The check engine light came on the other day and i took it in to see what was wrong. They ran a diagnostic test and said that the Knock sensor was malfunctioning. He said i had to replace the knock sensor which would cost about $250.
I'm a little concerned about this because shouldn't they have atleast tested the sensor to check resistence? what if the sensor is fine and there really is a "knocking" problem? I realise that it may be difficult to check the sensor but my car is a
4 cylinder and from what i'm told it appears it is easy to get at.i don't know a lot about cars but simply replacing a sensor that shows a malfunction doesn't really seem like a solution.
Any ideas?