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Old 06-05-2013, 12:39 PM
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Rogan Rogan is offline
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Default 47RE: My never-ending saga of troubleshooting

So, I thought I'd bring this issue over here and see what you guys think.. It's been almost a year that I've been tinkering, fixing, replacing, etc., crap on this to try and get my 47RE to what it's supposed to be.. So here's the long read..

Middle of 2012, I picked up this 3500 DRW 12V auto 4x4. It had a little shifting problems, but wasn't hateful. It would wind up 1st gear then BAM! into 2nd, then be fine. It would only do this the first 1-2 change of the driving session. Once the engine was turned off/on, it would "reset" this process.

so I fixed that with an Output Shaft Speed Sensor (OSS) for $20. Then all of a sudden, it started going into limp mode.

Then I found out the truck was ORIGINALLY a 5 speed, and that a few owners back, swapped a Jasper auto from another truck to this one, made no changes to PCM configs, etc., and sold it. So the guy I got it from killed the trans in short order, and had it "built" by a guy in Maryland (more on this in a second)..
So guy #2 has it built with (as told to me) triple disc Suncoast, Suncoast HD VB, red clutches, kevlar bands, new auto PCM, fixed wiring harness to accomodate the automatic, etc.. Was built in 2/2012 and 3yr warranty, transferable. Okay, we'll see.

Back to the limp mode.. I tracked codes to be a Gov. Pressure Solenoid and Pressure Sensor. Took the truck to a local transmission place and paid $100 diagnostics. He ultimately told me he couldn't get into the PCM because the VIN of the truck didn't match the PCM .. What?
Bought the Borg Warner HD solenoid and sensor, a drain plug, gasket, and 8qts of fluid to do the job. Completed that, and it shifted much better. But OD was still amiss.. It would shift into OD immediately after the 2-3 shift. Then it would 'slip' through OD until the speed was up to around 40mph, then it felt normal.

Apparently, the trans builder was Eastern Performance Diesel.. That answers a lot of questions now, huh?

I noticed the OD button wasn't wired up, or into the PCM, so I did that. I also (at the same time) wired up a TCC lockup switch, pulled the Trans Control Relay, and placed a jumper between pins 30 and 87. This made the truck much easier to tow with, and felt so much easier on the transmission.

After some more wiring fixes, like actually adding the OSS wires from the sensor into the PCM (they, too, were missing.) I got tired of dicking around with a hodge-podged harness, so I bought a '96 auto PCM and harness off of a fellow CompD member. I installed that, so the harness was now 99% unmolested. 99% because I had to change 2 plugs from my old harness to the '96 harness. Wire colors and all were same, just the connectors were a little different.

Adjusted the tv cable, and away I went.. Now, I realized that the TCC lockup switch didn't work quite as well as it used to.. I.E., if the TCC switch is on, and I forgot to turn it off before coming to a stop, it no longer bogged the truck.. Just acted like a normal auto trans.

Pulled the jumper, replaced the Trans Ctrl Relay, and it immediately goes into Limp mode as soon as a gear is selected. Bought a new relay, also swapped with horn relay; no change, same issue. Several codes, too (don't have them handy at the moment.) Pull relay back out, place jumper, clear codes, and they stay gone.. Re-install relay and they come back with Limp mode.

Made a TPS pot (5k linear), and tried that, in place of the TPS. Worked awesome-.. for a little while. 40mi into a 50 mile trip, it just decided to drop out of OD @ 65mph.. Pulled over, checked connections, all seemed good. Started truck, and the OD was working again.
Return trip home, it worked great. Then, about 40-45minutes into the trip, it dropped out again. After 3rd time, I unplugged the pot, and reconnected the TPS and went back to manual shifting the rest of the way home.

Towing even as little as 3-5000lb, the trans really seems to labor with anything above about 2% grade. Even slow, pulling my 20ft trailer up a 4% grade driveway, 1st gear, it really seems to struggle, transmission-wise.. Temps will climb from about 150F to 190-200F in under a minute..

I don't have a DRB3, nor access to one. I'd really just love to take this truck back to a 5speed, but that's not financially feasible. I can't keep wasting time on trying to figure out what's wrong, either, but I have to..


I read online about adding a 150 ohm resister inline to the Gov. Press. Solenoid wire (C2/p1), and a 1000K ohm resistor to the Trans Temp wire (C2/p30).
This induced new issues of no OD at all, and a Trans Temp warning light on the dash.
This morning, I bypassed the C2/p30 resistor and regained my OD functionality and the Trans Temp light no longer illuminates erroneously.


