Tach not working - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 1 (permalink) Old 09-18-2011, 06:18 AM Thread Starter
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Tach not working

Hello, so I installed a 2001 24v into my 2003 f-350 that had a 6.0.
I just fired it up this week and everything seems to function properly except the tachometer is not working. The place I got my conversion parts from told me connect the positive wire from the cam and crank sensors together and the two negative wires together then attach those to the two wires on the tach sensor which I did. when the tach didnt work I started by checking voltage for my two positive wires. the reading was 1.7 volts. when I separated the positives one of the wires read 3.5 and the other read 0. thinking the wiring diagrams I had were incorrect on wire colors I checked the 2 negatives for voltage and also got a reading of 1.7. I then separated those two and had 3.5 on one and 0 on the other. now as it turns out both wires that had 3.5 volts went to the same sensor I dont recall if it was the cam or crank sensor off hand. so the other two wires that read 0 volts went to the other sensor,again cant recall which one of the two sensors this was
Anybody have any idea as to why each sensor doesnt have + and - like it should? or any other Ideas on what to check? Oh and the tach sensor/tone wheel is made by destroked I believe if that helps at all. thanks
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