Questions & Answers for: alternator humming noise

...humming noise can be heard. I replaced the alternator, as I used a stethescope to hear grinding noise from there, apparently not the culprit, or have an additional problem. I suspect the transmission ...

...humming noise starts in the engine I suggest that you open the hood (when the engine is hot) and try to pinpoint the source of the noise. Check the power steering pump- these sometimes make a noise ...

Engines do not produce humming noises.... more likely a worn bearing from a pulley. Have your Alternator tested it may be under stess and not working properly thus giving a humming noise. All the best

...pump bearings or the belt. also if there is fault on the alternator or AC pulley there can be humming. finally if the noise is heard while the car moves , then check on wheel bearings and axle ends

...alternator runs great no problems humming noise doesnt change pitches when turning or going straight This noise could be the alternator, water pump, power steering pump, idler pulley or tensioner ...

...humming noise. when i start and raise the engine few seconds the humming noise stop. Any solution. Thank you power steering pump make humming noise and alternator with bad shaft bearing make

...humming noise coming from power steering pump or bad bearing on alternator. Use long screwdriver , place it on your ear with the hand held handle and place it on pump it will transfer the noise back ...

...alternator. The installation of noise filter design for purpose in the positive side of the power lead will resolve this. These noise normally have a high value inductor and may also a small ...

it is very loud humming noise and when driving you can still hear it but not as loud. It still made the noise after I took the serp belt off. bad/loose belt, bad/going water pump. bad/going alternator

...humming will increase with acceleration and decrease as I slow down. If the noise appears to come from under the hood/engine area, suspect a bearing in one of the accessory pulleys to be causing the ...