Give me your opinion as to if it sounds like the speed sensor gone bad?

Tiny
RICK4767
  • MEMBER
  • 2000 FORD TAURUS
  • 1.3L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 154,000 MILES
A light started flashing on the dash, right of the speedometer with an exclamation point inside of a gear. This happened while I was driving and the car dropped into 1st gear. Until then I have had no other problems with the transmission. Can you please give me your opinion as to if it sounds like the speed sensor gone bad?
Saturday, July 18th, 2015 AT 7:10 PM

4 Replies

Tiny
OHYEA
  • MEMBER
  • 153 POSTS
You need to get the vehicle scanned for codes, can't just guess off the powertrain malfunction light. Because the Powertrain of a car consist of the engine (with exhaust system), transmission, drive shaft, suspension and the wheels
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Tuesday, April 13th, 2021 AT 7:52 PM
Tiny
RICK4767
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  • 2 POSTS
I checked the fluids on everything. The night it happened I googled it and they told me about the speed sensor but I will take it and let someone run a check on it. This is a really awesome site. Thanks again
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Tuesday, April 13th, 2021 AT 7:52 PM
Tiny
OHYEA
  • MEMBER
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If the speed sensor was bad then your speedometer would not work properly.

With the speedsensor Being attached to the crankshaft of the vehicle's engine, the engine speed sensor is meant to assess the speed at which the crankshaft spins. The device is basically a metal disk that has a serrated (toothed) circumference. In addition, there's a stationary device containing a magnetic coil, which acts as a standard for the measurement. When the crankshaft spins, induction current is set up around the magnetic coil. The serrated edge of the crankshaft obstructs the produced magnetic field and this is recorded. This is what gives a measurement of the amount of current produced, which is outputted as the speed of the vehicle's engine.

The engine speed sensor becomes an important device because it provides a real value for the engine's speed. Since every car has its own specific speed limit, this device is put into use when checking the overall performance of the car.
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Tuesday, April 13th, 2021 AT 7:52 PM
Tiny
OHYEA
  • MEMBER
  • 153 POSTS
Some ways to pinpoint bad speed sensor would be

* Transmission revs higher before it changes gears
* The car's transmission engages into overdrive late and sometimes will never go into that top gear
* Brakes are sometimes harder than normal when coasting
* Speedometer behaves erratically or sometimes does not work at all
* The check engine light comes on intermittently and sporadically when accelerating
* The overdrive on/off light blinks on and on for no apparent reason
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Tuesday, April 13th, 2021 AT 7:52 PM

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