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What would cause the oil pressure to drop to zero seconds after the engine starts and then after driving less than a 100 yards the pressure goes back to normal your ride is a 2000 F150 4.2?
Wiki User
∙ 16y ago
I, like many other people, am having the same issue. Come to find out - it's a faulty oil pressure relief valve. The valves get stuck in the open position, allowing the pressure to read normal while driving or reving, but losing pressure when stopped at idle.
Wiki User
∙ 16y ago
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