tachometer help OBS

[IDIoit]

this is one of the two last item of concern.

cannot get the tach to work.
I have a new sensor on order.
but seeing is that this was a E4OD truck before,
im curious if the tach wires that the E4OD is dependent on
actually go through the trans.
the ECU is deleted.

thinking I need to jump some pins.
anyone have a thast diagram for the E4OD connector?
and the ECU wiring diagram?

 

[Black dawg]

ON the e40d to manual swaps I have done, the tach would not work without the ecm. Usually just left it in there...tach works smoother with it. I am sure wires could be jumped to not use the ecm

 

[laserjock]

It may be the same thing again.

http://i140.photobucket.com/albums/r9/sharpierides/Tachometer69-73Diesel3.jpg

I’m not sure what year this is.
It looks like power comes through a key on and warning light.


I have a Haynes manual that I think covers 94 at Home. I’ll try to remember to look.

 

[FORDF250HDXLT]

You must be registered for see images attach

 

[IDIoit]

 

[laserjock]

I believe this is the one you need.

You must be registered for see images attach

If you look the tach has 4 wired to it. Power, ground, signal and signal ground. The wire you care about I believe is the white-pink. It is the tach signal wire. If you go to the upper right hand corner you see the tach sensor. Notice it also says w/e4od and w/o? The one without connects the tach sensor to that wire. The one with says it gets the tach signal from pcm pin 36. I believe you said that you used the auto harness so you are missing the tach signal without the pcm. Need to connect the tach sensor tan/yel to that what/pink I believe.

 

[laserjock]

Well crap. He beat me to it.

 

[IDIoit]

Well crap. He beat me to it.

I can read yours tho lol

 

[laserjock]

You can or can’t read it?

 

[IDIoit]

I can.
I cannot read fordhdxltlariat4x4drw's pic, minus the cut out view

 

[FORDF250HDXLT]

Yeah mine uploaded really compressed here to my media album for some reason.Yours is good Mike.

Let me see what happens when I post mine directly to a post too.......

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Oh,holy crap.Way better.Especially when you click on it ^ I might try re-adding it to my album.Maybe I uploaded a compressed copy there by mistake.
You can save this copy here,to your pc and zoom way in too.

 

[laserjock]

Okay. Long as you got what you need. I’m turning in.

 

[IDIoit]

Yeah mine uploaded really compressed here to my media album for some reason.Yours is good Mike.

Let me see what happens when I post mine directly to a post too.......

You must be registered for see images attach

Oh,holy crap.Way better.Especially when you click on it ^ I might try re-adding it to my album.Maybe I uploaded a compressed copy there by mistake.
You can save this copy here,to your pc and zoom way in too.

mucho betorro, grassyass!

 

[IDIoit]

TAN/YELLOW TO WHITE/PINK FOR THE WIN!
THANK YOU FOLKS!

 

[icanfixall]

When my tach "SEEMED TO FAIL" last year it ended up being a failed fuse able link behind the passenger side battery splice made by a previous owner before 1996. Also I found a techa relay near the window washer resivour. For a quick fix I jumperd in to this relay from the battery positive so I could drive my rig. This forum gave me plenty of wire schematics and help too. Might search my posts about failed tach. Even U tube helped me too. That splice was three of those blue crimp line deals in about a 4 inch run attempting to save the fuesable link.. What a foolish idea that was. Sometimes closing the door would make contact enough to work. It drove me crazy looking for an intermittent open circuit too.