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Easy NOX fix for a 1990 like on my 1986? Failed emissions. 200 1990

posted by  Bonzo on  Fri Nov 21 03:48 CST 2008
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last visit: Fri Aug 29 15:50 CST 2014
[RELATED]

A month or 2 ago I easily had my 86 240 pass emissions by plugging the vacuum line to the ECU (after failing the first time). Now my 1990 has failed emissions due to the NOX number, but I don't see any ECU behind the pass. side headlight. Any ideas for an easy fix like on my '86? Other ideas? Note: the exhaust has no leaks (made sure to also check the front pipe), the O2 sensor and cat. converter are only 3 years - 40,000 mi. old. Thanks.






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