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Discussion Starter #1
I have a 03 ram with automatic transmission, it has trouble shifting out of 1st gear. It stays in 1st at about 3300 rpms for a while (maybe 6-8 seconds) then finally shifts into 2nd. I am new to this forum and this is my first real truck, just upgraded from turbo imports. So I know next to nothing about diesels. I did a search on here and found someone had the same problem i am having (more or less) and they changed something called a valve body. Does anyone know if this will fix my problem, or have any advice on what the problem may be? Also, just curious, but what exactly does a valve body do? Thanks.
 

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I bet it is the gov. pressure sensor and or transducer.
Check the codes.
 

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The valve body is the hydraulic control center of the transmission. It is what actually performs the shifts and regulates pressures. So far, I think J-FOX is onto something there. Sounds like it could be a Gov Pressure solenoid and transducer. Replace them both. Everyone I have told to do this that has only done one, has done both.

You will have to remove the Valve Body to perform this. Its easy to find, its the only electronic parts inside the transmission.
 

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Discussion Starter #4
Thanks for the input dieselnut and j-fox. This problem has really started to get on my nerves cause I have only had the truck maybe 2 months. I will look into changing those two parts.
 

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Discussion Starter #5
Just outa curiosity, are those two parts apart of the valve body, someone told me they were?
 

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Discussion Starter #6
Checked the codes, it says done in the odometer window, then shows a bunch of dashes in the window. All i did was cycle the key 3 times, is there anything else i need to do in order to check the codes?
 

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you don't need to remove the valve body, just the pan. 13mm for the pan, and 25 torx and 11mm socket for the selonoid and transducer. piece of cake.
 

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i just had this happen to a company truck with the same problems you have the valve body had to be replaced works perfect now. it was under warrenty though.
 

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Discussion Starter #9
If it was the gov pressure solenoid and transducer, would it show any codes on the dash?
 

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Discussion Starter #10
Finally got around to changing the governor pressure solenoid and transducer, tried a few other fixes first. None worked until today, it seems to drive and shift fine now. Hopefully it lasts.
 

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I had my trany rebuilt at beginning of the year. I had same problem took it back to shop all they had to do is adjust the throttle cable.
 

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Discussion Starter #12
It has started to act up again, same problems as before. Started up about a week after I changed the 2 parts. I thought I could ignore it until I had the money to get it fixed, it never got worse. I adjusted the bands and it seemed to move the shifting problem. It only does it now when I barely hit the throttle, like in rush hour traffic. I step on it and it runs fine. I am happy it is almost fixed, but it is also driving me crazy as I have fought this problem since I bought the truck in April. Does anyone have any advice? I have changed the governor pressure solenoid and transducer, adjusted the bands, and I think the throttle cable was replaced. I am running out of options and don't want to go broke buying a new transmission, or gettin this one rebuilt. Only makes me wonder what the previous owner did to it.
 

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Mine does that if I dont stop completely going from reverse to drive. The go pedal gets a little stiff. So, I can tell if its going to do it right after I put it in drive and touch the pedal. To fix just stop and put in park then back in drive.:popcorn:
 

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Try to replace the transmission speed sensor near the back of the tranny. Part is about $30. Good luck.
 

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mine had that problem. seemed to be when I did'nt stop completely when shifting from reverse to drive. I could feel it in the go pedal the moment I put my foot on it. To fix I just stop completely put it in park then back in drive, problem solved. Don't have a clue what this is all about.
 

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Discussion Starter #16
Where on the transmission is the transmission speed sensor located? What all is involved in changing it? Right now I'm about at a point where I will try anything. Thanks for all the help guys.
 

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Discussion Starter #17
Just changed the transmission speed sensor, by far the easiest part I have changed on my truck. The old one was covered with little metal shavings. Hope this fixes my problem. Will know more in a few days.
 
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