![]() If all of these checks do not explain the sensor issue, your transmission may indeed need to be taken apart. If the fluid is clean, you need to take a quick look at the resistance in the overdrive sensor to make sure that the clutch is not slipping. Checking this and replacing the contaminated fluid with clean fluid will immediately help in setting the sensor right. Sometimes, due to internal leaks, there might be some contamination with oil and the filter. The sensor showing you the O/D off sign is an indication that it is malfunctioning. A very common occurrence is that the transmission fluid is contaminated and this is directly related to the sensor acting strange. However, taking it to the mechanic to fix your entire transmission will likely cost you around $1000, almost a third of what you paid for the transmission itself!īefore you do this, we strongly recommend that you take a look at the transmission fluid. Your mechanic will have to take the transmission apart, diagnose the issue and rebuild it. Solution: This is a clear case of something wrong with your transmission and is a no-brainer. Trying to accelerate must result in the truck immediately jerking violently (possibly coupled with a groaning noise) and then going at a very slow speed. When you stop your truck at red lights, getting it to start again might be an issue. This sign on your dashboard is coupled with the truck itself not accelerating properly. You notice that there is an O/D off sign on a sensor on your dashboard. This is possibly the most frequent issue to arise with the Ford E4OD automatic transmission. Reason 3: Transmission fluid needs to be changed Fixing this leak will also, in turn, fix the intermittent overdrive issue that you are facing. The leak is what is causing the valve to malfunction back and forth. Sometimes, the valve could be larger than it is supposed to be, causing an internal leak. In this case, the issue is with a valve that is found in the Torque Converter Clutch. ![]() There is also a chance that there is nothing wrong with your Throttle Position Sensor. This is also something that you will have to consult a professional for. Fixing the Throttle Position Sensor will automatically fix the problem with the Torque Converter Clutch. This is also what is causing the Torque Converter Clutch to constantly engage and then subsequently, disengage. This is located on the Throttle body and is one of the reasons why the engine is revving up and down unnecessarily. What often happens is that the Throttle Position Sensor is acting up. Solution: The reason why this is happening is that your Torque Converter Clutch (TCC) is slipping in and out while you’re driving your vehicle. Additionally, you may note that the truck will shift to overdrive in a few gears, like 1, 2, or 3.īut in other gears, it just doesn’t shift to overdrive: resulting in loud clunking noises or a rough jerk of the vehicle. What happens in this problem is that you are sometimes able to shift to overdrive, and sometimes struggle with doing the same thing. This is another very common problem with the Ford E4OD automatic transmission. Reason 2: Torque Converter Clutch Causing Intermittent Overdrive The most you can do is diagnose the issue correctly on your own, so you can have a good estimate of how much it will cost you to either get the gears fixed or your misfiring cylinder replaced. Unfortunately, there’s not much you can do on your own with this one. If you’re only struggling with switching to overdrive when you’re driving at 45mph and not at a slower or greater speed, then it’s just one gear that is faulty and acting up. Solution: In these situations, it is almost always a misfiring cylinder. You should also check if you’re facing issues with switching to overdrive when you are driving in other gears. Your first course of action should be to check the transmission fluid, and if that is perfectly fine then you know that the gears are slipping. When in overdrive, accelerating will cause your vehicle to suddenly jerk violently, similar to what would happen if you encountered a pothole. Sometimes what will also happen is that you’re able to easily shift to all gears except overdrive. If you’re not able to shift to overdrive when driving your Ford, the most reasonable explanation is that your gears are slipping when you’re trying to do this.
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