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Having the common tranny issues with 46re, need guidance #2409956
11/28/17 02:01 AM
11/28/17 02:01 AM
Joined: Jun 2013
Posts: 1,521
Tacoma, Washington USA
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Adam71Charger Offline OP
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Adam71Charger  Offline OP
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I just bought a 2001 SLT 2WD 5.9 Durango for cheap cheap because it is experiencing tranny issues and CTM electrical problems that the PO didnt want to deal with.

I know this issue Im having is very common on these 46re Durangos/Rams/Dakotas, so I could use some guidance in solving it, thank you in advance!

My particular problem is the tranny only goes into 3rd when put in D. I believe it's called limp mode. You can manually shift down to 2nd, but no matter what you do it will not go into 1st or 4th, period. If you put it into drive, it goes straight to 3rd and stays there, no downshift to 2nd when you floor it. You can manually put the lever down into 2nd, and it will go into 2nd, and 2nd is where it will stay no matter what. You can put it back into D and it goes to 3rd. That is all you can do for forward gears. Reverse works fine.

I have read numerous posts about the governor/transducer, OD solenoid, output speed sensor, corroded connections, bad grounds, and frayed/shorted wires etc etc. I just dont know where to begin.

This Durango is very nice, smooth running 360, good interior, and I bought it for next to nothing so I dont mind putting some $ into the trans to make it trouble-free and reliable. Is there a standard combination of new solenoids/connectors/relays/harnesses/wires that can be put in all at once to eliminate all the common problems at once?


Here are the codes I pulled today:

P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure

P0743 A/T Torque Converter Clutch Solenoid Circuit Failure

P0720 A/T Output Speed Sensor - Low output Above 15 MPH

P1764 A/T Governor Pressure Sensor Signal Too Low

P1765 A/T Transmission Relay Circuit Malfunction


Where should I start?

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2409986
11/28/17 03:26 AM
11/28/17 03:26 AM
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s. e. pa.
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calrobb2000 Offline
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hi

1 erase codes and drive !

2 if codes reapear pull pan and look at fluid condition

adjust bands new filter see how much dirt is on magnet ?

may need solinoid kit replaced if trany is fairly clean

lots of dirt means most likely needs rebuilt !

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410012
11/28/17 08:45 AM
11/28/17 08:45 AM
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ruderunner Offline
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A good close look at the wiring harness would be a start. I'd toss in a known good tcm relay too.

Do you have a scanner that can read data or just codes?


Angry white pureblood male
Re: Having the common tranny issues with 46re, need guidance [Re: calrobb2000] #2410188
11/28/17 04:56 PM
11/28/17 04:56 PM
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fredericksburg,va
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cudaman1969 Offline
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Originally Posted By calrobb2000
hi

1 erase codes and drive !

2 if codes reapear pull pan and look at fluid condition

adjust bands new filter see how much dirt is on magnet ?

may need solinoid kit replaced if trany is fairly clean

lots of dirt means most likely needs rebuilt !

Good advice. I'm buying a Ram Van (2001) today with same issue. Owner said scan showed solenoid problems. Trans fluid smells burnt and is black so I'm going to drop the pan, adjust bands and change fluid-filter, got my fingers crossed this works.

Last edited by cudaman1969; 11/28/17 04:56 PM.
Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410201
11/28/17 05:26 PM
11/28/17 05:26 PM
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Tacoma, Washington USA
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Adam71Charger Offline OP
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Just codes. There's the wiring harness on the outside, is there also one on the inside behind the valve body?

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410273
11/28/17 08:02 PM
11/28/17 08:02 PM
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A727Tflite Online content
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Circuit failures are just that - electrical faults. They may cause a trans failure but not the other way around. There is a main harness on the outside on RE and a harness inside that handles governor pressure, OD and lockup. On the RH there is almost the same internal harness for OD and lockup but the governor is like the old 727, no governor solenoid or transducer. Dropping the pan and seeing burnt fluid and expecting to resurrect the unit by adjusting the bands and changing the fluid and filter is expecting a lot. You may get lucky - for a short while.

