List Of Loud Engine No Check Engine Light References. Web reasons why your check engine light is on, but car runs fine it’s possible the gas cap is loose or leaking. If your engine is making strange noises, then it might be because of a clogged muffler, faulty spark plugs, or damaged bearings.
As one of the more expensive repairs related to the check engine light, replacing a faulty catalytic converter might make you fidget. Web the check engine light — more formally known as the malfunction indicator lamp (mil) — is a signal from the car's engine computer that something is wrong. Web when the check engine light starts flashing, you know something serious is occurring.
