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12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

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ok it will run and shift ok for about 15-20 minutes but then after that if i slow down or come to a stop it wont downshift and will start out in 3rd unless i downshift on the column, i can usually only get 2nd ... JOIN NOW TO REMOVE TRACER

47re wont downshift

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Old 05-02-2011, 02:04 PM
Diesel Fan


Default 47re wont downshift

ok it will run and shift ok for about 15-20 minutes but then after that if i slow down or come to a stop it wont downshift and will start out in 3rd unless i downshift on the column, i can usually only get 2nd though but i know 1st is good because its there and holds strong when it wants to shift on its own. any ideas? i really dont wanna burn up this new trany...thanks!

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oil_burner's Sig:1997 eclb 2500 4x4, nv4500, haisley street/drag DD w/1.375 shaft, afc mods and no plate, 16.5*, conta!gous 5x14s, 181s, 4k gsk, hx35/ht60 twins, 5" tbe, airdog 165, tork tek 060, o-rings\mighty diesel bolts 140#, guages, 2.5 level, 325/60 nitto's 18" ions

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Old 05-02-2011, 03:35 PM
12vcummins96's Avatar
not in my house you dont

Troy Davis

sounds like somthing wrong in the govenor or vb

12vcummins96's Sig:


96 12v with LBDP 5x.014s Smokem Specials dual fed modded afc areomotive fuel pressure regulator no plate 2095 rack plug Airdog 4ghd 63/68 .83 over a 76/85 24cm 50mm jgs external gate bd cool down timer 5k gsk 60lb springs Ati Balancer ats arc flow Arps 21 degrees Kdp killed Isspro gauges built tranny 5 inch tb to a single 6 inc tip and a 125hp shot

They go wooooooossssssssshhhhhh the the truck goes VROOOOOOOOOMMMMM then the trans goes f* this
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Old 05-13-2011, 05:45 PM
Diesel Fan



thanks im gonna order a new govoner sensor and solinoid right now, sounds like its fairly common
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Old 05-16-2011, 11:46 PM
Diesel Fan



Check the relay under the hood for tcm also. I've had that thing give me problems before especially if you have a manual lock switch.
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Old 05-17-2011, 11:27 AM
Diesel Fan



which relay is it? im assuming its in the fuse box under the hood but the covers gone on mine so i dont know whats what
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Old 05-17-2011, 11:40 AM
My Customers are #1

Luke Buchanan lukesdiesel

Have you adjusted the Throttle Valve Cable?
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Old 05-17-2011, 11:51 AM
Diesel Fan



yea i adjusted it, dont wanna go any tighter cause it already shifts real firm now. it seems to shift really early too. 1-2 at about 10, 2-3 about 25-30 and if o/d is on it hits 4th at about 35 and takes forever almost feels like a slip till 48 when it locks but not the slightest slip when its locked
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Old 05-17-2011, 06:17 PM
Diesel Fan



Looking at the fuse box from over the driver fender it's the 2nd row from the right (towards firewall), 4th slot down. Should be beside the fuse puller tool if there is one. I'd recommend buying a cover asap replacing coroded wires and connections isn't fun.

Let me ask you this, are you running a tc lockup switch?

After you shut the truck off and start back up will it go back to starting in first?

If yes for both take the relay out and replace it with a jumper wire.
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Old 05-17-2011, 06:39 PM
Diesel Fan



ok thanks ill go look at it now. and yea im gonna pick up a cover from a gasser next time im at the junk yard just so its covered up. and no i dont have a lockup switch yet, and it has to sit for a little while (few hours) before it will be right...almost like the filter is getting plugged up somethin. the new gov pressure sensor and solinoid should be here soon so ill do those plus new fluid and filter and see what happens. thinking about maybe a shift kit while im in there
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Old 05-17-2011, 07:03 PM
Diesel Fan



If your not running a lockout switch I'd guess it's somewhere in ur valvebody. Hopefully silinoid and sensor fixes it.
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