Sensor

1997 DODGE DAKOTA
214,000 MILES • 5.2L • V8 • 4WD • AUTOMATIC
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AUSTINRAS
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  • 5 POSTS
I received the code po720 which is the speed sensor, the speedometer is going crazy and its shifting weird . I changed the speed sensor and it is still doing the same thing and it is still showing the code what should I do?
May 10, 2016 at 3:56 PM
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CARADIODOC
  • ✓ASE Certified Mechanic
  • 34,321 POSTS
  • ASE Certified Mechanic
Diagnostic fault codes never say to replace parts or that one is bad. They only indicate the circuit or system that needs further diagnosis. First you have to rule out grounded or cut wires, stretched or corroded connector terminals, and things like that. Also, I cannot remember for sure, but you might have two speed sensors.

The next step is to watch the sensor reading on a scanner during a test-drive. That can provide a clue to the cause of the problem, but you have to have access to a scanner.
May 10, 2016 at 4:06 PM
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