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need help ASAP (crankshaft pulley wobbling...)

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Old 12-30-2009, 11:14 PM
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need help ASAP (crankshaft pulley wobbling...)

crankshaft has been making cricket like noises and has been wobbling and eating belts...
anyone experienced a similar problem and know of any solutions?
is my car totally effed? or is this a minor problem?
help!
 
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Old 12-31-2009, 12:48 AM
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Stop driving and replace it immediately. What's happened is the elastomer material that binds two pulleys into one (making the crankshaft pulley) has started to fail causing the wobble. It's a very rare problem, but it happens. Continued driving could possibly result in engine damage because that elastomer ring serves a crank damper. That wobble could potentially remove it's dampening capabilities and could lead to a catastrophic failure of the crank or bearings.

A replacement OEM pulley is $190. Don't forget to replace the crank seal while you're in there. It's cheap insurance.

http://www.trademotion.com/partlocat...layCatalogid=0
 
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Old 12-31-2009, 12:56 AM
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Its true that the crank pulley is a damper as well...but its not the harmonic vibrations that would scare me. With wobbling crank you will have issues and will blow out the bearings in the crank and the rods will slide and cause catastrophic failure to your engine. Replacement will hopefully fix it, but if not you will have to machine the crank.

PS. I do have a stock crank pulley for sale as well. I'm using the UR lightweight crank pulley.
 
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Old 12-31-2009, 01:02 AM
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THX!
any idea as to how much infiniti would charge me???
im not too familiar with infinitis and i am not feeling too inclined to take it apart myself....
 
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Old 12-31-2009, 01:17 AM
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No idea. Assuming they can fix it just by replacing the crank pulley...I bet they will charge you $250-$300 for parts and 3 hours of labor @ $115/hr. Just my guess. If it were me, I would take it to a Nissan dealership. They charge less for parts and less for labor and use the exact same tools and parts.
 
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Old 12-31-2009, 01:32 PM
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thanks
nissan charges around 115
infiniti 150
checking fee for nissan 115
for infiniti 130?

thanks for your help
 
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Old 01-01-2010, 05:37 PM
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each dealership is different I guess...but, either way Nissan will be cheaper than Infiniti if you can't take it to a mechanic you trust.
 
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Old 01-03-2010, 06:51 AM
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Or if you have a warranty, beat the **** out of it and hope for failure so you can get a new motor! LOL ;D
 
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Old 01-03-2010, 06:15 PM
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^^ haha I like this guy

Just remove your mods first LOL
 
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Old 04-18-2010, 05:20 AM
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Revival.

I just noticed my crank pulley seems to have a slight wobble. I just got my engine replaced last month and have 1k miles on it.

I'll post a video soon.

Not sure if it's normal, but seems scary to me. I'm worried it may waer out the bearings.
 
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