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Dodge Dakota Transmission Problems

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Comments

  • scoopyexscoopyex Posts: 31
    The 45rfe, 454rfe, and 545rfe are all electronically controlled via a solenoid pack inside of the transmission. the throttle controlled valve body went the way of throttle body injection and carburetors. The TPS serves to control fuel rate and shift points of the tranny dependant on TPS position and engine load and rpms.

    I've read several articles regarding the valve body control cable system, and for the life of me I couldn't find one on my 2000 Dakota Sport or my new Ram 1500. The health of any flavor of these transmissions is dependant on many factors. number one being maintenance. Anybody with a Dodge that uses this family of transmissions should follow the maintenance schedule in the owners manual and have them periodically checked by a good transmission repair shop or the dealership. If all of the procedures for maintaining these transmissions are followed, aside from periodic TPS replacement, they should provide decent service for the life of the truck.

    The reason why I toss TPS into the equation is because it will in fact cause the transmission in late model Dodge's to act erratically and possibly cause damage to the transmissions. The 2000 Dakota I just traded in required two replacement tps's in the two years that I owned it. in both instances the TPS and battery cable removal cured my truck of erratically shifting, hard shifting, and disconnecting the TCC at hiway speeds.

    Another item on maintenance is; for the life of Your Dodge truck, DO NOT USE DEXRON type fluids. Use CHRYSLER SPECIFIC fluid that is formulated for these transmissions. I have encountered many people who avoid Dodge's for transmission problems, and 99% of their problems were self-infliced by using DEXRON.
  • dustykdustyk Posts: 2,926
    "The 45rfe, 454rfe, and 545rfe are all electronically controlled via a solenoid pack inside of the transmission. the throttle controlled valve body went the way of throttle body injection and carburetors. The TPS serves to control fuel rate and shift points of the tranny dependant on TPS position and engine load and rpms."

    Scoop,

    You know, I had to go back to the my previous post and the originating one to figure what the heck you were talking about. Then I realized that I had experienced an exceptionally deep senior moment! Lack of sleep and a constant battle with insomnia are my only defense.

    My apologies. Scoopy is completely correct. The 545RFE family does not utilize a mechanical shift modulation control as the previous generation Mopar transmissions. In fact, any Chrysler-built automatic transmission that has includes "RFE" nomenclature relies soley on electronic control for shift schedules.

    To be specific, the fully electronic Mopar transmission's speed range selection is controlled by a number of direct and indirect inputs.

    Direct Inputs

    *Throttle Position Sensor
    *Crankshaft Position Sensor
    *Transmission Range Selector
    *Transmission Temperature Sensor
    *Input Shaft Speed Sensor
    *Output Shaft Speed Sensor
    *Line Pressure Sensors
    *Overdrive Switch

    Indirect Inputs

    Indirect inputs to the Transmission Control Module (TCM) are the result of Powertrain Control Module (PCM) outputs that represent various engine operating conditions (i.e. engine load).

    *engine/body/axle ratio
    *intake manifold pressure
    *target idle speed
    *torque reduction confirmation
    *engine coolant temperature
    *ambient air temperature
    *fuel temperature (some models)
    *air conditioning compressor enabled
    *battery temperature
    *charging voltage

    Best regards,
    Dusty
  • Dusty,

    Even during one of your "exceptionally deep senior moment(s)", you have more knowledge about these beasts than most of the rest of us, put together. :shades:
  • bpeeblesbpeebles Posts: 4,085
    I herby relenquish my throne and sceptor to Dusty as the guru of Dakotas -- LOL

    I hope that Dusty does not want me to burn my tattered factroy service manual as proof. I still have not memorized the secion about automatic xmission (because I orderd MANUAL tranny from factory.)
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    We still need lieutenant gurus for when the main guru goes on vacation :D

    kcram - Pickups Host
  • dustykdustyk Posts: 2,926
    Scoop,

    You're being way too kind, but I appreciate it.

    Bests,
    Dusty
  • dustykdustyk Posts: 2,926
    Bpeebles,

    Not necessary. Besides, I'm not sure I could follow in your footsteps.

    By the way, my factory manual's starting to disintegrate, too.

    Bests,
    Dusty
  • dustykdustyk Posts: 2,926
    Yeah, and I think I need one!!

