Is Whining Normal? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-09-2004, 01:08 AM   #1
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Default Is Whining Normal?

I recently replaced my EGR valve, changed the plugs and wires, o2 sensor, and air filter. Now I hear a whining noise when I accelerate. Is this good or bad. I have heard turbo chargers whine but dont know if superchargers are suppose to. Another question; What oil do I use for the supercharger and what is the procedure on changing the oil?
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Old 06-09-2004, 02:51 AM   #2
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The SC should whine some with the stock airbox, expecially more so with a new air filter. Can you tell what area the whine comes from?

You need a 4.5mm allen wrench for the oil plug. Some tubing to siphon out the old oil, and two or three bottles of SC oil to do a good flush.
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Old 06-09-2004, 03:10 AM   #3
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I just checked under the hood and the supercharger is whining. Now here is another question. I seen a picture where the guy plugged off his boost solenoid. What effect does that have?
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Old 06-09-2004, 03:18 AM   #4
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You mean the drive end is whining? The oil is low, or the bearings have gone bad. The plugging of the solenoid stops the computer from limiting boost. You shouldn't plug it, but should remove the lower vacuum boot from the bypass valve actuator. Bend it back towards the little black box next to it and put it on the empty vac post. It may have a little foam filter on the post, remove it for the vacuum boot.
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Old 06-09-2004, 09:36 AM   #5
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Quote:
Originally Posted by jwikoff99
should remove the lower vacuum boot from the bypass valve actuator. Bend it back towards the little black box next to it and put it on the empty vac post. It may have a little foam filter on the post, remove it for the vacuum boot.
Mine whines also.. but I have new filter.. new */C oil.. and gutted airbox

Err... got pics?
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Old 06-09-2004, 02:25 PM   #6
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See how that vacuum boot double back on itself instead of attaching to the bottom vac post of the actuator? Do that.
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Old 06-09-2004, 02:41 PM   #7
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Quote:
Originally Posted by jwikoff99
See how that vacuum boot double back on itself instead of attaching to the bottom vac post of the actuator? Do that.
don't know if it'* my comp or not.. it'* rex'd
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Old 06-09-2004, 02:42 PM   #8
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Dang Cardomain. Let me see if I can fix it.
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Old 06-10-2004, 10:19 AM   #9
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DAmm.. car domain rex'd on my pics too.. just wonderin I would like to confirm.. can you put the arrow beside it?
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Old 06-11-2004, 02:19 AM   #10
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