Last edited by Transman; 11/28/17 08:04 PM.
Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410397
11/28/17 11:18 PM
11/28/17 11:18 PM
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kenworth_goose Offline
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If it's going into limp mode that is 2nd gear not third. If it feels like it's dropping a gear when you shift it lower is because it's probably binding up between gears. Not good! If there is a fair amount of junk in the pan don't waist your money on electronics, rebuild it and then put new electronics in it.

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410400
11/28/17 11:23 PM
11/28/17 11:23 PM
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Salem
Grizzly Offline
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*Edit* IGNORE THIS FOR THE TIME BEING^^^^^^^^^^^^^^We'll overhaul it when it's ready to be overhauled. rolleyes




Adam, find anything with a wire connected to the trans and unplug, blow out with a can of electrical cleaner and plug 'em all back in again. Unhook the battery for an hour and connect it back up and go for a drive.

What's the speedo needle doing? Is it bouncing/taking awhile to register, or is it normal?

Start with the easy stuff first, I wanna know what that output speed sensor code is doing on there............. work

Last edited by Grizzly; 11/28/17 11:26 PM.

Mo' Farts

Moderated by "tbagger".
Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410431
11/28/17 11:58 PM
11/28/17 11:58 PM
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Michigan
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A727Tflite Online content
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RWD RE units default to third gear. 41TE and 42LE default to second gear.

Last edited by Transman; 11/29/17 06:15 AM.
Re: Having the common tranny issues with 46re, need guidance [Re: A727Tflite] #2410874
11/29/17 07:20 PM
11/29/17 07:20 PM
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dogdays Offline
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I know it's a completely different manufacturer but on my 4L80E when it went into limp home mode it needed a new speed sensor. The factory service manual had a troubleshooting chart and it led me right to the problem. It was specific enough that it pointed out which one needed to be replaced. Steps to repair:
1. buy replacement
2. crawl under the vehicle
3. unplug electrical connector
4. remove hold down bolt
5. pull sensor
6. replace sensor with new
7. replace hold down bolt
8. connect new sensor
9. crawl out from under the vehicle

I hope your fix is similar.

R.

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2410968
11/29/17 09:48 PM
11/29/17 09:48 PM
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Buford, GA
I_bleed_MOPAR Offline
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Or you can do like I did on my '00 Durango 5.9 and convert it to a 5 spd. drive


Tim


'71 Charger 383/727
'17 Challenger SXT (Wifeys car wink )
Re: Having the common tranny issues with 46re, need guidance [Re: I_bleed_MOPAR] #2410987
11/29/17 10:24 PM
11/29/17 10:24 PM
Joined: Aug 2005
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Salem
Grizzly Offline
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Originally Posted By I_bleed_MOPAR
Or you can do like I did on my '00 Durango 5.9 and convert it to a 5 spd. drive


Tim


Definitely a better way to go than to rebuild that POS Dodge automatic.

One day, (it'll take a Brain Surgeon) I hope someone will figure a way to run a 545rfe behind a Magnum.

By the way, what did you use for a flywheel on the 5.9 to do the swap?


Mo' Farts

Moderated by "tbagger".
Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2411313
11/30/17 03:29 PM
11/30/17 03:29 PM
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roadrunninMark Offline
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You can run the NAG1 too, contact Sound German Automotive for the stand alone controller.

I would check the 3-4 accumulator spring after everything else as well. If you have the pan and filter down, you are almost there. 5 bolts I believe hold a small plate under the spring. These springs break and cause shifting problems. They also cause snap ring breakage in the clutch pack drums. If it is broken, you can get the diesel version.

Re: Having the common tranny issues with 46re, need guidance [Re: roadrunninMark] #2411405
11/30/17 06:47 PM
11/30/17 06:47 PM
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360view Offline
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Originally Posted By roadrunninMark
You can run the NAG1 too, contact Sound German Automotive for the stand alone controller.


This is news to me.

Could the Sound German Automotive
stand alone controller
also be used on an earlier OBD-I 1995 vehicle
like to replace a 46RH
with a WA580 auto trans?

https://www.allpar.com/mopar/transmissions/NAG1-WA580.html

Replacing a
46RH with 3.21 ratio diff
With a WA580 with 2.76 diff
certainly seems to be an upgrade
Since torque capacity is 420+ ft-lbs
First gear crawl speed would also be superior.

