98 Windstar pings

Light pinging under load just started recently... using premium unleaded gas and have tried STP gas treatment but problem persists. Anything I should look at?
98 Windstar 3.8L 196k
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John M.

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J.W. opined in

remove and clean the MassAirFlow sensor... use pliers then a jewelers screwdriver to remove 2 screws then replace them, clean with rubbing alcohol or electronics cleaner and soft bristled brush.. sensor element is not especially fragile but take care not to bend it.
For pictures, though some info is not true, see the tech articles at tccoa.com. Also a good idea to see if any dust has bypassed the air filter.. clean screen and housing if this is case.
Then change the fuel filter.
That car is not made for premium... wean it off of it. And quit falling for marketing crap. That stuff is for performance and supercharged engines.
Use popular brand from high volume stations
For further info, google this group on subject
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Thanks, I'll try your suggestions.
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John M.

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time.
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