Q: My car is making a noise from around the alternator area,but when the serpentine belt is taking off the sound stops. 2003 Ford Mustang

asked by on

My car is a Ford mustang v6 and there is a noise coming from the alternator area but stops when I take the serpentine belt off.the noise does get louder when I push on the accelerator.would like some advice on the problem.done changed the power steering pump and still have the problem.

My car has 143000 miles.
My car has an automatic transmission.

Hi there - good plan for diagnosis, isolate the motion that is causing the symptom! The noise could be an alternator bearing, or the serpentine belt idler or tensioner pulley bearing. These make noise that is proportional with engine speed (with the belt on of course). If you have a "mechanics stethoscope", you can isolate which of these bearings is going bad. For assistance, I recommend a engine noise inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm this diagnosis, and give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My car is making a noise from around the alternator area,but when the serpentine belt is taking off the sound stops. 2003 Ford Mustang

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Convertible not working.

Hi. If your top will not longer move up or down it can be from a number of items in the system from a fuse, to a wiring issue, to the lift motor. The most common part that I have...

Q: 2009 kia Borrego, low pitched humming noise when i reach 40 mph

It sounds like you may have a failing or worn out wheel bearing. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Both the surface of the...

Q: Air not working after alternator repair

There is a chance that the electrical connector that goes to your AC compressor may have gotten disconnected while the alternator was being worked on; it is in close proximity to the alternator and may have been bumped. I would...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...