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Fuel level sender Escort Cosworth

A float lever is mounted in the fuel pump unit, which forms a variable resistance via a sliding contact and sends a signal to the fuel gauge and fuel warning light.

Since it is a sliding contact, the circuit board can wear out over time and then interrupts the signal to the displays.

A typical sign is the fuel gauge sporadically dropping to empty while driving. At first it usually happens when the tank is half full and only for a few seconds, but the more wear and tear progresses, the longer the gauge stays at empty.

As an inexpensive repair solution, the circuit board can be replaced with a new one which is available exclusively from Cossieparts.

Price is 22.- sFr per piece

For orders please contact us by email.

Often the contacts corrode or

the housing on the pump plug melts,

There are also spare parts available for this.

Comes as a complete kit with 1x plug outside and 1x plug inside,

new crimp connectors and new seal.

Price per plug kit is 25.-Fr

Symptoms of the fuel gauge and their causes:

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The warning lamp and fuel gauge each have their own signal line, but a common sliding contact. This makes it very easy to narrow down errors.

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Fuel gauge shows empty, but warning light is off:

-Cable break between tank and instrument.

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Fuel gauge shows full, warning light is off:

-Short circuit to ground signal line to instrument

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Fuel gauge shows empty, warning light is on:

-No ground or circuit board worn through.

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Fuel gauge shows correct value (over reserve) and warning light is on:

-Cable break from tank to warning module

-Poor ground connection

Wiring diagram fuel sender Escort Cosworth
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