The mass air flow sensor measures the rate of air entering a fuel-injected engine. The air mass information is necessary for the engine control unit to provide the correct amount of fuel to the engine. The sensor could be bad, a plugged air filter could cause it, an engine vacuum leak can be an issue, and so on.
By any chance, do you know what specific code was found? That would help me.
As far as the noise, if it's gone, great. However, if it is in the catalytic converter, it may come back. Lets hope not. LOL
Also, feel free to ask as many questions as you have. The only thing is if the topic changes. Then we like to start a new thread.
Let me know.
Sunday, November 17th, 2019 AT 6:37 PM