    Bests,
    Dusty
  • i have a 1999 dakota r/t reg cab. there is nothing wrong with it besides i'd love to have a 5-speed tranny in it. i know that it has the 46re tranny in it which is the full size truck trans, so that should mean that the full size manual should fit in it but i don't know the name on the tranny or for sure if it would fit. if anyone could tell me anything, i'd appreciate it. thanks
  • bpeeblesbpeebles Posts: 4,085
    When you say "5-speed tranny" - I hope you suggesting you would like to swap out your automatic for the 5-speed manual transmission.

    If you are suggesting that you want to install one of the newer automotic xmissions, be prepared to also reprogram the engine-computer -to- transmission computer communications. Modern automatic xmissions do most of their "thinking" insiside a computer to determine shift-points and other important stuff.

    In model-year 2000, the Dakota recieved a the Jeep 4.7L V8 which came with a new automatic xmission. Personally, I orderd mine V8 from the factory with the 5-speed manual and enjoy up to 21MPG with it.
  • dustykdustyk Posts: 2,926
    The 46RE was used in full size RAM applications, however that doesn't mean that a 46RE out of a RAM will fit in your Dakota.

    Fortunately, Mopar engines have universal bellhousing-to-engine mounting configuration, so I'm pretty sure you won't have a problem bolting any truck manual up to that 360 engine. But extention shafts (tail stocks) vary in length depending on application.

    The Dakota in recent years used the 5-speed, NV3500 manual gear box. I'm sure you should be able to find one around that is out of a Dakota.

    A 5-speed out of a RAM will most likely be the heavy-duty version with wide-spaced gearing. I'm guessing that you really want the close-ratio version that came with the original Dakota R/T.

    Good luck,
    Dusty
  • yeah thanks guys, and yes i'm wanting a 5 speed stick, but if i use a nv 3500 that come out of the 318 dakotas, i'm pretty sure i'll end up tearing the gears out of it. a 318 is powerful but when you've got a 360, it produces alot more torque, which i'm sure you guys know. but mine is going to be built up with about around 500 hp.and i'm pretty sure that will tear out a standard 318 5-speed.

    Also i don't care about the lenght of the trans because i'll probably have a driveshaft made for it anyways.
  • oh yeah the transmission that is in the truck factory is a 46re, i've read all the numbers on the trans, and that's the trans it calls for. thanks though.
  • bpeeblesbpeebles Posts: 4,085
    The 5-speed manual xmission in my 2000 Dak with 4,7L v8 is the New Venture 3500 (aka NV3500)

    Since the factory shop manual only mentions the NV1500 and NV3500 manual xmsissions and the NV1500 was only used on the 4 cyl engine... I have to assume that the NV3500 was also used on the 360ci engine.

    You may want to do some more research if you want a xmission to handle 500 HP. There are some websites around that list virtually every xmission/engine combonation imaganable. THey also list recommende torque for each trannie.

    I hope that info helps you in your quest.
  • Hopefully someone can help me. I have a 2003 Dodge Dakota. (6 cyl)(it's just a baby) It was driving just fine. Got ready to leave work, put it in drive, check engine light came on and it felt like I was taking off in 2nd gear. No get up and go. Took it and had the transmission completely flushed out. Had a mechanic test it and the codes came back 7612 & 7613. He said that it was the governer pressure solenoid/ governer transducer sensor that attach to the valve. He also mentioned that the voltage was too high or too low....WHAT?? Can someone please help me out here and let me know what is going on.
    Thanks
  • tonym5tonym5 Posts: 6
    I just bought a 2003 Dakota with 3.9 L and auto trans. The shifting is very hard. I have had 2 engine lights with the code P1740. I have read some of the previous messages and this appears to be a common problem. What does the code mean, and what are the suggested fixes?
    Thanks
    Tony
  • dustykdustyk Posts: 2,926
    The first thing I would advise is checking the fuses located on the left side of the instrument panel. An open IOD fuse will cause the transmission to go into Limp Mode, which on the 42RE transmission means it will try to start a vehicle launch in second gear.

    Next, I'd check all of the connectors at the transmission for corroded or damaged terminals.

    The codes are TCM codes. I would need more information in order to give you some idea what's going on.

    Regards,
    Dusty
  • dustykdustyk Posts: 2,926
    Tony,

    Are you sure of the code? My list says, "P1740 Automatic Transaxle (Acura, Honda)."

