I have a '95 960 with a rough-loping idle and is somewhat down on power during acceleration. Last week I had a 212 code so I replaced the O2 sensor, which initially smoothed out the idle as well as cleared the code. Unfortunately, on the way to work this AM, another code (221) appeared. I removed and cleaned the AMM, which cleared the code (although the loping idle is beginning to gradually reappear). The car does not show a new code as yet. Should I wait for another code to appear, or is there something else to check? Thanks, Jim
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