Low Speed Surge

[GKehl]

Low Speed Surge '03 Dodge

I have a 2003 dodge ¾ ton 4x4 HO with 48RE trans running 5" exhaust and an Edge EZ at setting position 4. She has run like a champ! Until about two weeks ago I noticed a surge at low speeds 10-20 mph it almost feels like the trans is slipping or shifting form 1st to 2nd and the back to 1st rapidly. I have also noticed that when cold it feels like something is holding the transmission back, it has a heavy lag and then it will engage.

I just replaced the fuel filter and cleaned the air filter and no change. I have removed the Edge EZ and the problem is still present just not as aggressive. The dealer says the trans is fine.



Any help or suggestions would be appreciated.

 

[Rosco]

Gkehl, Welcome to the TDR.



I too have an occasional erratic 1-2 shift and have found that it occurs mostly under light acceleration. As the truck makes the 1-2 up-shift it seems like halfway through the shift it returns to 1st gear for a bit then up-shifts back to 2nd, almost like the truck was not sure if it was ready to make the shift yet. As I recall my 03's did the same thing so I am not overly alarmed. As a solution I just accelerate quicker and the shifts are fine.



Also, I am unsure if this is the same condition that your describing but I have felt a loss in power recently. It's like I am dragging an anchor around. I attribute this to the winter blend fuel that is now at the pumps in my area. Again, my 03's did the same thing.