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1st gen Tach with 4.0?


Hahnsb2

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My stock tach reads considerably higher than it should with this 4.0, does anyone know if there is some sort of resistor I can add in or something else than would make it read correctly? I don't want an aftermarket tach since I have a factory one.
 


Hahnsb2

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Bump.
 
shadetree

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What model is the 4.0 out of, and which wire do you have the tach connected to?:)shady
 
Hahnsb2

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94 4.0 out of a sploder sport. Tan/Yellow wire in the 4.0 harness is connected to a DarkGreen/Yellow wire in the B2 harness.
 
Hahnsb2

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Bump. You out there Shady?
 

MAKG

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The EDIS (and waste spark) is going to make it read wrong. 1st gens didn't have either of those. They tripped off the coil primary wire.
 
Hahnsb2

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That makes sense, is there anyting I can do to make it work? I have wide assorment of electronic parts like resitors and such, at work.
 
rickcdewitt

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can you get the sploder tach to fit behind your instument panel with the old school face on it?
 
Hahnsb2

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Nah, they're way different. **** it, I'll buy an aftermarket, will any aftermarket tach work or will the EDIS and waste spark mess with that too?
 

AllanD

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The Tach wire from my EDIS is connected to the tach wire on my 1987 Ranger

I swapped a 1993 4.0 Explorer engine into my '87.

My tach works perfectly and I didn't do anything other than connect it.

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