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whining noise solved - important info!

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Old Aug 20, 2003 | 11:27 AM
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Default whining noise solved - important info!

well, after tearing into the motor searching for an un-known whinning noise, i could find no problem with it. my oil pressure had been fluxuating opposite the norm, which was more than enough reason for my concern. at this point, i still hadnt found the solution and the car was making a belt whine sound even after i had removed all the belts. the whine would start after about 3-5 seconds of run time, and varied w/ rpm. Op was down almost 10 LBs @ idle. no good.

i'm pretty puzzled at this point, but i had no metal in the oil, so i was pretty stoked about that. i finally bought a new 03 LS6 pump from work, (a gimmick for those of you that dont know, it's the same PN as the rest of out oil pumps.) and after i ported it, installed it and went back to firing it up. no more noise. whohoo!! back in business until i burned a hole in the PS hardline w/ the alternator. apparently grounding 14 volts on thin steel lines, isint a great idea.. grr.. anyway i learned my lesson. and i'll be back in business tomorrow when the line comes in.

just a word to the wise, ALWAYS WATCH YOUR OIL PRESSURE!!! and always dis-connect your battery. (thank God!) i lucked out, because if i were to be driving when this happened, there would have been no way to know why i was eating up motors. and might have re-instaled the same pump again... the old one looks absolutely fine, but it's out of spec, because it performed poorly.i hope this contributes to your technical knowledge guys,
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Old Aug 20, 2003 | 11:53 AM
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Default Re: whining noise solved - important info!


until i burned a hole in the PS hardline w/ the alternator. apparently grounding 14 volts on thin steel lines, isint a great idea.. grr.. anyway i learned my lesson. and i'll be back in business tomorrow when the line comes in.


I have done the same thing, PITA!
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Old Aug 20, 2003 | 05:45 PM
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Default Re: whining noise solved - important info!

Great advice. I guess you were the sacrificial lamb. New ported oil pump to be odered soon!
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Old Aug 20, 2003 | 09:54 PM
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Default Re: whining noise solved - important info!

This is exactly why I always recommend replacing the oil pump (std or ported) while you are in there. Mine only had 5500 miles on it but I replaced it anyway when I did my H/C.

The new ones have the same p/n, but they are built with tighter specs, which reduce the failures that were seen on early years.
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Old Aug 21, 2003 | 10:32 AM
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Default Re: whining noise solved - important info!

well, they're cheap insurance, and the ported ones make a great improvement in pressure over stock. ;D
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