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tachometer is off


Joined
Oct 27, 2009
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Location
Palm Coast, Fl
Vehicle Year
2011
Make / Model
Ford
Engine Size
2.3
Transmission
Automatic
i have a cheap little aftermarket tach that my friend gave me i hooked it in the wire off the coil and it seemed like it only read half of what the motor was really running and then i looked at some more forums and it said to tap it into the tan and yellow wire in pin 48 and i also did that and it seemed like it was reading double lol now i dont know what to do any help would be great
 


graff104

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Mar 17, 2009
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Location
Oklahoma
Vehicle Year
1994
Make / Model
Ford
Engine Size
3.0
Transmission
Automatic
Does it have a switch on it for the number of cylinders? I know some do and that may have something to do with it.
 

TomB1269

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Dec 5, 2008
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Capital District NY
Vehicle Year
2002, 2005, & 2
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All Fords
Engine Size
3.0L/4.2L/5.4L3V
Transmission
Automatic
Is it for direct ignition systems. Direct ignition fires on compression & exhaust stroke, therefore causing standard tachs to read 2x as fast.
 

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