i had a similar problem on a 1990 Chevy 305 with a SERPENTINE BELT. I had replaced my Power Steering pump, when all was said and done it threw the belt off twice. the pwr steering pulley was mounted correctly THE SHAFT WAS WALKING OUT from the pump enough to cause a loud squeal then there goes the belt. I had a defective pump. i know C.I. is way smaller then mine but i hope this helps
Glazed or slipping fan beltBad pulley driven accessory (alternator or water pump)
could be a bearing in the engine, but more likely the alternator belt, if it looks shiny replace, then see how things go.
I have a 2004 c230 and I had a squeaking noise when the engine first started. It was my water pump with uneven wear on the water pump pulley that was causing the sound. I will tell you it could be many different things, but this was my reason.
Glazed or slipping belt? bad bearing in belt driven accessory? i.e. alternator, water pump, etc.
It won't be the engine that's squeaking, it will most likely be a belt, take it to a mechanic to get the belts tightened up.
Some pulleys are made from two metal parts - the inner piece bolts to the crank shaft and the outer piece drives the belt. The two pieces are bonded together by a rubber damper which can become separated allowing the outer to slip on the inner causing squeaks and failure of drive to accessories like the alternator.
Loose or worn belt.
A bad battery will not turn on a check engine light. A bad alternator however will. Have your vehicle checked and see if the alternator is putting out at least 13.5 volts and if so there may be another issue causing the light .
Check for a worn or loose drive belt.
The alternator does the charging and it is controlled by the engine computer.The alternator does the charging and it is controlled by the engine computer.
The alternator is run by a belt connected to the engine. When the engine is running the alternator is turning. The alternator is what produces the electrical current that charges the battery & powers everything electrical while the engine is running. the battery is mainly to start the engine.
on the engine.