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You will want to check your your converter make sure it's working. From that reading it looks as if it has gone bad. Check to make sure you are getting good spark, you will want to purchase a spark tester (cheap). Check for vaccum leaks. If you have a check engine light you will want to have it scanned to see why it's on. Here are possible problems.
High HC during Driving Test or High Idle Test - failed catalytic converter
- vacuum leaks
- ignition system malfunction
- faulty computerized engine management system and/or oxygen sensor
- faulty air injection system
- internal engine problem