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Whining noise from exhaust, low oil pressure

This is a discussion on Whining noise from exhaust, low oil pressure within the Internal Engine forums, part of the LSx Technical Help Section category; So here goes my second thread, and it's not what I really wanted to be asking about. Today on my ...

  1. #1
    Junior Member
    Join Date
    Jan 2010
    2002 Pontiac Trans Am WS6

    Whining noise from exhaust, low oil pressure

    So here goes my second thread, and it's not what I really wanted to be asking about.

    Today on my way home from work I noticed that my oil pressure was low. It was hovering around the 20 mark on the gauge. I look at my gauges on a regular bases and it is generally around the 40 mark at idle so this was obviously lower. I parked it for a little bit and checked the oil level and all is well. So I went back after several hours to see if the oil pressure would come back up and sure enough it did. But then I started to hear this whining noise come only from the exhaust. It was not coming from under the hood or anywhere else, only from the back. I shut it off and started it again to see if the noise was still there and it was. I shut up off and started it a third time to see what it would do with some throttle but the noise went away. I am leaving it alone for the rest of the evening, but I was just curious if anyone has any ideas as to what this could possibly be. I really didn't want to tear into the motor this soon into my ownership of the car, but this doesn't sound good. The car has 53,000 miles on it if that matters at all.

  2. #2
    Member Speed_kills_WS6's Avatar
    Join Date
    Feb 2008
    Anderson, SC

    2002 TA WS6 M6

    If you're driving your car for a good amount of time, it's normal for the oil pressure to drop because the oil thins with heat. My car has gotten that low before during the summer in red light to red light traffic. As far as the noise, think the curiousity of your oil probably made you look for something wrong. I wouldn't worry too much if its not leaking and the car seems to be in good mechanical shape.

  3. #3
    Member Sayed_000's Avatar
    Join Date
    Oct 2008
    Middle East - Bahrain

    Camaro 2000 SS M6

    have the same issue .. i realized that my oil bump O-ring went out ..

    time for new one tho ..

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