A FRIEND HAS A 99 SUPERDUTY, WITH THE PWR STROKE DIESEL, SAYS IT BOGGS DOWN AND HAS NO POWER WHEN HE HITS 2300 RPM WHILE DRIVING. SAYS IT ACTS LIKE A REV LIMIT SITUATION. CONDITION PRESENT HOT OR COLD. TRUCK HAS ONLY 40K ON IT, NOT A DIESEL FAN , NOR A FORD ON... Login to read more.