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Replacement Automatic Transmission Speed Sensor Information

Choose from top brands including: Dorman, Genuine, Mitsubishi Electric, Original Equipment, Beck Arnley, Replacement, AC Delco, SKP, Vemo, OEM, ZF, NGK and DIY Solutions.


Automatic Transmission Speed SensorIn vehicles that are equipped with an automatic transmission, gears are changed through a series of complex motions within the automatic transmission unit. These are regulated by transmission fluid and a series of valves. But how does the transmission know when to switch gears? In the first automatic transmissions, this was done by sensing fluid pressure fluctuations, but in modern vehicles this is all regulated by the transmission control unit--a small computer with several data inputs.

A transmission control unit uses information provided by the engine control computer as well as from sensors in the transmission. One of these is the automatic transmission speed sensor. Simply put, this sensor counts the revolutions of the transmission to determine the optimum rate of speed.

Too fast and it will signal that the gears need to be changed. This sensor does the same job as a driver monitoring the tachometer and making sure the RPMs stay within range. On occasion you want an auto part for safe driving or functional concerns, and sometimes it's just something to indulge in; either way, acquire the highest level of reliability you're able to swing. When you purchased that vehicle, you had an asset that could be with you for the long haul; supplement your decision with the most reliable new parts. When you order from our team of specialists here at PartsGeek.com, you can feel confident that you are choosing the most premium parts and the lowest price.

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Replacement Automatic Transmission Speed Sensors
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Automatic Transmission Speed Sensor Information

The Delphi Automatic Transmission Speed Sensor measures the speed of a wheel or drive axle and sends the information to the Engine Control Unit.


Delphi

The Automatic Transmission Speed Sensor is a detection device that measures the speed of a wheel or drive axle and sends the information in the form of an analog voltage signal to the Engine Control Unit. To replace a defective sensor, go to PartsGeek for the Delphi Automatic Transmission Speed Sensor. Delphi sensors maximize engine and transmission performance by monitoring engine, battery, transmission and fuel parameters such as air/fuel ratios, evaporative emissions, torque, and temperature. Delphi is a developer of breakthrough sensing and actuating solutions to help optimize emissions control, fuel economy, and drivability.


The Dorman Automatic Transmission Speed Sensor measures the speed of a wheel or drive axle and sends the information to the Engine Control Unit.


Dorman

Dorman Automatic Transmission Speed Sensor
The Automatic Transmission Speed Sensor sends signals to the speedometer to indicate how fast your vehicle is traveling, regulates the flow of fuel and ignition timing, and operates your cruise control. Because the speed sensor affects the performance of several systems on your vehicle, various signs may indicate it is not working. Some of the problems that might result from a faulty speed sensor are hesitation, roughness or sporadic jumps in your vehicle's transmission when you try to shift gears. If you experience any of these occurrences, it may be time to replace your speed sensor with a Dorman Automatic Transmission Speed Sensor, available from PartsGeek. This direct fit replacement unit features Dorman engineered quality enhancements and is backed by a limited lifetime warranty.


The Mopar Automatic Transmission Speed Sensor measures the speed of a wheel or drive axle and sends the information to the Engine Control Unit.


Mopar

Mopar Automatic Transmission Speed Sensor
The Automatic Transmission Speed Sensor is a detection device that measures the speed of a wheel or drive axle and sends the information in the form of an analog voltage signal to the Engine Control Unit. A faulty speed sensor can result in hesitation, roughness or sporadic jumps in your vehicle's transmission when you try to shift gears. If you detect such phenomena while driving, it may be time to replace your sensor with the Mopar Automatic Transmission Speed Sensor, available from PartsGeek,


Replacement automatic transmission speed sensors often fail and lead to abnormal driving conditions.


Replacement

Replacement Automatic Transmission Speed Sensor
The Replacement automatic transmission speed sensor is an important part that keeps your transmission running smoothly. Problems with gear shifting and hesitation can result from a bad automatic transmission speed sensor, making your ride unpleasant and frustrating. Restore the quality of driving with a Replacement automatic transmission speed sensor from PartsGeek.com, so the problem will be fixed for good. Automatic transmission speed sensors are one of those small parts that you don't often think about, but which can cause serious driving problems that are easily fixed with a high-quality product.


Automatic Transmission Speed Sensor

Don't replace your whole transmission due to a faulty sensor. Automatic transmission speed sensor issues mimic some of the nastiest transmission problems. The difference is that sensors are pretty cheap to replace when compared to the hundreds of dollars you spend on other breakdowns in the system. If you're lucky, all you have to do is replace your speed sensor to kick your car back into high gear.

The complex hydraulic valves in your automatic transmission only work when they have accurate data about how hard the engine is working. Your AT speed sensor supplies that information to your transmission control unit by measuring rotational speed of the shaft.

We offer a 30-day return policy to protect your purchases from us here at PartsGeek.com, so you have absolute confidence in your choice. We take pride in bringing you options from the best manufacturers like Mitsubishi Electric, Dorman, Mopar, ZF, Genuine, AC Delco, ATP, Beck Arnley, Auto 7 and Vemo. We carry millions of parts in stock at great discount prices. You don't have to wait for what you want because of our quick fulfillment process, so order your part now.

What is an automatic transmission speed sensor?

Your AT speed sensor is a tachometer that contributes data to serve a variety of purposes:

  • Transmission operation
  • Tachometry or speed displays on the dashboard
  • Cruise control
  • Fuel efficiency tuning

The primary function of your automatic transmission speed sensor is to count transmission RPM for the purpose of determining the optimum rate. The automatic transmission uses this reading by switching gears to maintain an acceptable shaft rotational rate. Its function is similar to an experienced driver listening to the pitch of an engine for the perfect time to shift.

How much is an AT speed sensor?

Expect to pay somewhere between $25-150 for your new sensor. This is relatively low compared to the costs of other transmission problems, especially considering all the trouble a failed AT speed sensor causes. Make sure your sensor is compatible with the control unit installed in your vehicle.

What are the symptoms of a failed transmission speed sensor?

Symptoms of a bad sensor depend on your make and model. Some vehicles have broad duties assigned to their automatic transmission speed sensor. Others only use the data for transmission functions, such as torque converter lockup. Look for problems with the transmission:

  • High revving before gear shifts
  • Problems getting into high gears
  • Transmission warning lights illuminated on the dashboard

If you have any of these issues, then go ahead and do some computer testing to see if you have a bad AT speed senor.


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Some of our Customer Reviews
Very Satisfied
Reviewer: Donovan Scarlette

quick service

1997 BMW 528i Automatic Transmission Speed Sensor

Very Satisfied
Reviewer: Matt

The part was as described and was an exact fit to replace the original AT Speed Sensor. We were quoted at over a $100 for the part alone from multiple sources, partsgeek.com made this service very affordable. I will look for my parts from partsgeek.com from now on.

2006 Mazda 6 Automatic Transmission Speed Sensor

Very Satisfied
Reviewer: Lvcaddydude

Exactly what I needed for cheaper than eBay! Thanks!

1994 BMW 740i Automatic Transmission Speed Sensor

Somewhat Satisfied
Reviewer: daryl

perfect fit,a little rust on the pin, but it wips right off

2002 Chevrolet Impala Automatic Transmission Speed Sensor

Very Satisfied
Reviewer: speed sensor

This part is exactly what I needed and it makes my shifting much smoother than before

1999 Mitsubishi Galant Automatic Transmission Speed Sensor

Very Satisfied
Reviewer: input speed sensor

Was very affordable and shifting is much smoother

1999 Mitsubishi Galant Automatic Transmission Speed Sensor