Greetings
I am new to the forum and have searched for my answer here and elsewhere to no avail.
I have a 2005 Ford Ranger with automatic Trannsmission
Motor is toast.
I have a 1985 2.4 liter Toyota Diesel engine that I will be swapping into this truck
Mounting and Trans adaptors fuel systems etc are no issue for me
I am trying to figure out how to handle the PCM so I can utilize all the features of the transmission.
My question would be what inputs from the ECM and or the Engine itself are required to make the PCM function.
I don't mind having a switch panel in the truck to control Trans modes if that is what will work.
Any help or pointers to appropriate documentation would be appreciated.
Thanks
Tim

 

Welcome to the forum

It would probably be possible but not practical to use the 2005 Ford PCM and HEC Instrument cluster, they are "married" so neither will work without the other, and the PCM supplies most of the gauge data for the cluster.
2003 or older Ranger cluster will work on its own

You will need a PCM programmer, and never used one so can't say what data you can taylor make for the different sensor's output from the new engine, Ford uses 5volt for most sensors, so PCM expects between 0-5v from engine sensors, not sure what Toyota uses
The PCM needs a few different sensors to calculate best ratio, RPM, speed and throttle position of course, but I think it also needs Load which it gets from MAF and MAP sensors in 2005


A universal Transmission control computer is not cheap($700) but would allow you to control the shifting using RPM and throttle position for diesel torque curves which are much different than gasoline engine curves, so no need for the Ford PCM
Not sure if that have them for the 5R44E/55E models, but this 2005 trans is the same as 4R44E/55E so if it works for that it will work for 5R but as a 4-speed not a 5-speed

 

Thank you for all the information.
I wonder if I could use an arduino to collect engine info and translate it to what the ecm and pcm require?
Whatever is missing from the old diesel I could make up in the software and it woukd all be adjustable
Any thoughts on this approach ?
Thanks
Tim

 

You could mimic sensors but thats not the main issue
Its the software in the computer that controls shift points and they need to be setup for diesel limited torque band

You could setup an arduino as the transmission controller, so get rid of computer and HEC Cluster
The solenoids are just on/off relays

 

That is an idea.
Perhaps I can handle some of the Gauges as well?
I wonder if there are block diagrams or logic diagrams for the operation of the Transmission
Thanks
Tim

 

You need a 2003 or older cluster, 2005 Cluster will not work without its 2005 PCM(engine computer) connected and working


Have a look here: https://atracom.blob.core.windows.ne.../2003_5_50.pdf

All the solenoids get 12volts with key on, each has a separate Ground wire running back to the PCM, the PCM Grounds each solenoid to activate it

EPC and TCC solenoids use Pulse Modulation of the Ground, so variable PWM(pulse width modulation) to change line pressure(EPC) and torque converter lock up(TCC)


IMO, using an older 1985 diesel engine with this newer gasoline engine transmission is alot of work without alot of benefit

There must be some older non-computer assisted automatics made for diesel engine use, so have correct shift points.
Or even a C3 transmission
And making an adapter would be time better spent

 

Thanks for the link Exactly what I needed
I will look for a Gauge cluster or Maybe I will hack the one that is there out and install a plate with some direct gauges

There probably are older transmissions etc but where is the fun in that?;-)
Have Fun
Tim
PS as time allows I will update this thread or will stat a build thread