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Pinging noise from underneath car

This is a discussion on Pinging noise from underneath car within the General Help forums, part of the LSx Technical Help Section category; Hey guys, I'm new here, well to posting anyway. I've got this pinging(?) (sounds like marbles banging around in a ...

  1. #1
    Drks1de
    Guest

    Pinging noise from underneath car

    Hey guys, I'm new here, well to posting anyway. I've got this pinging(?) (sounds like marbles banging around in a glass jar) noise coming from underneath my car. It only does it when I give it gas, and only when the car is in motion. Also seems to do it more when i've been driving for a while, when the car is warm. It's been doing it for about 1 1/2 - 2 yrs now. First I thought it was my cats, had them replaced and and the O2 sensors and it wasn't them. Them I thought it was my Corsa cat back, replaced that with the Loudmouth 2 and it still does it. Anybody have any clue as to what it might be?? It gets to be very annoying. And I know that I shouldn't be doing this but, I do run low octane gas in it. The car is a '01 T/A and is stock except for a ram-air hood, ws6 air lid and a Loudmouth. The car has about 77,000 miles on it. Any help would be greatly appreciated. Thanks guys.

  2. #2
    Junior Member
    Join Date
    Aug 2005
    Location
    virginia
    Age
    55
    Posts
    50

    white
    2001 transam

    Using low octane gas in a car that clearly states in the owner's manual to use Premium = . Your car is detonating. Do a search on it.

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