I have a 1998 Buick Ultra with aproximately 65k miles. It runs
great but at idle while in gear at a stop light, there is a noise which is hard to describe except to compare it. It sounds like a mixture between a diesel idling and the valve noise older 4 cylinder motorcycles made in a very low idle. This only occurs when the the vehicle is warmed up and idle is below 700rpm at idle in gear. I just changed to Mobil 1 oil to see if it was valve related and there is no change and it may be louder (of course I am listening very closely now). Above idle no noise and performance is not affected nor gas mileage (still around 27 28 on the highway). I have heard the pulley on the supercharger may be the culprit. Any help will greatly appreciated as I don't want expensive repairs later if a little maintenance now can prevent it. |
someone told you that the pulley can be making a noise? im curious as to what they told you can be wrong with the blower pulley.
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[img]smileys/smiley16.gif[/img]I hear the same problem, I have a 97 3800 SC series II in a 1988 Fiero GT, the engine is turned 180' so the rear is at the front. The noise i hear sounds like its coming from inside the valve cover, i checked and replaced the EGR so it not it. Its definetely not the supercharger. I f you ever find out it will save me time looking.
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there is really no way that a pulley can make a noise, unless the belt is slipping...
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