I have 2003 Chevrolet Malibu 3.1 engine , squeaking noise coming out couldn't tell if it's pulley problem or belt need to be replaced ,so i took off the belt and i put it back on the squeaking noise was gone for one day and the next day noise came back again ,so what do you think it is ??
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If you take the belt off and there is no noticeable in/out, up/down, or side to side movement of pulley and there is no noise when rotating, a new belt may be all you need. Make sure you check ALL of the other belt driven components including idler pulleys and belt tensioner pulley. A worn tensioner can squeak also.
Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet
Impala is on top of the fan shroud. The diagram will be a picture of
all of the accessory pulleys and how the serpentine belt is routed among
the pulleys. This diagram will give you the exact direction for routing
the new belt onto the pulleys. If you cannot find a serpentine belt
routing diagram, take a notepad and pen and draw out the exact routing
diagram of the old belt across the pulleys.
Locate the serpentine belt tensioner. It is located below the alternator
on the left front side of the engine. The tensioner on the 3.4 liter,
3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to
release the belt tensioner. The 3.8 liter engine will require a ratchet
and a 15 mm socket for the belt tensioner. Rotate the belt tensioner
clockwise to loosen and remove the belt from the belt tensioner pulley.
Slide the old belt from the belt
tensioner pulley. Remove the belt from the remaining pulleys and pull
the belt from the engine compartment.
Route the new belt across the
crankshaft pulley first. The crankshaft pulley is the big pulley on the
bottom of the engine in the center. Then route the serpentine belt
across the remaining pulleys as directed by the serpentine belt routing
diagram. Leave the belt tensioner pulley for last.
Rotate the belt tensioner
clockwise again to relieve the tension and slide the new belt across the
top of the belt tensioner pulley. Release the belt tensioner and the
belt will tighten up as the tensioner applies pressure to the belt. Make
sure the new belt is properly seated in all the pulleys.
Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.
if it is a squeak it is the belt if it is a growl it could be a pulley going bad you can better determine if it is a belt or pulley buy taking the belt off and spining the pulleys by hand to see if one has any play or noise if not relpace belt
Whines and squeaks are usually from worn belts. Spray belt dressing on power steering, a/c compressor, and alternator belts When belt noise goes away on particular belt check for fraying and cracks. Relace belt and adjust belt tension as noted.
Sounds like your serpentine belt is dried out.Replace your belt make sure belt tensioner is ok,or you can make sure that it is your belt by using a old candle or belt dressing that you can purchase from your local parts store.While engine is running VERY carefully touch the candle to the ribbed side of the belt and let the wax rub off onto the belt the squeak or chirp should change or go away.Or just spray the belt dressing on per the directions on the can.