Q: Car not starting and AC making a loud sound

asked by on

My car will not start, though I think it is probably the battery. Additionally, the air conditioner makes a loud sound when it is on, and the car jerks sometimes when being driven.

The battery should be fully charged and then load tested to see if it is indeed faulty. The AC compressor needs to be checked for normal operation, also a set of AC gauges placed on the system and a performance check run. Fault codes should be read out of the engine computer to see if there are any faults relating to the rough running condition. You may want to enlist the help of a mechanic, like one from YourMechanic, who has the equipment and expertise to diagnose your car not starting and loud AC noises.

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. Car not starting and AC making a loud sound

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: Engine died suddenly with no warning.

The engine may have lost spark or fuel pressure, or the timing belt might have broke. The ignition switch may have an intermittent open circuit which can cause stalling. If the vehicle can start back up right away, then I...

Q: I have a 2006 nissan altima 2.5s......when im driving my temp will go all the way up to high but drop down to the normal area when

Hi there. Does the engine boil over with steam and coolant coming out from under the hood? It sounds like it could be an electrical problem with the coolant sensor/gauge circuit or a possible mechanical problem. Is the coolant full?...

Q: I have a 2009 Scion xB and replaced the alternator. The engine is slightly shaking drove it around and the car was turning off on

Hello, thank you for writing in. As to the alternator wires, we cannot determine if they are connected correctly without an inspection. A weak electrical supply would cause the engine to run poorly. The air conditioner may or may not...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...