We have classified the 52 complaints from 1999 Ford F-150 about ENGINE AND ENGINE COOLING into the following categories.
When driving at any speed their is a knocking noise coming from vehicle. it sounds like metal rubbing against metal. dealer is award of the problem. *ak
Poor gas mileage; has averaged 15.4 miles per gallon, and ford advertises 16 city to 20 highway. other f150 owners report poor gas mileage. is this false advertising because i would never have purchased truck getting 15.4 miles per gallon when i travel mostly highway miles. i have a loud rattle noise under truck and the catalytic converters and muffler have all been replaced! also, vibration via gas pedal from engine (?) noted between 45 and 55 mph. *ak