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2001 f350 7.3 overdrive light flashing and speed odometer jumping and not working at times.

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Hi there,

The overdrive light flashing is either the detection of a shorted EPC (Electronic Pressure Controller) or a defective sensor. Bad shifts are a sign of the EPC, while good perfrormance would suggest a bad sensor. Also a quick check is the wiring conections being dirty/comtaninated. Cleaning and di-electric grease could fix your connections.

Hope this initial info helps.

Posted on Jul 30, 2009

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