Rum, rum, rum@ 3,500 RPM
My E450 with V10 has a slight surging of RPMs at 3,500 and climbiing hills. Normal or something out of balance? New 8 months old 2015 chassis.
Forum Discussion
Are you holding the gas pedal steady, or adjusting it somewhat as you drive? I find with my (much older) 4R100 that under these sorts of conditions too quick of an increase in throttle will seemingly cause the torque converter to unlock for a couple of seconds (and hence the RPM rises slightly), even though the transmission has intention of shifting. Perhaps the same applies to the new transmissions, though I would have hoped that bit of programming might have been improved in the meantime.