Re: Having the common tranny issues with 46re, need guidance [Re: Grizzly] #2411416
11/30/17 07:03 PM
11/30/17 07:03 PM
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Buford, GA
I_bleed_MOPAR Offline
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Originally Posted By Grizzly


Definitely a better way to go than to rebuild that POS Dodge automatic.

One day, (it'll take a Brain Surgeon) I hope someone will figure a way to run a 545rfe behind a Magnum.

By the way, what did you use for a flywheel on the 5.9 to do the swap?


RockAuto- '01 1500 5.9 flywheel, HD clutch assy. that was optional for 1500 and '01 Dakota V6 donor truck, new Dakota clutch hydraulics.



Tim


'71 Charger 383/727
'17 Challenger SXT (Wifeys car wink )
Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2411429
11/30/17 07:37 PM
11/30/17 07:37 PM
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roadrunninMark Offline
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360, Yes, you can use the NAG1 even behind a LA small block. Your old trans set up would not be used, Sound German would be able to tell you what you need better than I could. I just talked to them before about putting behind my 71 318. I went with a 42RH instead as it was a lot cheaper at the time. The controller is a little pricey (about 1200) but if you get the trans cheap enough it may be worth it compared to a complete rebuild of a 46RH. Plus the gearing is a huge improvement. You are exactly right about the gearing. Send them an email and they will get the info you need.

Re: Having the common tranny issues with 46re, need guidance [Re: roadrunninMark] #2411441
11/30/17 08:08 PM
11/30/17 08:08 PM
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fredericksburg,va
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cudaman1969 Offline
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Originally Posted By roadrunninMark
360, Yes, you can use the NAG1 even behind a LA small block. Your old trans set up would not be used, Sound German would be able to tell you what you need better than I could. I just talked to them before about putting behind my 71 318. I went with a 42RH instead as it was a lot cheaper at the time. The controller is a little pricey (about 1200) but if you get the trans cheap enough it may be worth it compared to a complete rebuild of a 46RH. Plus the gearing is a huge improvement. You are exactly right about the gearing. Send them an email and they will get the info you need.

There is a whole LOT more to it than just a controller. Basicly a total rehab of the car to fit, then the problem of the output flange, speed censers, converter options, the list goes on and on. There are better options out there.

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2411442
11/30/17 08:19 PM
11/30/17 08:19 PM
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St Louis, MO, USA
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srunge55 Offline
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I was having similar problems with my 47RE and replaced the governor solenoid, sensor, accumulator spring and speed output sensor in the trans and all fixed now. Pretty easy job but you have to drop the pan. Here is a link to the kit for the 46RE. I also added a drain plug to the pan in case I ever need to drop the pan again.

http://www.cascadetransmissionparts.com/46regovernorpressureservicekit2000up.aspx

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2411446
11/30/17 08:21 PM
11/30/17 08:21 PM
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srunge55 Offline
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Also here is a nice video on the procedure to replace the tranny parts.

https://www.facebook.com/cascadetransmissionparts/videos/1039161212861907/

Re: Having the common tranny issues with 46re, need guidance [Re: Adam71Charger] #2411975
12/01/17 09:24 PM
12/01/17 09:24 PM
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Tacoma, Washington USA
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Adam71Charger Offline OP
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I had a moment today to recheck fluid, connections and battery. I am getting a filter and gasket and will remove pan when i get it.

I unhooked the battery for about 20 minutes and unhooked both connectors and cleaned the connectors and the battery terminals really well. I noticed my battery is 6 years old so I probably should replace that.

I check the tranny fluid through the dipstick tube again and it was clean and didn't smell bad. who knows the PO may have change the fluid before he sold it.

In the relay box under the hood I noticed that my trans relay has five prongs but it sits in a but it sits in a 4 terminal base, could i possibly have wrong relay?

I unhooked the connectors from the trans and cleaned them out and removed about 3 in of sheathing to see if any of the wires were frayed. They were all intact.

when I reconnected everything and the battery I started the Durango and within seconds the check engine light came back on

since I have to drop the pan anyways I think I'll just get all the parts I may need and if the fluid doesn't have a bunch of chunks in it I'll just go ahead and install the parts

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