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Re: Ford F750 speedometer not working
Posted to HD/Fleet Forum on 7/14/2022

Got connected to an F650 with a Cummins engine and manual trans. See attached. Red is signal from GEM to ECM. Blue is from sensor/transmitter at back of trans to GEM. Signals move when as soon as clutch is let out. Probably about 4 mph at idle. On the 750 all ... Login to read more.

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