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94 E-150 351, 108k miles. Speedo needle vibrates back and forth slightly at higher speeds. When I enable cruise control, car surges and slows to the movement of the speedo needle. Any ideas?
94 E-150 351, 108k miles. Speedo needle vibrates back and forth slightly at higher speeds. When I enable cruise control, car surges and slows to the movement of the speedo needle. Any ideas?
Replace the speed sensor mounted on top of the differential (assuming the wiring is OK). Note that NAPA applications all showed a mechanical, transmission mounted unit. Had to hit the dealer for this one.