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Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks. Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac, Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar. Featuring H.I. - Human Intelligence.
Any updates? See below please
I have a 1994 Ford Explorer that has a "new" catalytic converter and also had the modulator valve (I think that is what it is) replaced about a year ago. It has started "whining" when I drive and I am hoping someone has an idea of what to do. I can add...