What is the chirping noise coming from when you turn your ac on then goes away when you rev your engine then comes back only when ac is on?
I believe that your alternator may need to be bench tested - when your a/c comperssor turns on (when your a/c turns on) this is a larger draw of required volts for your car, and therefore a larger load on your alternator. I believe that an alternator "struggling" to keep up with "demand" can cause the alternator belt to squeak. It could also be something as simple as a belt slippage - there is extra tension on the belt when another accessory is being used (your a/c). Check the condition of your belt. Think of paint finishes for a moment. If your belt has any "shiny" or "glossy" (called glazed) appearance, or has any cracks in it, then simply erplacing your belt could solve this. But if your belt is in good shape (has a dull or "matte" appearance), then have your alternator bench tested at a reputable auto parts store/mechanic. Another test you could do on your own is to start your car, then while it is running, disconnect the positive lead from your battery. If your alternator is running well, it should easily run your car on it's own w/out the battery. If your car stops running after disconnecting your battery, then your alternator is absolutely the culprit, and needs to be replaced. I am not a mechanic, but these are a few simple checks you can try yourself - good luck!
1. Most likely -- The belt is wearing out, getting loose, etc. Check the belt for glazing (makes it look shiny). Check also the strength of the belt tensioner.. (Take the key out of the car for this check!!) If you can pull the belt more than an inch toward you, the belt and / or tensioner may be bad.
2. The A/C compressor clutch is wearing out. This is not as likely. This would have to be repaired by a professional.
What is making a squeaking chirping scraping noise at belt side of engine on 2001 ford windstar pulley tensioner water pump alternator and power steering pump have been replaced and noise is the same?
Why is there is a tapping sound coming from your fiat punto engine and it increasing as you increase speed what could it be?
2003 Taurus 3.0 engine that has a chirping noise coming from a sensor on top of the engine block right in front of the bell housing What is this sensor for and will it hurt to drive it?
That is the CMP or Camshaft Position Sensor. Driving it can and possible WILL hurt the engine eventually. The Squeaking is caused by the gear train being worn out. The CMP in this engine is tied into the oil pump for the vehicle. If the CMP Geartrain was to fail or seize (the reason why its beginning to squeak.) it will stop the oil pump and no oil will be fed to the vehicle. The…
What is making a squeaking chirping scraping noise at front of engine on a 1997 mercury cougar 3.8L engine Belt idler pulley tensioner pulley water pump and belt have been replaced and noise is same?
Loud knocking banging noise on 350 Chevrolet that comes and goes still drives when making noise but everytime accelerate it starts banging. noise is coming from the motor really hard banging.?
I still have a chirping noise after replacing the belt. Is it recommended to replace the belt tensioner when you replace the belt on a 2003 Cadillac Deville with 70K miles?
In order to tell you that you would have to describe the noise and what the car is doing when the noise is made. Are you idling, driving, just turned the AC on? What is occurring and what is the noise? Idling and sounds worse when AC is on. Sounds like it is coming from the top of the engine. Vehicle has 120k miles
Probably a sticking lifter; put in a can of RISLONE every time you change oil for the next few times; that should do it if it is just a minor problem. A chirping noise can also be a defective drive belt. I haven't heard of a chirping noise before, but I've heard of lifter tapping. If it's just some light lifter tapping, add some Lucas oil stabilizer next oil change. This is really good stuff…