Ecu

[hardrocker31]

The rear axle ABS(VSS) sensor sends out 25,000ppm(pulses per mile)
The speedometer, computer and cruise are calibrated for 8,000ppm, Ford standard since mid-1980's

The GEM module in 1998-2000 did this "down conversion" from 25k to 8k
The SGI-100BT can also do this "down conversion"

There is another option, 1986 thru 1997 Rangers used a regular speedometer gear with VSS on the transmission tailshaft, or transfercase output shaft
On 2WD automatics the DRIVE gear is machined onto the output shaft just not used after 1997
So you could get a 1995-1997 tail shaft housing that has the hole and the hold down for speedo gear/VSS setup and use that directly to cluster/speedo and computer, cruise, as it outputs the Ford Standard 8,000ppm

Unit looks like this: https://www.therangerstation.com/tech_library/images/speedsensor.gif
Has speedo cable hookup, not used, and VSS 2 wire sensor

Looks like this with DRIVEN gear attached: https://www.therangerstation.com/tech_library/images/speed/vss_withgear.JPG

Tail shaft housing just slides off, I would replace rear main seal
Your current housing should have the cast hole but never drilled out, and the flat area next to it for a threaded hold down bolt
So you might be able to machine it to accept the VSS/gear setup

And that can be done even though its 4x4?

 

[hardrocker31]

I switched motors, bell housing, hard wired starter. And ive drove it quite a bit. Even though i can only go 45mph

Did 1995 have PATS? If not thats probably why the truck runs

 

[RonD]

No, just on 2WD automatics

You will have to use the SGI-100BT

OR

You could swap to a 1990-1997 BW1354 Transfer case, they have the speedo gear setup

 

[RonD]

No PATS until 1999, it was a pay extra option in 1998 but not many takers

1995 computer will also want to have 35psi fuel pressure, so did you change to a Return fuel systems?

 

[hardrocker31]

No PATS until 1999, it was a pay extra option in 1998 but not many takers

1995 computer will also want to have 35psi fuel pressure, so did you change to a Return fuel systems?

The motor i got has the nipple coming out for fuel return but looked factory closed off

 

[hardrocker31]

I probably just need to send you some pics of my motor and other components.

 

[RonD]

1998 and up engines all used returnless fuel systems using 60psi fuel pressure

If its a 1998-2000 4.0l OHV then the "nipple" is a fuel pressure test port, not for a return, its a schrader valve, like a tires air valve, works the same way

1997 and earlier had a Fuel Pressure regulator(FPR) on the engine, it had the Return hose attached, so there were 2 fuel lines in engine bay, IN from filter/pump, OUT back to gas tank from FPR, they ran at 35psi fuel pressure

1998 and up have the FPR inside the gas tank so only needed one fuel line to engine bay

So 1995 computer would be struggling with its injector open times as more fuel will flow thru at 60psi vs 35psi when they open
Will set Rich codes once it been running and warmed up fully

 

[hardrocker31]

1998 and up engines all used returnless fuel systems using 60psi fuel pressure

If its a 1998-2000 4.0l OHV then the "nipple" is a fuel pressure test port, not for a return, its a schrader valve, like a tires air valve, works the same way

1997 and earlier had a Fuel Pressure regulator(FPR) on the engine, it had the Return hose attached, so there were 2 fuel lines in engine bay, IN from filter/pump, OUT back to gas tank from FPR, they ran at 35psi fuel pressure

1998 and up have the FPR inside the gas tank so only needed one fuel line to engine bay

So 1995 computer would be struggling with its injector open times as more fuel will flow thru at 60psi vs 35psi when they open
Will set Rich codes once it been running and warmed up fully

Its not a shrader valve. Its an elbow off the back of the fuel rail

 

[hardrocker31]

Its not a shrader valve. Its an elbow off the back of the fuel rail

Looks like it was a return at some point

 

[hardrocker31]

Its not a shrader valve. Its an elbow off the back of the fuel rail

Ill post a couple pics when i get home so you can see everything

 

[RonD]

If its at the end of passenger side rail by firewall then its the Pressure wave damper, would have a vacuum hose attached in case it ever leaks

 

[hardrocker31]

If its at the end of passenger side rail by firewall then its the Pressure wave damper, would have a vacuum hose attached in case it ever leaks

This is the number thats cast on the motor. If you can read it can you tell me year and ect.

 

[Josh B]

This is the number thats cast on the motor. If you can read it can you tell me year and ect.View attachment 91286

I don't think you'll read that without some guessing

 

[RonD]

That's the head casting number, "98TM" casting, so from a 1998 mold, used from 1998 thru 2000 on 4.0l OHV

Block and head casting numbers are not year specific, in that the same mold is used over several years if design is not changed
But unless the head was swapped it would be a 1998-2000 4.0l engine

 

[hardrocker31]

That's the head casting number, "98TM" casting, so from a 1998 mold, used from 1998 thru 2000 on 4.0l OHV

Block and head casting numbers are not year specific, in that the same mold is used over several years if design is not changed
But unless the head was swapped it would be a 1998-2000 4.0l engine

So would the computer be different between those years