My truck is having serious gas mileage problems and it has been happening ever since i got the truck. it has no check engine light and the obd is responding. I changed the plugs, oil, air filter, and had the injectors cleaned. The gas mileage problem only occurs if i go 50 mph or under, therefore i get much better gas mileage going over 60. The throttle body is responding properly and is not sticking and the truck does not surge or over rev. I was thinking about replacing the EGR valve, EGR vacuum solenoid, canister vent valve, and vapor canister, but would like to know if that is even going to help or that there might be a different problem going on.
Jan 12, 2020 at 12:15 PM
