Tachometer not working
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Joined: Apr 2006
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Tachometer not working
1985 f250 6.9 ltr
Where is the tach sensor located? My tack does not work at all anymore. It used to come on when I turned my heater fan on. Don't know if it was a short but I did not notice any other problems with electrical. Is there a way to test the sensor or jest replace it and hope that's what's wrong.
Where is the tach sensor located? My tack does not work at all anymore. It used to come on when I turned my heater fan on. Don't know if it was a short but I did not notice any other problems with electrical. Is there a way to test the sensor or jest replace it and hope that's what's wrong.
Post Fiend
Joined: Nov 2004
Posts: 5,638
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From: Manitoba
Replace the tach sender on the oil fill housing a big 1" nut with 2 wires. Ford only part Engine RPM sensor E5TZ-17B384-A about $50. You can remove and clean it but usually changed later too. You can test it too, hold it in the air away from ferrous metal, using an ohm meter lead on each wire you need DC resistance between 2000-3000 ohms.
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