03... f-350 ....7.3 liter ...380,000 miles.........THE TURBO BOOSTER HAS BEEN REPLACED 60K MILES OR SO AGO. SOMETIMES ON ACCELERATION IT WILL MAKE A HIGH PITCHED NOISE. IT WILL ALSO DO IT WHEN THE CRUISE CONTROL IS SET AT AROUND 70MPH, IT WILL COME AND GO FOR ABOUT 60 SECONDS AND THEN. STOP. IT WILL MAYBE DO IT AGIAN OR MAYBE NOT. IT WILL ALSO DO IT WHEN I PULL A LOAD GOING UP A GRADE. DOESNT SEEM TO AFFECT GAS MILEAGE OR PERFORMANCE, MOSTLY LOUD AND ANNOYING.....HELP
Aug 21, 2007 at 8:32 PM