Skip the auto shop - Our mechanics make house calls

Q: My speed sensor went bad twice in 10 days

asked by on

I replace it cause it wasn't shifting right and the speed gage wasn't work. It work for 5 day and went bad again

My car has 140000 miles.
My car has an automatic transmission.

A: Hello. The problem you're experiencing ...

Hello. The problem you're experiencing with your speedometer may be related to the speed sensor cable that attaches from the sensor on the outside of the transmission to the actual speedometer on the car. About 80 percent of the time when I've done this job, the issue was not only the speed sensor, but the cable as well, which is why it's typically recommended to replace the sensor and cable at the same time.

However, this doesn't explain why the sensor failed five days later. The only explanation I can offer for that is one of two things. First, the area around the speed sensor was not cleaned completely, allowing dirt or debris to embed itself under the sensor during replacement, or it's a malfunctioning part. I think the best thing you can do is remove the old part and replace the cable as well. You may want to contact an experienced mechanic in your area to inspect the shifting issue as well as any other problems with your speedometer so that a correct diagnosis is made before it is repaired. Maybe they'll see something you overlooked or missed during the replacement of the speed sensor.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: The ABS light, emergency brake light and traction control light are on along with the unresponsive speedometer

Failure of one or more of the wheel speed sensors will cause all of these conditions to happen all at once. The wheel speed sensors and the DSC control unit will need to be checked and fault codes read out...

Q: ABS lights on

The ABS system issues and codes causing the light to appear can be diagnosed and repaired with many aftermarket tools. You are not required to go to the dealer. To save time and money, a qualified technician, such as one...

Q: Part identification

Hi there: Thanks for writing in to YourMechanic.com. Unfortunately, we're not equipped to have images placed into the Q & A. If you provide a link to the image, give a full description of the make, year and model of...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...