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Failed Aircare (emission testing) any ideas on what could be wrong? 700

posted by  someone claiming to be Reid on  Mon Sep 23 06:20 CST 2002 [RELATED]

I had the same problem in Texas a couple of months ago although my hydrocarbons were in spec, the NOX was probably close to yours. I replaced the O2 sensor ($115) and it had ery little effect. At first I didn't believe it was the catalytic converter because it was only a couple of years old. To make a long story short after I replaced the cat my NOX readings were about 1/2 of the limit.

Hope this helps

1990 740 220k






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New Failed Aircare (emission testing) any ideas on what could be wrong? [700]
posted by  Turbo 745  on Mon Sep 23 04:38 CST 2002 >


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