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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

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yesterday I was driving and then all of a sudden it was like the transmission came out of gear and the truck wouldn't move. I was messing with it today and whenever I put it in gear it doesn't go into the gear, it just ... JOIN NOW TO REMOVE TRACER

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  #1  
Old 09-14-2013, 02:30 PM
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Default in need of some transmission help

yesterday I was driving and then all of a sudden it was like the transmission came out of gear and the truck wouldn't move. I was messing with it today and whenever I put it in gear it doesn't go into the gear, it just acts as if its still in park. I checked the linkages and it seems like everything is still working correctly. any thoughts?
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  #2  
Old 09-14-2013, 03:51 PM
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Please give us details about your truck.
Fluid level?
Transfer case in neutral?
Checked your torque converter bolts?

cougar's Sig:1992 W250 auto
RIP 1991.5 W250 5 speed 1991.5-2013 fair well old friend
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  #3  
Old 09-14-2013, 04:00 PM
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fluid level is good, transfer case is in 2hi, (tried it in 4 hi and 4lo as well. haven't checked the torque converter bolts though
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  #4  
Old 09-15-2013, 10:03 AM
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I'm going to make the assumption you had your hubs locked when you tried 4wd. Something people don't always think about is the possibility they blew the rear end.
There is the possibility that the center of the flex plate broke. Not unusual.
Very remote, but possible. The coupler between the transmission and transfer case stripped the splines. I have 1 to prove it.
Main thing is with a situation like this is start at the crank shaft and work your way to the wheels. Do the stuff that can be easily checked first.
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  #5  
Old 09-15-2013, 05:14 PM
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I think its the torque converter. I took off the inspection cover and had my buddy start the truck and put it in drive, the torque converter was engaged but when I had him shut the truck off I heard the internals of the torque converter clankin around
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  #6  
Old 09-16-2013, 10:05 AM
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Overhaul time. Keep in mind that whatever came apart in the torque converter is now scattered through out the rest of the transmission. No sense doing it twice.
Options are many:
Sell the truck
Stock overhaul
Various upgrades to stock (what I did)
47RH conversion
Manual trans conversion
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  #7  
Old 09-16-2013, 07:49 PM
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ive actually already got a new torque converter and ive also got a built 47rh on the way that's why I wasn't really too upset about. I mostly just wanted to figure out what happened just to know.
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  #8  
Old 09-17-2013, 09:32 AM
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Good deal.
How you going to control lock up?
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  #9  
Old 09-17-2013, 07:31 PM
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on the 47 rh there is a port used for pressure testing pass side that you can put in a 55 psi ac switch from what I have read at 55mph it puts out about 55psi and will trigger the switch and od will turn on

---AutoMerged DoublePost---

its in the archives I am sure

deck60's Sig:99 fummins with 98 12v and nv4500 np273 manual shift
98 dodge Dakota 2wd 5 spd Cummins b3.3 the little brother to the 4bt
2000 ff250 6 spd 7.3 my daily driver right now

Last edited by deck60; 09-17-2013 at 07:31 PM.. Reason: Automerged Doublepost
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  #10  
Old 09-18-2013, 08:22 AM
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That is the governor pressure test port and it runs approx 1psi per mph depending on gearing and tire size.
A much better way to do it is to use a "delay on" relay connected to the OD circuit. That way lockup occurs shortly after OD engages instead of a fixed speed. You would also want to install an on/off switch so you can unlock for towing or extra power.
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