For it to shift up, it must climb up all the gears just to reach the desired one – this is the same for when the gear needs to go down, it’ll go through each gear until it’s met it’s desired one. Gears Skipping – when the gear change is needed, it can either shift up or down. In this case, you’ll need to head down to the mechanic to get the shift solenoid replaced. The shift solenoid needs to send transmission fluid to pressurize the correct gear – the Engine Control Unit or the Traction Control Unit is meant to send an electrical signal to the shift solenoid and if it can respond at a correct time, this will indicate that the shift solenoid is bad. Shifting Delays – If you’re traveling down the road and you notice that the transmission isn’t shifting like normal, this can indicate that the shift solenoid is bad. If the problem was a bad shift solenoid, you’ll need to take it to the mechanic to get it checked out. From here, you can find out whether the error code was related to a bad shift solenoid or not. Once the computer and car are connected, press the red button on the scanner so it can check everything going on in the engine control unit.Īfter the scan is complete, a professional OBD2 scanner will allow you to find out what the error codes mean whereas a standard one will force you to write down the error codes and look them up somewhere else. Once this is done, you can switch on your car’s ignition and turn all the other devices connected into the car. If the check engine light comes on, you can connect the OBD2 scanner to the OBD connector that is under the steering portion of most vehicles. You can use an OBD2 scanner (View on Amazon) to check what the error codes mean within your car. It also communicates all the possible glitches that happen to them. An OBD2 scanner is a diagnostic system that sometimes comes with your vehicle and it’s used to check the engine and other vehicle systems. If you want to find out what this error code is, then you can use an OBD2 scanner. When there’s a problem in the vehicle, a trouble code is sent to the related unit and this can be diagnosed with an OBD2 scanner. If you find that your vehicle is experiencing any of these problems, you need to head down to the mechanic as soon as possible – not being able to change transmission smoothly can mess up the rest of the vehicle.Ĭheck Engine Light – the best way to know for sure without having to check any symptoms is by looking at the dashboard – if you see that the check engine light is on, this can be a big indicator that there’s something wrong with the shift solenoid so you’ll have to check with an OBD2 scanner. You’ll notice a few gear related symptoms that’ll help you diagnose the problem. If you have a shift solenoid and you want to know if it’s bad, there are a few ways that you can tell. There are also multiple problems that can happen to the shift solenoid that will cause it to fail. Since the Engine Control Unit or Traction Control Unit sends a signal to the spring loaded plunger, also known as the transmission control unit – if it’s not able to open, this will store an error code in the transmission control unit and this will confirm that the shift solenoid is damaged. Depending on the design of the vehicle’s gears, it can control a single gear or multiple gears. It can turn the ground circuit on and off. The Engine Control Module controls the engine by opening or closing the hydraulic circuit using a signal. The transmission fluid then selects the gear needed by pressurizing it – this causes the gear to change as you’re driving. When the wire receives a signal from the Engine Control Unit or the Traction Control Unit, it causes the spring to fling open and this allows transmission fluid into the valve body. Important: If you want to save $100s in servicing, diagnosis, and repair costs, improve your car's performance significantly and increase its value by 1.2x with little effort, download our Beginners Auto Maintenence & Repair Manual now.Įach solenoid has a spring beneath it, and this is wrapped around with an electrical wire.
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