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Manual Transmission Compatibility


Cheburashka

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Good, only other hurdle is the Speed sensor issue

When you get the new/used transmission pull off the tail shaft housing and see if you can use your 1995 tailshaft speedo drive gear on it and of course your 1995 tail shaft housing if so

Worst case is you use an SGI-5E interface using the rear axle's ABS sensor, thats what Ford did in 1998-2000

Ok, so the transmission swap went fine. Thanks for all the help.

Do you know where under the hood I can grab the signal from the ABS sensor and where the speedo signal cable is?
 


RonD

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So you couldn't swap tail shaft housings?


The 2 ABS sensor wires run from rear axle to the ABS module

The 1995 should have 2 VSS sensor wires by the tail shaft, where they plugged into the VSS sensor

These 4 wires should be in the drivers side frame rail

The ABS wires can be tapped, for use with Dakota SGI-5E

And the VSS wires already run to speedo, computer and cruise

So
ABS sensor===(2 wires)======SGI-5E=====(2 wires)=====VSS wires

SGI-5E needs to be IN the cab, so you will need to run 4 wires into the cab, for best result

But you can just run 2 wires and use common ground
 

Cheburashka

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So I got a GPS based speedometer sending until from Summit Racing and hooked everything up, but still no speed and set to 8000ppm. Not sure what I'm doing wrong.

The new transmission also has a sensor in the tail shaft. It looks like a speed sensor but I guess it's something else. The connector is the same. Any idea what it is?
 

RonD

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Its called an OSS(output shaft speed) sensor, its about 20,000ppm I think, 2001 and up Rangers used this, the Computer gets this signal directly and converts it to 8,000ppm and sends it out to speedo

Whats the brand and model of the GPS unit?

And what wires did you splice into?
The speed signal used a grey/black wire to all equipment, but also any source for that 8,000ppm signal needs to be grounded as well
Its also ACvolts on the 8,000ppm signal that are used, not DC
 
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Cheburashka

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RonD

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Strange, the unit pictured only has 4 wires but there should be 5, no Purple wire is shown, the 8,000ppm wire

But the sum-800108 part number install search sends me to this page: https://static.summitracing.com/global/images/instructions/sum-800109.pdf

sum-80010"9"

Anyway what wire did you hook up to to get speed signal to the speedometer, which grey/back wire?

And did you make sure the old VSS sensor wires for the old transmission are protected, not shorting out under the truck


EDIT:
Found instructions: https://static.summitracing.com/global/images/instructions/sum-800108.pdf

So white wire is speed signal OUT, make sure Grey is not shorted to ground
Switch 1 ON
Switch 2 OFF
For 8,000ppm
 
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Cheburashka

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Yep, exactly what I did. I don't get a speed reading but don't get a CEL either. I guess next step would be to tap the VSS line and put a multimeter on low voltage AC.

I doubt it is shorted, I checked the wiring twice and even rewired it. I did not touch the orange wire going to the sensor, just left it on the plug as it's a ground anyway. I checked the grey wire before extending it and it was not grounded.

Should have gotten the Dakota Digital! This thing is way hard to diagnose if things go wrong.
 

RonD

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If you are not getting P0500 code then computer is getting a speed signal of some sort
 

Cheburashka

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It's OBD 1, even though it has the OBD2 plug, but I think I should still be getting a CEL if there was nothing on the output of the VSS signal.
 

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It's OBD 1, even though it has the OBD2 plug, but I think I should still be getting a CEL if there was nothing on the output of the VSS signal.
No, it's not.

If it has the OBDII diagnostic port it is OBDII.

Part of a deal that Ford cut with the EPA was keeping their 3/4 ton and up trucks OBDI through the 96 MY because a full redesign was coming in 97, but in return anything under 1/2 ton, so Rangers, Explorers, and all the cars, were OBDII by 95 or earlier.
 

Cheburashka

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Strange. I have an OBD 2 Bluetooth reader but I can't get it to read the data from the port, and I can reset the CEL by unplugging the battery for a few minutes.
 

adsm08

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Strange. I have an OBD 2 Bluetooth reader but I can't get it to read the data from the port, and I can reset the CEL by unplugging the battery for a few minutes.
If you hook up a regular code reader it should work. It's very primitive, especially compared to what we have today, depending on what app you are using you may not get anything.

And unhooking the battery has always reset CELs up until very recently.
 

Cheburashka

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If you hook up a regular code reader it should work. It's very primitive, especially compared to what we have today, depending on what app you are using you may not get anything.

And unhooking the battery has always reset CELs up until very recently.
Very good to know. In that case I should be able to pull VSS readings from OBD2, right? I tried using the Torque app and it did not work.
 

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+1 to what adsm08 said

1995 was Ford first attempt at OBD2 and there can be issues with OBD2 reader not working, but just in 1995 MY
 

Cheburashka

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CEL is back. I guess it's not getting a signal. Will have to look again at the wiring. Maybe I should try running a different wire? Does the gauge of it matter?
 

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