CHEVROLET ASTRO ENGINE POOR MILEAGE

A Service Center Recently Replaced The Intake Manifold. Since Then, Mileage Has Dropped Form 20 Mpg To 11.5 Mpg. The Service Center Has...

What Will Cause Excessive Fuel Consumption From 15mpg To 7mpg, No Gas Fumes Smell Or Noticable Gas Leaks.

I Own A 1999 Chevy Astro Van Awd V6 Vortec (72k). I Recently Had Repair Work To My Fuel Gauge Since It Was Not Registering How Much Fuel Was...

I Have What Acts Like A Low Speed Miss, I Am Pretty Sure It Is Mechanical -u-joints, Rear Axle, Rear End, Etc Runs Fine After 30 Mpg, Or If...

Van Is Rated 16mpg City 20mpg Highway Im Getting Average 12.5 Mpg Which Is 60%highway 40%city.I Also Have A 1999 Astro Same Van Same Engine...