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Re: Need Help with Emission Test
Posted by Larry West (more from Larry West) on Sun, 9 Jan 2000 18:27:32
In Reply to: Need Help with Emission Test, K Gland, Sun, 9 Jan 2000 18:07:28
High NOx can sometimes be attributed to two things:
1) clogged air filter - get a new one.
2) a long time idling
In NJ, before the dyno tests, they would allow a 'second chance' test
if the car failed the sniffer test. Basically, this involved revving
the motor over 3,000 for 30 seconds or so, sustained. This evens all
the motor temps to what they should be, and usually the high NOx
would drop to within allowable levels.
This *shouldn't* be a factor with the dyno test, but if you were
idling on line for a long time, it might be.
Generally my Saabs come in well below the idilng specs. Haven't taken
one to a dyno test yet.
Larry West
NJ Saab Owner's Club
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