48RE transmission Shift Problem?

[dspickes]

While towing my 5th wheel I had the following:



Combined weight: approx 21000

Accelerating uphill

Accelerator at or near full throttle

Overdrive switch in "OD/Off"



-The vehicle accelerates normally to approx 41 mph/3100 rpm

-transmission then either shifts to a higher gear or locks out the TC (not sure which)

-RPM drops to approx 2600 rpm

-transmission then either downshifts or unlocks the TC

-RPM goes to 3100-3200 rpm

-It then continues to cycle between gears with rpm down to 2600, up to 3100 over and over until I let up on the accelerator.



It seems to me like the it accelerates normally, gets to near the upper rpm limit, upshifts and the computer says "no, I need to go to a lower gear", jumps to a lower gear and says, "I'm at the rpm limit and need to shift to a higher gear. " It gets stuck in this loop.



The question is: Is this normal for this transmission? Should I have the transmission checked out at my friendly Dodge dealer?



Thanks,

Doug

 

[vagabond]

My 600 did that and it was the govener cutting in at approx. 3200rpm the max on mine. I am not sure about your 2003 but it is a thought Tommie

 

[dspickes]

Tommie,



Mine is also governed at 3200. So, was there a fix or was this considered normal operation?



Doug

 

[vagabond]

It is normal and ment to save the engine. I did not have gauges at the time but sure would have liked to know what my egt would have read. Tommie