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Pinging after running

Z

Zoro

NAXJA Forum User
Location
Colorado
My truck just started pinging today but only after I shut it off. It still runs great but never even once in the 3 years and 30K+miles I've put on it has it ever done this. I'm sure it's nothing to worry about but why does it do it?

90XJ 4.0, 203K
 
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