YOUR CODES" it will tell you if cats are bad. After 3 days of messing around building 2 different code readers I finally got one that works however I do not want to open up more cans of worms. I am not sure how to understand the codes as it tests several different systems.
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