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How can oil pressure sending unit affect fuel pressure switch 4.3 engine 92 gmc pick-up?
Wiki User
∙ 13y ago
If the engine oil pressure drops below a specified amount the oil pressure fuel pressure switch will cut power to the fuel pump. Some engine models have two switches and some have one integrated switch. One located down by the oil filter and the other behind the distributor on the engine block.
Wiki User
∙ 13y ago
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