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Ford Explorer Community - Maintenance - Modifications - Performance Upgrades - Problem Solving - Off-Road - Street
Explorer Forum Covers the Explorer ST, Explorer Sport, Explorer Sport Trac, Lincoln Aviator, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Ford Aerostar
I have a '91 Explorer.
During the summer (when the outside air temp is greater than 100deg.) I get a mild pinging when cruising down the highway. If I let up on the gas or step on the gas, the pinging goes away. The engine temperature is right where it normally operates even in the winter...