Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Fuel Level Sensor: Testing and Inspection



Checking the fuel gauge float arm position







With the pump placed on a level surface, the distance between the surface and the bottom of the float should be 0-3 mm.

The sensor resistance should be:
Tank empty, float in bottom position: 50 ± 1.5 ohms.
Tank full, float in top position: 425 ± 6.5 ohms.