Any input is greatly appreciated.
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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Old 06-05-2013, 02:00 PM
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MnTom MnTom is offline
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This has been a real tough one to figure out. Hopefully SOMEONE here can assist you, Rick.
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Old 06-08-2013, 08:53 PM
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I can't believe nobody has any ideas.
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1996 RAM "Custom Ground" 100 plate 3/4 forward, 300 injectors, 16.5 timing, Goerends Auto = 365HP, 833TQ Third Gen Rims, Aluminum Headache Rack
Duct Tape can't fix stupid, BUT it can muffle the sound
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Old 06-09-2013, 08:09 PM
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Rogan Rogan is offline
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Its common across forums. Not many people understand the 47re enough to contribute. No worries.

Sent from my SPH-L710 using Tapatalk 2
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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Old 06-09-2013, 08:59 PM
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MnTom MnTom is offline
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Rogan, try calling this place and ask to talk to a tech named Tim Holt. He will give you straight answers.
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1996 RAM "Custom Ground" 100 plate 3/4 forward, 300 injectors, 16.5 timing, Goerends Auto = 365HP, 833TQ Third Gen Rims, Aluminum Headache Rack
Duct Tape can't fix stupid, BUT it can muffle the sound
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  #6  
Old 06-10-2013, 07:55 PM
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Rogan Rogan is offline
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Quote:
Originally Posted by MnTom View Post
Rogan, try calling this place and ask to talk to a tech named Tim Holt. He will give you straight answers.
Thank you sir.

Sent from my SPH-L710 using Tapatalk 2
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SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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  #7  
Old 08-15-2013, 11:31 AM
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Rogan Rogan is offline
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Updates (for those that haven't seen them on other forums..)

I got a couple gauges (0-100, 0-300) and a couple 1/8" NPT fitting, and tested the pressures per the chart above. I never heard back from Suncoast yet (go figure) on their specs.

So here they are:

Rear Servo:
Reverse - Idle/WOT = 130psi/300+psi

Front Servo:
Reverse - Idle/WOT = 0psi/0psi

Accumulator:
L - Idle/WOT = 80-90psi/145psi
2 - Idle/WOT = 95psi/142psi
1st - Idle/WOT = 100psi/140psi
2nd - Idle/WOT = 100psi/145psi
3rd - Idle/WOT = 90psi/142psi
4th - Idle/WOT = 92psi/170psi

OD Clutch:
4th - Idle/WOT = 90-100psi/150-155psi

Governor:
This one was weird, and not anywhere like I was expecting. I understood it to be 1psi per mph (ex. 20mph = 20psi, 30mph = 30psi, etc.) It was NOTHING like that, nor was it linear..
Best I can tell is this:
10mph = 12psi
20mph = 40psi
25mph = 55-60psi
30mph = 70psi
When it went into 4th + Lockup, it jumped +30psi, and pegged my 100psi gauge..

--UPDATE--
Got a call back from Ernie @ Suncoast Converters. He wants me to drop the VB and check to ensure it is a SC unit. If so, he's gonna send me some springs and instructions to do a couple mods.

So I took a couple videos of the trans issues, and forwarded them to Ernie @ Suncoast. He reviewed them, but his pc has no sound, so he couldn't hear it.

He called me last evening and wants me to drop the VB out of the trans and verify it is a Suncoast unit. If it is, he's going to send me some springs and some instructions on what he wants me to mod/change on the VB, rather than have the downtime of shipping it back/forth to FL. Which is cool..

As for the TC, that'll be a bird of a different color...


This first video is 2 starts.. 1st is non-narrated.
https://www.youtube.com/watch?v=PYLK96_zAeQ

This one is a manually shifted take off with demonstration of the TC "flash" at speed..
https://www.youtube.com/watch?v=X0kBPDMbMIg
__________________
SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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  #8  
Old 08-16-2013, 09:44 PM
dripley dripley is offline
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I have followed your saga with the tranny and it makes my discontinued nv5600 look trivial in comparison. Just wish I knew something about the autos to add to finding a solution.
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  #9  
Old 08-20-2013, 04:45 PM
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Rogan Rogan is offline
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2nd time in four days..
uploadfromtaptalk1377035143814.jpg

Sent from my SPH-L710 using Tapatalk 2
__________________
SOLD: 96 2500 sclb 4x4, 5spd swap, cam, stack, #10, bhaf, 16.5*, 27mpg
SOLD: 01 2500 qcsb 4x4 HO 6spd, 2" level, 5" exh., Edge Juice, bhaf, 16mpg
SOLD: 97 3500 cc-drw, built 47re, 3 disk, 4" exh., #100, bhaf, gauges
SOLD: 02 QCSB 2500 4x4 5.9-auto
SOLD: 97 ECLB 2500 4x4 V10-auto.. junk..
CURRENT:'06 2500 ThunderRoad QCSB 5.9CTD 4x4, built Auto; '02 Silverado 2500HD 6.0L CrewCab LB 4x4; '14 vw cc r-line 2.0t 6 speed

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