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thank you for your replies in advance.
:sick:
Pin 1 = Reverse Lamp circuit
Pin 2 = Instrument Panel Transmission Range Display
Pin 3 = no connection
Pin 4 = no connection
Pin 5 = Transmission Range Sensor 5vdc supply
Pin 6 = Park/Neutral starting circuit and PCM input
Regards,
Dusty
also if anyone else know what might be causeing my automatic dakota to have delayed engagement into drive and reverse and also flair up between shifts i would really appreciate the info....thanx
Hope this helps
My Dak is a 2000 Dakota Sport 4X4, 4.7 v8 w/ 4 speed automatic
Regards,
Dusty
Thanks
russ
There is no single component on a Dodge truck that can cause so many varied and strange symptoms as the Throttle Position Sensor.
However, I would first suspect the transmission cable sticking, especially since the symptom is related to temperature.
Regards,
Dusty
Mr Holt ASE MASTER CERTIFIED
Each of these transmissions have what Chrysler calls a Throttle Valve Cable. This cable is used to controls shift speeds, shift quality, and part-throttle downshift speed (sensitivity).
Look closely at the Throttle Body Lever where the accelerator cable is connected. You will notice a second cable attached to this lever that routes downward along the right side (passenger side) of the transmission.
There is an adjustment procedure for this cable that must be followed precisely. If out of adjustment, slipping or shift flare, rough shifts, premature or late shifts will occur.
If the Throttle Valve Cable linkage sticks, usually at the transmission end, it will cause your symptom. There is also a return spring on the cable bracket at the transmission. I've seen these broken or completely missing. In cold weather I've also seen the pivot shafts sticking causing long shifts. These get gummy after some years from oil and road grime.
By the way, this very common problem accounts for many Mopar transmissions being "rebuilt" by shops that are less than honest.
Good luck and best regards,
Dusty
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.
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
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:
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.)
kcram - Pickups Host
You're being way too kind, but I appreciate it.
Bests,
Dusty
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
Bests,
Dusty
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.
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
Also i don't care about the lenght of the trans because i'll probably have a driveshaft made for it anyways.
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.
Thanks
Thanks
Tony
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
Are you sure of the code? My list says, "P1740 Automatic Transaxle (Acura, Honda)."
Regards,
Dusty
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
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
Bests,
Dusty
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
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?
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
Any suggestions on what it needs? Speed sensor?
Thanks,
Dave
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
Thank very Much,
Angel6
*)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)