Skip the auto shop - Our mechanics make house calls

Q: Screeching serpentine belt when the a/c is on. Is this a problem with the serpentine belt?

asked by on

Hi Joshua, I have a question about my wife's 2003 dodge neon. Recently we drove it from Nevada to California and back, and on the way back, the car started screeching very loudly when the a/c was on, or the car was in idle. Now that I am back home., if I start the car it instantly starts screeching until I barely press the acceleration pedal then the sound stops unless I turn the a/c on. I replaced the timing belt myself and this problem is still there. My question is, is this a problem with the serpentine belt? Or is it the alternator failing( the check battery light is on)

My car has 130000 miles.
My car has an automatic transmission.

Hi there. There is a problem with the alternator or a/c compressor clutch pulley. Check the pulleys out on each item and see which one is creating a heavy load or a skipping feeling as if the bearing is seizing up. The serpentine belt needs replaced for it is already burned from the pulley pressure. If you need further assistance with the screeching noise, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Screeching serpentine belt when the a/c is on. Is this a problem with the serpentine belt?

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: Belt keeps comming off at ps pump replaced pump and tensioner

The most common cause of these belts coming off is the belt alignment is off. Using a straight edge or long ruler put it against the pulleys and see if one is out of alignment. The PS pulley may not...

Q: Truck will not get over 2000k rpms when in gear but when in neutral or park it will rev wide open.

Hi there. It is quite possible that your ECM is restricting RPM or the source of your problem; especially if you replaced it and it wasn't reprogrammed or updated by a dealership. That's really the only thing I can think...

Q: Irregular revving

Is your Check Engine Light on? That may indicate that there is a diagnostic trouble code (dtc) stored. The code may help pinpoint which component requires further testing. Sometimes a dirty idle air control valve will stick during operation causing...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...