Strange fuel crossflow
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Cross-Country
Joined: Aug 2023
Posts: 77
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From: CA
Strange fuel crossflow
Hi,
Changed out midship fuel module due to the rear tank crossflowing when running the rear tank. New issue has now come up. Front tank selected for use and it is draining the rear tank. I can select rear tank and it will crossflow into front tank. I tried an old module plugged into the connector for the front tank and it energized the pump and showed different fuel levels by moving the fuel level rod, The truck will die with disconnecting electrical plug from the front tank when selected. When the front tank is electrically disconnected and the back tank is selected, it will run. What am I missing? What could cause the siphon effect? Thanks
Changed out midship fuel module due to the rear tank crossflowing when running the rear tank. New issue has now come up. Front tank selected for use and it is draining the rear tank. I can select rear tank and it will crossflow into front tank. I tried an old module plugged into the connector for the front tank and it energized the pump and showed different fuel levels by moving the fuel level rod, The truck will die with disconnecting electrical plug from the front tank when selected. When the front tank is electrically disconnected and the back tank is selected, it will run. What am I missing? What could cause the siphon effect? Thanks
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