Why is my truck using so much gas. Runs good but has suddenly become a gas guzlr on 2000 Chevrolet Silverado 1500

Warm starts difficult. have to push down on peddle to start. I replaced the throttle censer. New gas filter, new air filter. New gas pump. Really uses a lot of gas.

by in Lafayette, IN on May 24, 2013
2 answers 2 comments
ANSWER by on May 24, 2013
check for codes
COMMENT by on May 25, 2013
I did and it said the rear banks were not normal even after changing the O2 censors. I assume this means the "Y" pipe needs to be changed.
COMMENT by on May 25, 2013
the converter could be plugging up
ANSWER by on May 25, 2013
Check fuel pressure and long-term fuel trim.Post specific code #s if available.

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