Besides heavy traffic, there's nothing that frustrates drivers more than engine problems. After all, engine issues can give you quite a headache. Aside from experiencing difficulty in driving (if your car is still drivable, that is), you'd also have to figure out what part is causing the problem. And mind you, diagnosing engine issues isn't that straightforward since there are many components that affect engine performance. With that said, you'd have to observe the problems closely in order to come up with the correct diagnosis.
If your engine problems consist of misfiring, rough idling, poor gas mileage, or if it won't start at all, then there's a good chance that it's a faulty RPM sensor (also known as crankshaft position sensor) that's causing the problems.
What's a RPM Sensor?
The RPM sensor is an internal electronic device that measures an engine crankshaft's rate of revolutions per minute. It provides the computer with information regarding the current position of the crankshaft so that engine cylinders can be fired up in the correct order. Because of its particularly important role, the RPM sensor is one of the worst things that can become busted in your vehicle. A faulty sensor results in inaccurate crankshaft position data (or none at all), which can severely affect engine function.
Since you can't repair a broken RPM sensor, you've got no choice but to replace it.
Get an OEM Replacement
The kind of RPM sensor you'll need depends on the type of engine you have (the location of RPM sensors varies from model to model for that reason). That's why it's best to purchase an OEM replacement so that you won't have major issues in the installation process. An OEM RPM sensor should fit perfectly in your vehicle. It's also of superior quality; hence an OEM RPM sensor is the most ideal replacement.
RPM sensors are generally pricey. With that said, OEM RPM sensors will give you the most bang for your buck. How much you'll have to spend for an OEM RPM sensor depends on the kind of sensor that's appropriate for your car's engine type.