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Daox · 03-21-2011, 11:30 AM

Is there a check engine light on in the car? If so, what is the code?

If not, I'd pull your spark plugs to see if they're black to verify rich operating conditions. If they are black, I'd probably look at replacing the upstream O2 sensor.

03-21-2011, 11:30 AM	#5 (permalink)
Daox Administrator Join Date: Dec 2007 Location: Germantown, WI Posts: 11,203 CM400E - '81 Honda CM400E 90 day: 51.49 mpg (US) Daox's Grey Prius - '04 Toyota Prius Team Toyota 90 day: 49.53 mpg (US) Daox's Insight - '00 Honda Insight 90 day: 64.33 mpg (US) Swarthy - '14 Mitsubishi Mirage DE Mitsubishi 90 day: 56.69 mpg (US) Daox's Volt - '13 Chevrolet Volt Thanks: 2,501 Thanked 2,587 Times in 1,554 Posts	Is there a check engine light on in the car? If so, what is the code? If not, I'd pull your spark plugs to see if they're black to verify rich operating conditions. If they are black, I'd probably look at replacing the upstream O2 sensor. __________________ Current project: A better alternator delete