Question about 2005 Hyundai Elantra

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I noticed on my 2005 Hyundai Elantra that the alternator pulley is not spinning at all times.The belt is spinning and the outside metal part of the pulley,but the part on the inside of the pulley it s

I noticed on my 2005 Hyundai Elantra that the alternator pulley is not spinning at all times.The belt is spinning and the outside metal part of the pulley,but the part on the inside of the pulley it stops and then spins again.Is that the way it suppose to be or the pulley is broken?There is no any signs for not charging the battery ,but everywhere I checked it says the alternator is always running when the engine is on.I am just not sure if in my case there is a switch or sensor that turns on and off the alternator.Thank you!

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The pulley may have failed or not

They have several or at least 3 different names
& type of pulleys on some newer vehicles

Some fancy technology to save energy- I assume

AOD is only type

Decoupler Pulley-- is what they are

I would have to look back a couple months ago, at
my trade magazines, to get into the various pulleys
out there & have no way to get back to you

Without reading the piece on the pulleys again, I believe
they are just variations of a mechanical device,no wires
or sensors,They are speed & torque sensitive

Wouldn't hurt to have it checked out-- if any shop
has even worked on those yet & if that is what you
have on your alternator,I have no idea what is on there

Posted on Nov 25, 2014

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Posted on Jan 02, 2017

Ajkill
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SOURCE: Location of camshaft position sensor on a 2001 Hyundai Elantra wL

The camshaft position sensor is located on the engine near the timing belt cover and under the upper radiator hose.

Posted on Dec 26, 2008

SOURCE: 1999 hyundai elantra just had

hi new belts should not make any noise.if the belts are making noise i would return to the place you had the work done. therumbling/grouling is usuraly from a bad iddler pully/thenshioner pully or a bad wheel bearing.

Posted on Jan 30, 2009

roniecon
  • 6826 Answers

SOURCE: crank case position sensor code 99 hyundai elantra

check timming belt it has jumped a notch

Posted on Jul 01, 2009

  • 6 Answers

SOURCE: check engine light is on in my 2005 Elantra newly maintenanced

Check your engine oil and break oil weather it is in below low level or full, if it has in low level get an engine oil for your car module and pour it. otherwise go to authorized Hyundai service centre and check for it.

Posted on Aug 25, 2009

  • 184 Answers

SOURCE: 2003 Hyundai Elantra GLS. Check engine light, code PO133

Did you use a aftermarket O2 sensor or a genuine Hyundai one? If it's an aftermarket one it may be bad or not as good as the OEM one. See here for more details and other potential causes: P0133

Posted on Feb 11, 2010

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