RPMs dropping uphill, Ford f-450
We are experiencing odd vehicle problems and were wondering if anyone has any ideas. When going uphill (~5% grade @2500 ft above sea level), the rpms slowly decline, pedals wide open throttle. Dual co...
Forum Discussion
sch911 wrote:
A 5% grade and the altitude would cause additional load. If your maxed out in high gear you will slow down. Simple physics. Period.
There's almost zero altitude effect on a forced induction engine at that low altitude. Even a NA engine is only down about 7-8% from sea level (theoretically).
And @ksss, Ford didn't detune the F450 pickups, they were 400/800, but the C&C trucks took a serious hit, like only 300/660 or something like that. Super turds.
Still OP's truck may have just run outta steam.
However, until we hear what gear, rpms and speed, it's anyone's guess.
