At 11-15 psi, you are very low...I think the factory switch is about 7 psi? I am just speculating, but I think you probably had legit failures.
Forget the bypass, drive it and see what the gauge says when you get your next failure. The factory sensor is probably open at zero psi, and then pulls that single wire to ground when pressure is achieved. With the engine off measure the resistance of the switch to ground, it will likely be 'infinite'. If that's the case, ground the wire.
You might need to fool the ECU via a latched relay connected to the starter wire, then powered off when the key is off. But I doubt it...
I see some 0W40 in your future.
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Last edited by 1990C4S; 07-28-2025 at 09:39 AM..
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