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Dodge Dakota Transmission Problems

690 messages,  Last post on Nov 24, 2009 at 12:18 PM

You are in the Dodge Dakota Forum. Your Host is kcram

What is this discussion about? Dodge Dakota, Truck


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#122 of 690
Re: trans [dustyk] by scoopyex
Mar 29, 2007 (11:39 am)
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Replying to: dustyk (Mar 15, 2007 1:57 pm)

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.
#123 of 690
Re: trans [scoopyex] by dustyk
Mar 30, 2007 (9:49 pm)
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Replying to: scoopyex (Mar 29, 2007 11:39 am)

"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
#124 of 690
Re: trans [dustyk] by dewaltdakota
Mar 31, 2007 (10:36 am)
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Replying to: dustyk (Mar 30, 2007 9:49 pm)

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.
#125 of 690
Dusty is now guru! by bpeebles
Mar 31, 2007 (1:17 pm)
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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.)
#126 of 690
Re: Dusty is now guru! [bpeebles] by kcram HOST
Mar 31, 2007 (5:22 pm)
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Replying to: bpeebles (Mar 31, 2007 1:17 pm)

We still need lieutenant gurus for when the main guru goes on vacation
 
kcram - Pickups Host
#127 of 690
Re: trans [dewaltdakota] by dustyk
Apr 01, 2007 (8:57 am)
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Replying to: dewaltdakota (Mar 31, 2007 10:36 am)

Scoop,
 
You're being way too kind, but I appreciate it.
 
Bests,
Dusty
#128 of 690
Re: Dusty is now guru! [bpeebles] by dustyk
Apr 01, 2007 (9:00 am)
Reply

Replying to: bpeebles (Mar 31, 2007 1:17 pm)

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
#129 of 690
Re: Dusty is now guru! [kcram] by dustyk
Apr 01, 2007 (9:01 am)
Reply

Replying to: kcram (Mar 31, 2007 5:22 pm)

Yeah, and I think I need one!!
 
Bests,
Dusty
#130 of 690
r/t trans swap by mopar360rt
Apr 02, 2007 (7:39 pm)
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#131 of 690
r/t trans swap by mopar360rt
Apr 02, 2007 (7:39 pm)
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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

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