Wining sound when starting but when engine warms up it stops

might be dry drive belts try sum wd40 spray on belts an see if this quietens them if so might be better to have them replace as a sign of wear

It sounds like you have a "flooding" problem, where you are getting too much fuel on the warm start. It takes more fuel to start a cold engine than a warm one. By holding the pedal the pedal to the floor, you are telling the computer to do a "clear flood" operation, and that lets you start the car. The culprit is probably the Coolant Temperature Sensor. If this is faulty, it will tell the computer that that the coolant (thus the engine) is much cooler than it really is. This results in the engine flooding when warm. It may also run rough at idle after warm start since it is still getting too much fuel. You will also notice a massive loss of fuel economy. Replace the coolant temperature sensor.

Sounds like a vacuum leak ,,causes lean condition ,can cause internal engine problems ,

sounds like it could be your TPS sensor, or your fuel sending unit, that once it gets warm it becomes faulty.

The sound could also be from the fuel pump. This comes on a cold engine. The way to sort it is to change your driving technique. Do not accelerate too much till the temp gauge starts showing the change. for the first minute or two if you do not accelerate too much then you may not hear the sound the rest of the day. Let the engine/fuel pump warm up a little and then you drive your normal self.

Check your belt. Belts will whine when they're worn, cracked or glazed. I hope this was helpful. It's not normal. Take care and God bless.

Bryon

Does the noise come from the engine or transmission, Pull the dipstick tube from the transmission when it is warm and smell it for a burnt smell.Check oil dipstick for any water or white paste.

in a cold climate the engine trans needs to run for a bit but i would recomend bringing to the daeler for warranty. i would explain to them that its a new problem. they will help.

sounds like the thermostat stickng as when engine gets cold the choke will start workin again, causing the over reving or your electric fan is on all the time "over cooling" the engine

Sounds more like your ignition module is getting hot and not working. I'd go there first before replacing the ECM. You can remove the ignition module and most NAPA stores have the ability to test them for you. Make sure they test it at least 5 times. This way it'll simulate starting and stopping.