Top Problems of Jeep Wrangler (TJ) Speed Sensor and Their Causes
Did you know that just like your body, your Jeep Wrangler (TJ) has "nerves" within its system? Yes, you read that right! Take for instance your Jeep Wrangler (TJ) speed sensor. It detects and reports speed vibrations to your vehicle's "brain," which is actually the on-board computer (OBC). After the magnet on the sensor measures how fast your Wrangler's wheels are rotating, it will then send signals to the computer so that the OBC can adjust the shifting of gears and the torque conversion accordingly. Although the speed sensor's job is simple, its location near the wheels' spindles makes it vulnerable to wear and tear. To help you troubleshoot problems before they go out of hand, here are the top signs of Jeep Wrangler (TJ) speed sensor failure and the reasons behind them:
Speedometer suddenly stops working
Since the speedometer tells you of your vehicle's actual speed, this dashboard component relies on the speed sensor for the needed information. Consequently, if the speed sensor is not working, your Wrangler's speedometer will also cease to function. In some cases, the speedometer doesn't really stop working. Instead, it just shows signs of malfunction. You will know if your speedometer is acting up when the needle jumps or jerks back and forth even if your Jeep Wrangler (TJ)'s speed is not really changing.
Special features malfunction
When your Wrangler's speed sensor goes bad, its effects will also manifest on your vehicle's special features. A speed sensor breakdown will primarily affect the normal function of the traction and stability control systems. Moreover, since your road surfer's OBC can no longer tell the accurate speed, cruise control regulation also becomes impossible.
Transmission and braking problems
If your Wrangler's transmission system shows signs of hesitation and roughness, or if it jerks or jumps everytime you shift gears, you probably have a speed sensor problem. Aside from these symptoms, a faulty speed sensor can also result in your Wrangler's abnormal braking, especially when you are driving in low speeds. If you will not repair or replace your vehicle's busted speed sensor, you might end up with damaged transmission and braking systems.
Other troubleshooting tips
In addition to what were already mentioned, rough idling, intermittent power loss, low fuel economy, and frequent stalling are also indicators of a bad speed sensor. All these problems can be attributed to a dirty Jeep Wrangler (TJ) speed sensor. But, these could also result from a broken speed sensor due to frequent tire removal.