When starting car starter makes a screeching noise, starter is new

You just need to shim it properly.

sounds like your starter needs shimmed and/or replaced or you have a flat spot on your flywheel. the sound your hearing is from the starter motor gears not properly aligning with the flywheel gears and quite literally grinding material off of one or the other. if you continue to force it your flywheel will need replaced if not already

sounds like it needs to be shimmed

you need shims on the start. some of the older gm cars need shims when a new starter is installed

If the starter did not have a shim dont put one in if the start is make the nosie without the shim the new starter is bad (ase)certautotech

shim your starter

Sometimes starters come from the factory with shims to make sure there is correct clearance between the starter drive gear and the flywheel, have the person who installed check to see if there was a shim or shims on the old one and wether they put on shims on the new one.

Your starter bendix is not kicking far enough to mesh with the ring gear, replace your starter and shim it is it take shims.

Make sure that starter wears a condom.

If you meant that the starter makes a high-pitched whine but does not turn the engine, that starter is bad. More specifically, its drive (the "Bendix") is bad.

If the starter makes a screeching noise as it turns the engine, like it is working too hard and is irritated about the situation, you need to shim the starter. There are shims available at the parts store that fit around the mounting bolts, between the starter and the block. They are used to ensure that the starter drive gear teeth are not too close to the ring gear. If they are too close, the starter has to work much harder as it forces the teeth to mesh.

If you meant that the starter makes a whining noise for a short while after you start the engine, don't worry. Many starters do that.

If you meant that the starter makes a loud whine constantly after you have started the engine, it is staying engaged. It is either bad and that is the source of the problem, or there is another problem (like incorrect shimming) that caused it to stay engaged, and it is now bad. The same gear reduction that allows a small electric motor to spin a big heavy engine can work in reverse if the one-way clutch in the starter drive goes bad, and the high speeds that the starter guts would be subjected to if this happened would lead to self-destruction.

is this a screeching sound of it is then, you may need to adda shim between starter and the mounting surface. Double check all wiring to starter and make sure they are not broken especially wire to the bendix of the starter (starter selonoid). Get back top me if you need more help. Thanks for using FIX YA