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Is it possible to simply bypass the fuel cut-off switch on an 86 E350 without damaging pump or anything?

Bypassing the fuel cutoff switch on an 86 E350 is possible, but it's strongly discouraged and potentially dangerous. While you might not immediately damage the fuel pump itself, bypassing the safety feature removes a critical layer of protection against fire and other hazards.

Here's why it's a bad idea:

* Safety: The fuel cutoff switch is there for a reason – to stop fuel flow in the event of a crash or other emergency. Bypassing it removes this crucial safety mechanism, increasing the risk of a fire or explosion if there's an accident.

* Legal Issues: Depending on your location, bypassing safety features like this could be illegal and lead to fines or other penalties.

* Potential for Damage: While you might not damage the fuel pump directly, bypassing the switch could lead to other problems. If there's a short circuit or other electrical malfunction, it could damage other components in the fuel system or even start a fire.

* Diagnostic Difficulties: The fuel cutoff switch is part of the vehicle's safety and diagnostic system. Bypassing it could make troubleshooting other electrical problems more difficult.

Instead of bypassing the switch, try to identify and fix the underlying reason why it's not working. Is there a problem with the switch itself? Are the wiring harness or connections damaged? A qualified mechanic can diagnose and repair the problem safely and legally. Trying to circumvent a safety feature is a risky shortcut that could have serious consequences.

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