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Old 08-22-2015, 10:02 AM   #30 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
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Quote:
Originally Posted by H-Man View Post
I smogged the car today. Failed with 120 HC, 15% CO2, .2% CO, 670 NOX, and 0% oxygen. Still rich or lazy cat?
Unburned fuel has decreased, unburned oxygen is decreased, more carbon dioxide (more fuel being burned), less carbon (soot), nox is still high (this is actually good, it means the combustion temperature is nice and hot).

I would do a once over on the spark plug gap, make sure the coolant temp sensor is ineed working properly. Replace the cat.

Or... http://ecomodder.com/forum/showthrea...-do-23483.html
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Last edited by ksa8907; 08-22-2015 at 10:36 AM..
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