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Everything is driven by the crankshaft pulley at the bottom and is by far the hardest to turn, but it is the driving pulley.
The alternator should turn easily.
The steering pump should turn easily.
The water pump should turn easily.
The AC Compressor is harder.
The Idler and Tensioner should spin freely.
All pulleys should have no discernable lateral movement that would cause wobble. All the pulley should be in alignment with each other. The tensioner should not be TOO tight.
With the belt off, put a wrench on each thing the belt turns. You should even be able to turn the crankshaft slowly, with some effort. Check for play or excessive resistance on the pulleys. An idler or tensioner pulley should spin freely, not wobble, and make very little noise when spinning, like a fidgit spinner, or a scateboard wheel. Some effort will be needed for an AC compressor, less for the alternator, but as long as you don't hear metal to metal scraping, you should be fine.
I would suggest taking off your serpentine belt and by hand spinning the alternator , ac , water pump and any other pulleys to check for bearings going out . If they all spin freely start your car and see if problem persists . Do not run for too long since your water pump will not be circulating water this way .
CHECK SEE IF CRANK SHAFT PULLEY BOLTS LOOSE.IF CRANKSHAFT PULLEY LONG BOLT TORQUE IS FOR 130 FT LBS FOR 1.8L ENGINE. IF YOU HAVE THESE ENGINES CRANKSHAFT BOLT TORQUE IS 174 - 181 FT LBS ENGINES ARE 3.0L 3.2L 3.5L 2.3L 2.5L IF CRANKSHAFT PULLEY BOLT IS TIGHT.THE CRANKSHAFT PULLEY ITSELF BROKEN NEED REPLACING.
That smoke is coming from the belt because, i think your alternator pulley is locked up.Take the belt off and see if you can spin the alternator pulley freely by hand.If it can't spin freely replace alternator.These alternators have a bearing in the center that sometimes seizes up.
take the belt off and spin the pulleys, all of them. they should all spin freely except for the crankshaft of course. the alt and the the water pump and the idler and tensioner pulleys can all freeze up. ac compressor pulley too.
do not add oil to belts. remove belt and spin all pulleys (except crankshaft pulley) any pulley does not turn freely (except crankshaft pulley) is where you will find your problem
The A/C pully is supposed to spin freely until the AC is activated to run.. The cranshaft pully does not. Replace the tensioner pully. The belt has to fit in between the grooves on the pullys.
The pulley's aren't supposed to spin freely with the belt on. The belt connects all the pully's to the crankshaft, which does not spin freely because it is attached to the pistons inside the engine. To turn the pulleys, you have to turn the crankshaft, which in turn moves the pistons inside the engine up and down.
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