The MAP sensor is an important part of a car's operating system. But lots of things can make it go bad. Here's how you'll know when it's going.

Monitor the engine temperature to ensure it is at the correct level, especially after running for a while. Decide whether the thermostat needs to be replaced based on your findings ...

If you have an older car that didn’t come from the factory with all of the important gauges, or you own a new car that you’ve improved enough that you need better readouts for things like water ...