Tach input

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Sep 21, 2003 | 08:09 AM

bronco460

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Tach input

Hi all, my question is where does the tachometer get input from?
Thanks

Sep 21, 2003 | 10:07 AM

Jens

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Joined: Oct 2002

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From: Germany

Tach input

The input comes from the ignition coil. Give us the year of your Bronco and we can give your the color of the wire.

in the 80's it was a green/yellow wire.

Jens

Sep 21, 2003 | 10:16 AM

Jens

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Joined: Oct 2002

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From: Germany

Tach input

oh I saw that we are in the Diesel chapter, sorry....

The input for a Diesel tach comes from a sensor which is mounted in front of the injection pump. The sensor counts the rotation from the drive gear....

Jens

Sep 21, 2003 | 11:45 AM

bronco460

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Tach input

Ok, I will look into that. Maybe my sensor is bad. My tach works either a little, or just stays on zero.
Thanks.
Oh, my truck is a 1985 w/6.9. Sorry for the confusion. I had the bronco first.

Sep 21, 2003 | 12:20 PM

Jens

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Joined: Oct 2002

Posts: 834

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From: Germany

Tach input

Hi again,

here is a pic of the sensor:

http://home.t-online.de/home/navySta...achosensor.jpg

the Part number is: E5TF 17B 384 AA and it cost approx. $ 78

Jens