Failed CA Smog on NOx -
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post #1 of 2 Old 03-28-2002, 12:02 PM Thread Starter
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Post Failed CA Smog on NOx

88 Limited XJ 4.0 Auto.. failed only the NO test badly at about 1400 each should be 1200 at 15 mph and 800 at 25.. The CO and HC where very good way below mins ... So I think the cat and the engine is good just something in the NOx system.. any help out there ?



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post #2 of 2 Old 03-29-2002, 08:08 AM
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I just had my XJ inspected a few weeks ago. The guy at the shop said it passed with flying colors. He also said cherokees are very hard to pass because the EGR valve is junk. I would try that first, it should be an easy fix.

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