OUTPUT SHAFT SPEED SENSOR CIRCUIT
I have a Super Duty F-250, 4WD, 170,000 miles, 7.3 Diesel, and recently it has been acting funny. Occasionaly when I stop at a red light, the speedometer needle begins to jump and climb in speed reading while the Engine RPM begins to idle irradically almost shutting off, but when I put the transmission on park and let off the brake it goes back to normal idle and the speedometer goes back to zero. What could this be? I have previously installed a TruSpeed control box to adjust my odometer due to my oversized tires, and had to disconnect the cable assembly into the ABS system, could that have anything to do with it? I also ran a diagnostic test using an OBD II compliant scanner that gave me an error code of P0722 and P0720 (Output Shaft Speed Sensor Circuit [No Signal]), but I'm not sure what that means. Can you help me?
July 23, 2007.
July 23, 2007.
Check out the related content while we wait for the question to be answered by a professional mechanic.
1999 Ford Windstar mileage: 92,000. Recently we had another new transmission replaced (the second one in less than a year and the warranty had just went out on the first one) in our van...
1 answer • 1999 Ford Windstar • 92,000 miles
2004 Isuzu Ascender 6 cyl Two Wheel Drive Automatic 31,000 miles. My speedometer is not working properly, mostly the problem occurs when braking. The speedometer does not register that ...
1 answer • 2004 Isuzu Ascender • 31,000 miles
1992 Plymouth Voyager mileage: 100,000. My speedometer decides at times to not work at all- when this occurs, the odometer does not turn either. The auto shop found speedometer cable ...
1 answer • 1992 Plymouth Voyager • 100,000 miles
2002 Buick Park Avenue mileage: 54,000. Car runs great. Speedometer does not always work. When it does not work and I am climbing a hill the "check Engine" light comes on. As soon as ...
1 answer • 2002 Buick Park Avenue • 54,000 miles