Engine Running Fast
On Monday I made the trip from Minneapolis to Duluth Minnesota. The trip was 335 miles round trip with a little running around in Duluth. I figured out my gas mileage today and got 335 miles out of just over 21 gallons of regular fuel. This put my mileage at around 15.8.
I have the 4.0L engine. I have figured on past trips that i should get around 20 on the freeway. But on this trip it seemed different. With cruise control on, going 74 MPH the engine ran at 2,500 RPM and the engine sounded like it was under a load. Not a real heavy load, but a light load.
The only change i have made to my truck since previous long trips is that I put in a K&N air filter and some new boche platnum single plugs. From what I have read K&N air filters and better plugs are supposed to get you better mileage.
I always use the A/C when going over 55, so I know thats not whats causing it.
My check engine light was not on and the over drive was on.
Any ideas on what might be going on?
2008 Chevy Silverado 1500 5.3L 4WD
FOR SALE:2004 Ford Ranger XLT 4.0 V6 Automatic 4x4
Originally Posted by Red_Ak_Ranger
Everyone grows up stupid, just in their own special way.
Last edited by malydeen; 09-07-2007 at 12:51 AM.