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221 and 321 codes 900 1994

posted by  truep on  Mon Jun 12 03:53 CST 2006
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last visit: Sun Mar 11 09:12 CST 2007
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These two codes keep comming up after about 50 miles after reset. The O2 sensor and amm have been recently replaced. I cant find any vacuum leaks and when I tested the o2 sensor all looks good. (.4-.7 in normal , .9 when I pull the (and plug the FPR vacuum line) and .1 when In introduce a vacuum leak.
Help!






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New 221 and 321 codes [900][1994]
posted by  truep  on Mon Jun 12 03:53 CST 2006 >


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