    Regards,
    Dusty
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    Dusty, I found this:


    Service Bulletin Number: 211100
    Bulletin Sequence Number: 146
    Date of Bulletin: 0010
    NHTSA Item Number: SB614660
    Make: DODGE TRUCK
    Model: DAKOTA
    Year: 2000
    Component: INTERIOR SYSTEMS:INSTRUMENT PANEL:GAUGE:INDICATOR
    Summary: SOME CUSTOMERS MAY COMPLAIN OF A MALFUNCTION INDICATOR LAMP ILLUMINATION DUE TO DIAGNOSTIC TROUBLE CODE P1740 - TCC OR OD SOLENOID PERFORMANCE.


    kcram - Pickups Host
  • tonym5tonym5 Posts: 6
    Thanks Guys
    I had a mechanic tell me that it is the overdrive sensor. Approx $180 for the part a 3 hrs labor. My question is if that will solve the hard shifting and the fact that I have to ease off the gas pedal to shift? Is there anything else the mechanic should do while he is in there other than replace the filter? Thanks for your help thus far
    Regards,
    Tony
  • dustykdustyk Posts: 2,926
    Thanks! Obviously my 2000 hard list is out of date!!!

    Bests,
    Dusty
  • dustykdustyk Posts: 2,926
    Overdrive Sensor? Did he mean the Overdrive Solenoid?

    On the 42RE hard shifts can be caused by the Lockup Solenoid. This is a valve body repair and can be done without removing the transmission from the vehicle. The Pressure Regulator Solenoid could also be malfunctioning, or you have a dragging Front Band, although that's very rare. (usually the Band Apply levers get bent causing slipping.)

    Sorry about steering you wrong on the P1740 code. My list is either incorrect or out of date.

    Regards,
    Dusty
  • I have a 2001 Dakota 4X4, 4.7L, 45RFE transmission.
    My check engine light came on while driving and I noticed that the transmission had dropped out of overdrive. When I started off from a stop I noticed that the transmission had not downshifted, and that it was trying to start out in third gear. I now have to manually shift and only have 2 and 3 gears forward and reverse.
    I checked the codes and it gave me a P0700 code. This code only says Transmission Control Module.
    I purchased a TCM, at a cost of $800.00. I installed the unit, with battery cables off.
    I still don't have any shifting of the transmission.
    Is there something else that P0700 means?
  • dustykdustyk Posts: 2,926
    According to my list a P0700 is "Transmission Control System Malfunction."

    The first thing you should check are all fuses, both at the instrument panel and the Power Distribution Center (PDC) that's adajcent to the vehicle battery. In particular, an open IOD fuse will cause the transmission to go into Limp Mode. Starting in second or third gear is symptomatic of the transmission being in Limp Mode.

    On Chryslers especially, the next thing to check is the electrical connectors at the transmission. Your vehicle is old enough to have developed corroded terminals at the connectors. An open Governor or Shift Solenoid circuits can cause this problem.

    The only component quality problem that I'm aware of on early 545RFE transmissions were bent accumulator plates. Chrysler fixed this problem soon after the 545RFE was introduced, but depending on when the vehicle was manufacturered your 2001 may have an early version.

    Regards,
    Dusty
  • dervin1dervin1 Posts: 9
    My dakota just started to delay in shifting from 1st to 2nd gears. The RPMs have to get to 2500-3000, the speedometer isn't working until the RPMs get to around 3000, then it shifts into 2nd gear and the speedometer starts working. No other shifting problems, no slipping. Brake light is on, ABS light and check engine light too.
    Any suggestions on what it needs? Speed sensor?
    Thanks,
    Dave
  • dustykdustyk Posts: 2,926
    The speedometer symptom is the key. You probably have a defective Rear Wheel Speed Sensor or corroded terminals at the sensor's connector. This sensor supplies an input signal that is used to operate the speedometer as well as determine transmission shifting pattern.

    This sensor is located on the rear differential housing and is replaceable without removing the differential cover. It is mounted the outside of the housing with one bolt.

    Best regards,
    Dusty
  • angel16angel16 Posts: 1
    I have put three transfer cases in my Dodge in one year. I can't figure out what the problem is with my truck. I am getting ready to buy another transfer case for it again. Can someone please help me with this problem I am having or tell me what I can do about it?

    Thank very Much,
    Angel6
  • bpeeblesbpeebles Posts: 4,085
    Can you please give us more details like:
    *)Which xfer case does your truck have (the 2000 model-year was supplied with at least 2 different ones)
    *)Why are you replacing the xfer cases so frequently? (Should easilly last the life of the vehicle because you should be in 2wheel drive mode 99% of the time)
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