Loud chirping noise when acceleration pedal is

Your going to have to take the belt off and spin the belt tensioner and listen for a non smooth noises and from waterpump, idler bearing, alternator and ac areas. But most chirping is caused by the belt tensioner jumping around because the tensioner is weak.

If it is a belt noise, sprinkling baby powder on the belt will make the noise go away. Apply liberaly with engine off onto the belt and start the vehicle. The belt may have gotten coolant on it and this will cause the chirp. Also a defective belt tensioner will cause the belt to chirp

Without a general description of what the noice sounds like, squeal as compared to knocking, it is impossible to help you. Engines make a lot of different noises, so try and help by describing noise. I would suspect it is belt related, or tension pulley related as these are RPM variable noises, belts tend to slip when you accelerate and can be quite loud with a serpentine belt as example.
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it maybe the synchroniser which is under the throttle body (and houses the cam sensor)and makes the same noise. use a rubber hose to pimpoint the location of the noise

BAD BELT OR BELT NOT TIGHT ENOUGH

This problem sounds more like your serpentine belt is loose or has become glazed. When you accelerate, the belt can't keep up with the torque of the flywheel pulley due to the drag of the accessories, resulting in a squealing and/or chirping of the belt as it slips on the pulley. This is amplified during turns due to the extra drag of a laboring power steering pump. Try going to your auto-parts store and picking up a bottle of belt dressing, about a buck a bottle. Apply this to your belt according to the instructions on the bottle. This should help your belt regain its "stickiness" if it is indeed glazed. If this doesn't solve your problem, a new belt may be in order. Hope this helps out. If the problem persists after a new belt, reply to this answer and we can dig a little deeper. Have a great day!

If you get the squealing noise even when car is not running, and if noise get louder when you push the accelerator pedal, then it is the serpentine belt.

You may need to put the belt in tension, or to replace it.

Are you sure you don't hear anything like a chirping sound when the engine is idling? Have you popped the hood and listened while the engine was idling? Have a friend sit in the driver's seat while you pop the hood, tell them to press the accelerator and then listen for the squeal. I would bet dollars to donuts the problem is the serpentine belt is worn and needs to be replaced.

I have a very loud squealing noise in my 2003 mazda mvp engine when i accelerate. We removed the belts which would eliminate belts as the problem. And that's that it. If anyone has any info please let me know.
Thank you

Have your fan and other belts checked/replaced!
Rarely but sometimes a can of belt dressing will stop the squeal if the belt's just a little to dry!
Check your oil!
Check your trans and other fluids if you don't think it's a belt!
jackiaria