Question about 1997 Chevrolet Blazer
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.
Posted on Nov 16, 2009
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Posted on Jan 02, 2017
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