48re issues - Dodge Cummins Diesel Forum
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post #1 of 5 (permalink) Old 09-26-2015, 09:32 PM Thread Starter
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48re issues

The truck in my sig i got abou 2 months ago, i just replaced the turbo and got the truck on the road. It was built by the previous owner. When you take off it shifts very quick out of first, it goes right to 3rd gear. It does not slip or flare or anything, you think it makes a clean 1-2 shift but then realize its a really long gear. If you manually shift it, the 1-2 shift is perfect, then it will have a 200 rpm flare from 2-3. Then the 3-4 is fine and lockup is good too. Its supposed to have a goerend VB. Tomorrow morning I am going to pull the pan, but looking to see if anyone knows what i should be looking for. I have no clue if it has billet servos or accumulators in the trans. I was thinking about trying a front band adjustment first. Someone mentioned to me it might have a leak in the 2nd gear servo and that 2nd gear works because holding it in manual 2 will have more pressure. Can anyone confirm? Thanks in advance


2005 ccsb - 100% injectors, 10mm cp3, s366, 6.7 mega rail
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post #2 of 5 (permalink) Old 09-26-2015, 10:20 PM
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Do a external band adjustment first. YouTube and the technical library located below, if you stroll down through the forum page.

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post #3 of 5 (permalink) Old 09-26-2015, 10:56 PM
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Go here for your factory service manual, get the ATSG manual, and the trans doc. It's all free. Good luck

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post #4 of 5 (permalink) Old 09-27-2015, 09:04 AM Thread Starter
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I had planned on doing a band adjustement today, but just seeing if anyone had any other thoughts.

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post #5 of 5 (permalink) Old 09-28-2015, 01:38 PM
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Could be high governor pressure due to the higher pressure valve body blowing through the solenoid, could be low throttle pressure from a worn out valve or low spring pressure. Getting a pressure reading from the governor port and accumulator port will give you an idea of where you're at.

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