Question about 1997 Ford Thunderbird LX

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Pings under heavy acceleration,has gotten worse over time. It used to happen only on hot summer days. High test fuel makes no difference. I suspect injectors at 97,000 miles. I don't think there is a knock sensor on this 4.6 and timing is out of my control. Plugs are rather new. plug wires & O2's original.

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  • orionspur Sep 24, 2009

    Top engine cleaner and EGR check seems to zero right there. Some of that EGR system is way down in there where I fear to tread, but I should be able to clean or replace the screen. I had the vacuum port cleaning done on my 92 3.8 so I'm familiar with that. The tech said Chevies tolerated the treatment quite well but Fords not so much.
    I will try this out, thanks mic0707.
    Paul Hill



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There is a product out there that is called top engine cleaner that you run thru a SMALL vacuum port I used it all the time for this problem at the GM dealerships I worked at.You could also make sure your EGR system is not blocked and is working properlly.

Posted on Sep 24, 2009


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