Question about Volvo S40

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I have a Volvo S40. The fuel gauge is stuck on empty despite having a full tank

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1. the sending unit in the tank may have gone bad. - you would have to drop the tank and empty it first and remove the sending unit - reconnect unit to car and move the float up/down and have someone in the car with the key on - see if the gauge moves full/empty.
2. the gauge in the dashboard may be bad.
3. a fuse may have blown - check our owners manual
4. the wiring may have a brake in it.

Posted on Mar 25, 2011

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Sounds as though the fuel sending unit is either stuck, or the float is broken. Try tapping the tank with a rubber hammer to see if that helps, other then that your next option would be to pull the sending unit out all together and replace.

Posted on Mar 25, 2011

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