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running rough, code 321 700 1990

I have a volvo 1990 740. It just started running rough, like a miss jump, the idle is not great and the codes I get are 321,121,221. I reset all codees drove again and only 321 returned. any ideas?






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New running rough, code 321 [700][1990]
posted by  someone claiming to be fido  on Tue Jun 13 02:40 CST 2006 >


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