How Long Does a Transmission Speed Sensor Last?

The transmission speed sensor measures the RPMs of the shaft of the transmission. While the engine is running, but not moving, then the input shaft of the transmission is not moving either. When the input shaft moves, the transmission speed sensor reads this motion and delivers this information to the control module. Furthermore, while the input shaft is moving, the vehicle is moving, so the input shaft is rotating at the same RPMs as the engine. The speed of the vehicle depends on the input momentum and the present gear ratio, while the speed of the input shaft is related to the speed of the vehicle.

Over time, the transmission speed sensor can go bad due to wiring issues or just outright failing due to it constantly being used every time you are driving your vehicle. If the sensor is magnetic, it can go bad from iron sticking to the tip of the sensor, which will cause an inaccurate reading. In this case, the sensor may not have to be replaced as the sensor can be cleaned off. Yet, only a mechanic should make that determination because there may be damage to the electrical part of the sensor.

Normally, the transmission speed sensor is diagnosed with a scan tool which is read by a mechanic. If you suspect your transmission speed sensor needs to be replaced because your vehicle seems run at high or low RPMs, contact a professional mechanic so they can inspect your vehicle and read any error codes that come up. Reading the error codes is the most definitive way to determine if your transmission sensor speed is to blame.

Since the transmission speed sensor can go bad and fail over time, it is important to recognize the symptoms before it completely fails so you can have it replaced.

Signs your transmission sensor needs to be replaced include:

  • Erratic RPM readings

  • The needle not moving at all on your RPM gauge

  • Hesitation when you shift gears, either manual or automatic

The sensor is an important part of your transmission and your vehicle running smoothly, so this repair should not be put off. Have a certified mechanic replace the failing transmission speed sensor to eliminate any further problems with your vehicle.


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Recent Transmission Speed Sensor Replacement reviews

Excellent Rating

(70)

Rating Summary
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Bobby

27 years of experience
88 reviews
Bobby
27 years of experience
Dodge Durango V6-3.7L - Transmission Speed Sensor - Charlotte, North Carolina
He was on time kind and very knowledgeable he is a really good mechanic and had a game plan already when he arrived Mr.Bobby was more than I expected 
Lexus GS300 - Transmission Speed Sensor - Charlotte, North Carolina
Bobby arrived early, called and confirmed the appointment, explained all of the services and he was courteous, professional, honest and his integrity was much appreciated.

John

27 years of experience
1019 reviews
John
27 years of experience
Land Rover LR3 V8-4.4L - Transmission Speed Sensor - Galveston, Texas
John was very professional and experienced in fixing cars. I made the mistake of diagnosing the problem and the part, I was wrong. I highly recommend having John diagnose the problem with the car first visit and taking his advice on the next steps to fixing the car or truck. I rated John four stars because he did an outstanding job of helping me with a 2008 LR3 with over 200K miles. These cars are high$$$ maintenance and the extent of the work needed to be done is best spent and placed into a trade-in on a new car.
Chrysler Sebring - Transmission Speed Sensor - Bacliff, Texas
Great service , arrived on time with everything needed. I will be using him in the future.

Andrew

25 years of experience
150 reviews
Andrew
25 years of experience
Dodge Ram 1500 V8-5.2L - Transmission Speed Sensor - Monroe, Georgia
Andrew was great, professional, courteous and very helpful. I would definitely recommend to my friends
Lexus IS300 - Transmission Speed Sensor - Jonesboro, Georgia
Mr. Elphic was very professional. He called and asked if he could arrive sooner than expected, which was definitely a plus. Upon arrival, he confirmed the services he would be performing and I supplied the parts. He finished in a very timely manner and communicated other repairs needed in the near future. All old parts were given back to me boxed up and the area was clean as if he never performed any work. I was skeptical of using this online service but I wish i had known about it sooner. The price was outstanding and the work is excellent. There's no hassle and no up-selling. Mr. Elphic was very friendly and professional and I'm definitely going to use this service from now on. I can't imagine ever going to a garage/shop again, unless it's something major.

Brandon

18 years of experience
275 reviews
Brandon
18 years of experience
Dodge Ram 1500 V8-5.2L - Transmission Speed Sensor - Stone Mountain, Georgia
Very quick and was able to diagnose another problem just by listening to the engine. I think Brandon is a great mechanic.
Chrysler Town & Country - Transmission Speed Sensor - Hoschton, Georgia
Brandon is very knowledgeable, HONEST, and a TRUE professional. A well-known "Christian", family-owned since 1961 transmission SPECIALIST quoted us $4500 for a brand new tranny in a vehicle with 97,000 miles on it as their ONLY solution AND after their suggested tow operator charged me $90 to go 9 miles. Ended up being an $18 senor which Brandon replaced and saved me literally THOUSANDS of dollars. I will recommend ypurmechanic.com to EVERYONE I know. From the customer service rep when I initially booked the appointment, to their confirmation and follow-up, to the service provided by Brandon.... "This one goes to 11"...!!!

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