Having problems with your 2004 Chevrolet Silverado 1500 Crew Cab ?

Poor fuel econemy

\015 Truck has a 5.3l. it has no codes and i have replaced pre-cat o2 sensors. it shows no obvious problems on live data obd2. i used to get 17mpg like clock work and now i can't get any better than 13.5 no matter how i drive it\015 Posted / edited by AnonymousUser on : 19-02-2018

Answers :

Alas!!! The public is awakening!!! Since adding ethanol to our fuel, most vehicles are getting less mileage. In order to produce the same btu's of power, you need to burn nearly twice the amount of alcohol!!!
(an engine is essentially a heat pump) In racemobiles you can increase the timing and richen up the fuel mixture to compensate... On computer controlled vehicles you cannot.
Repair Help & Product Troubleshooting for 2004 Chevrolet Silverado 1500 Crew Cab

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