You'll want to fix the problems that are causing the irregular idle and engine hesitation before attempting to complete the drive cycle. We can say with 100% certainty that the catalyst monitor will not complete while your Toyota Camry's engine exhibits the conditions which you've described. We recommend finding out the cause of the engine idle problem (more than likely vacuum leak related) and repairing the fault. Your Camry's engine surge issue is probably related. Once the fault(s) are repaired and the computer system cleared of any pending or hard trouble codes, you may attempt to complete the drive cycle again.
posted by SmogTips Support 11-13-2017 12:14 PM