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Old 09-24-2009, 11:06 PM   #2 (permalink)
Christ
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
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Ditch the flow charts, and manually test all the sensors. You can find the test specs using Google.

Have you considered the likelyhood that you're entering/leaving lean-burn mode? Or that you're stuck switching between VTEC profiles?
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