Question about 1991 Hyundai Sonata

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Crankshaft pulley wobbled loose an alternator belt wont stay on...

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Dear friend-as this crankshaft pulley is cast iron it is impossible that it could be bent so you will have to remove it and look for damage inside the pulley and on the crankshaft,if this is not repaired the fanbelt will never stay on.

Posted on Jul 20, 2009

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1 Answer

What would make a belt fall off a 2007 ford fussion or split the belt into?


The split is puzzling. But for falling off, the tensioner must be weak. The pulleys can wobble if the bearings in their center is bad, you will be able to feel roughness.

The tensioner arm is spring loaded. Sometimes there is a wear bar for judging if a belt is stretched. No matter how strong a tensioner spring is, if the belt has stretched too far, there is nothing you can do but replace the belt.

Check the pulley grooves and count them. Some Alternator pulleys have 8 grooves and some have 6 grooves. While the flat faced pulleys are often wider than necessary, the grooved pulleys can quickly cut a wider belt into 2 belts. The Alternator grooves must match the number of grooves on the crankshaft.

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Loud rattling sound top of engine near or below the alternator when idling, goes away if accelerator is pressed


Hello: Remove the serpentine belt, see if the waterpump pulley wobbles/makes noise when you spin it. If thats not it then start the engine, belt still off see if noise is there also while engine is running see if vthe crankshaft pulley wobbles. Also check the A/C compressor pulley (engine off, belt off) spin it by hand and check for noise and wobble. If all the previous is ok then it could be the balance shaft front bearing and or the timing chain.

Oct 18, 2011 | 1998 Buick LeSabre

1 Answer

Crank shaft pulley wobbles but crankshaftpulley is ok .what can cause this?


the bearing is either bad or the crankshaft pulley may be loose, has it been removed lately, has the serpentine belt come off?

Feb 12, 2011 | Kia Optima Cars & Trucks

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After replacing the alternator belt it is ok for a few months then I find it is breaking in half again, I have replaced a few times, the last with the most expensive one I could and it is breaking agian....


You probably have an aftermarket alternator, Some come with the wrong pulley installed. You cannot swap pulleys because the shaft is different. This is a very common complaint for this car. Find an original equipment alternator off ebay or a junk yard, you'll see the difference on the pulleys...good luck...blueamber... I have owned 6 of these cars

Sep 29, 2010 | 1993 Mercury Capri

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THE BATTERY LIGHT CCAME ON AND IT WAS DIFFICULT TO STEER POWER STEERING FLUID IS THERE BELT CANE UNRAVELED NO HOSES APPEAR TO BE LEAKING OR BROKE. HOW DO I PUT THE BELT BACK ON


First check all pulleys for wobble or looseness. If all pulleys are OK, use the below diagram to put the belt on all pulleys except alternator. Put a wrench on tensioner pulley and pull down until the belt will slip onto the alternator pulley. Check that belt is still on all pulleys before starting. If belt comes off again, one of the components is failing (usually an idler, tensioner or water pump wobbling).


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Sep 03, 2010 | 2001 Ford Escort ZX2

1 Answer

Crankshaft pulley has the wobble not spinning in a even manner


Most likely the rubber part of the harmonic balancer has deteriorated causing the twin pulleys to separate. Tightening would not help if this is the case. A replacement would be needed.

Jul 11, 2010 | 2006 Suzuki Grand Vitara

1 Answer

Crankshaft Pulley is loose, belt came off. I can grab it and wobble it. Do I need a new pulley? Any diagrams how to take off?


YEP SOUND LIKE ITS BROKEN.TO MAKE JOB EASIER A HAYNES REPAIR MANUAL WILL SHOW YOU DIAGRAMS AND TELL YOU HOW TO REMOVE CRANK PULLEY.

Apr 18, 2010 | 1987 Jeep Cherokee

1 Answer

Can I change the harmonic balancer (crankshaft pulley) without special tools? It is wobbling pretty bad and causing very loud belt squeak.


yes just loosen your power steering pump to get the belts loose then get an air gun or figure out a wawy to keep the pulley still and it will come right off

Feb 08, 2010 | 1997 Nissan Maxima

1 Answer

Crankshaft pulley Nissan Pulsar '91 N14


Hi your alternator pulley is hold by a nut about twenty mm, chech it it may be lose......good luck

Aug 24, 2008 | 1990 Nissan Pulsar

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