tachometer
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Junior User
Joined: Jul 2009
Posts: 67
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tachometer
hey I'm bach I don't want to pay $150 for an aftermarket diesel tach cause this is a gas truck that I put the diesel moter in so I took the one that was in the diesel truck and am trying to wire it in and it reads 650rpm at idle but when you rev it up and it gets to 2000rpm it drops out and wont read properly I put a new sensor and have checked all of my conections over and over I any ideas?
Thanks
Thanks
Laughing Gas
Joined: Jan 2007
Posts: 868
Likes: 2
do the two wires from the factory 6.9 tach sensor go DIRECTLY into the cluster? How does the sensor function (name of it)?
Does one wire FEED power TO the sensor and the other sends signal to the tach?
I'm assuming the sensor gets power from somewhere?
I guess i'm wondering how the whole setup fuctions? Looking to do some testing before spending 75 from my dealer for sensor.
thanks..........didn't mean to hi-jack your thread.
Does one wire FEED power TO the sensor and the other sends signal to the tach?
I'm assuming the sensor gets power from somewhere?
I guess i'm wondering how the whole setup fuctions? Looking to do some testing before spending 75 from my dealer for sensor.
thanks..........didn't mean to hi-jack your thread.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
The sensor is a Hall Effect unit.
Generates it's own power/signal, so yes the two wire go straight to the tach.
If you do a search on "Hall Effect" you will come up with a better explanation than I can give.
Generates it's own power/signal, so yes the two wire go straight to the tach.
If you do a search on "Hall Effect" you will come up with a better explanation than I can give.
