I couldn't find MAS on my car.
The Alternator makes some squeaking noise when start the car. The noise is gone after it has been driven a little and warmed up.
If it is the plugged Cat how can I clean it? Or do I need to replace it?
I'll spin the wheels with the engine running.
I think it has something to do with the booster/vacuum issue because I think it happened after I bled the brakes. What can I do in this case?

Thanks

Rick