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Failed MA emission test: High NOx

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#1

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01-21-2006, 02:20 PM

Bruno_300TE Bruno_300TE is offline

Bruno_300TE is offline

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Join Date: Dec 2003

Location: Fribourg, Switzerland

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Quote:

Originally Posted by Duke2.6

One thing that is not clear is if you adjusted your duty cycle before or after you replaced the possibly leaky EGR valve.

Duke

Well, both. And the fact that I had to readjust duty cycle after the EGR valve replacement indicates there may indeed have been a vacuum leak. Also, I measured vacuum at the intake manifold after EGR valve replacement. It was 15 mmHg at idle and 20 mmHg at 2000 RPM. This would be in agreement with figures posted elsewhere on the forum (I believe by you, Duke).
Thanks again, Bruno

Last edited by Bruno_300TE; 01-21-2006 at 02:28 PM.

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#2

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01-22-2006, 02:11 AM

Duke2.6

Duke2.6 is offline

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It's inches Hg not mm, but IIRC 15-16" at idle is about what my car shows.

Duke

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