4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

underdrive pulley help?!!

Old 02-20-2007, 05:28 AM
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red97gt
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Default underdrive pulley help?!!

just got my pulleys installed and the crankshaft pulley is vibrating!? and makes a pretty noticable woble noise when at idle. is this normal??? please help!
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Old 02-20-2007, 06:36 AM
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POISND U
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Default RE: underdrive pulley help?!!

No it isn't. What kind did you get?
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Old 02-20-2007, 07:15 AM
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red97gt
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Default RE: underdrive pulley help?!!

march perfomance black painted steel
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Old 02-20-2007, 07:36 AM
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POISND U
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Default RE: underdrive pulley help?!!

I'm thinking they're defective. I've heard of piggybacks being so outta whack the stock damper can't keep them even. Take them back or sell them on ebay and get some Steedas.
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Old 02-20-2007, 07:54 AM
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gsxrstang69
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Default RE: underdrive pulley help?!!

I wouldnt drive the car much until you figure out a way to fix the problem. A friend of mine just focked up his engine when his was doing this.
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Old 02-20-2007, 01:42 PM
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domesticlover
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Default RE: underdrive pulley help?!!

i put mine on and they did it to. they were steeda so i took them off and i had them in my garage. and some kid came up and wanted them and he traded me and x pipe for them. soooo i dont have the problem anymore. i would maybe recomment a new set of them, did your OE pulley do this? hope not lol
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Old 02-20-2007, 02:47 PM
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oxfordgt
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Default RE: underdrive pulley help?!!

Improper install. Take it off and reinstall. Use the longer bolt and a big washer to start the bolt to make sure it is on straight, then use the crank bolt and tighten down to 60ft lbs, lossen half a turn then tighten to 35 ft lbs.
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