Q: AC Compressor Squeal - When 2nd Alternator On or A/C On

asked by on

I'm getting some random squealing when i turn the A/C on or i engage the 2nd Alternator. Especially when either are on and i excellerate.

  1. Is this a compressor exchange or clutch?
  2. Do i need to replace the condenser or can i flush this year?

Any detailed info or professional knowledge and wisdom would be greatly appreciated.

My car has 192000 miles.
My car has an automatic transmission.

You may have a weak or loose tensioner or a stretched serpentine belt. First check to make sure tensioner is in its operating range and not at its limit or the belt will slip when additional loads are on it. If tensioner is in the normal range and belt is in good shape then you need to see if the belt or pulleys have any oils or lubricants on them. Clean off pulleys and replace belt with a new tensioner.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. AC Compressor Squeal - When 2nd Alternator On or A/C On

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: The fuel gauge is stuck on full

Hi there. It sounds like you have either a faulty fuel gauge fault or the fuel sender in the fuel tank is faulty. Does the gauge go to zero when the key is turned off and removed? If so, then...

Q: Disabling the alarm on the 2002 Sebring Coupe

Yes it is wrong. The factory alarm is the part of the main computer of the car. You can't really disable them. You either fix them. You might call a professional and they'll know how to disconnect the parts from...

Q: Temperature Gauge not working after Coolant system work

You may have a clogged heater core that may be prohibiting the outer linings of the heater core to get hot. As you know, the heater core is a series of tubes that the coolant runs through that generates the...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.