RPM Spike on forced downshift
#1
RPM Spike on forced downshift
I have a 2005 Dodge Ram 2500 Cummins quad cab 2WD 48RE transmission. The RPM spikes from around 1700 to 2800 when I force the shift from OD to 3rd in Tow/Haul mode. This happens when I am pulling around 12,000 lbs or empty. Is this normal? A mechanic friend seems to think this could be damaging to the tranny and drivetrain.
Roy
Roy
#2
Registered User
You should be O.K. The only thing to really watch is overrevving the engine. You will drop a valve seat/valve if you do. If you are doing this to slow down, get an exhaust brake, you won't have to be shifting it to stay at speed.
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