98 mitsubsishi galant noise comming from alternator when a/c is on like grinding bearing s and when a/c is off?
when driving while accelerating thier is a grinding noise coming from the alternator sounds like . tried loosening belt and no luck. even when ac is on or off it makes the noise. could it be the alternator bearings . i just replaced it a year ago.
1 Might be the brushes or the bearing time to get another alternator or see if this one can be rebuilt.
2 I would check the cooling fan. It may be warped or broken and not in the same position as it came,causing it to grind up against something each time it comes on and spins.Could be as simple as a missing bolt either on the fan itself or on the part it`s hitting.visually check the fan with the motor off & cold & try to wiggle it along with the the surrounding parts.turn the fan manually to see if it turns freely and isnt bound by wires or somthing else. I learned the hard way that when it comes to automotive issues…Start Simple; you could be making it way more complex than it needs to be. If you have already checked this stuff, try going to autozone.com they have alot of troubleshooting info.that is specific to different makes & models. They have improved the site quite alot and it has some pictures too. AND best of all it`s free.
