noomg
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I'm not even sure what's going on here or what you're trying to accomplish. When you switch off the ignition the fuel pump keeps running? The pump should shut off immediately when the ignition is switched off. If the pump stays on it's been incorrectly wired. The oil pressure takes a long time to fall? So what. With the engine off that's a no harm, no foul. When I shut off the motor I never look at the gauges so I don't know if that's normal or not. When oil is added to the motor it takes a lot longer for the oil to reach the pan than in most engines maybe that has something to do with.
Short of making sure the fuel pump is correctly wired I'm not sure what advantage will be gained by installing an oil pressure switch. But as always your car, your choice.
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