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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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Fuel Gauge not workingViews : 3439 Replies : 3Users Viewing This Thread : |
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Nov 12th, 2017, 23:52 | #1 |
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Last Online: Nov 13th, 2017 09:30
Join Date: Jul 2012
Location: Kalamunda
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Fuel Gauge not working
Hi everyone.
I recently had cause to remove the fuel tank due to a petrol smell. The fault was a tiny crack on the small right angle plastic bit on the return pipe. Fixed it and replaced the tank. All good. Except the fuel gauge now doesn't work. I have. 1) Removed the pump and put a multi meter on the sender unit contacts, and it reads perfectly when you move the float up and down. 2) cleaned the contacts on the plug and on top of the fuel pump. 3) My son has the proper Volvo OBD and computer programme. We have tested the gauge and it works perfectly, 4) I have looked carefully at the connecting plug for broken wires and can see nothing. All I did was remove the tank and replace it. :? Can anyone please offer any suggestion as to what I can do next. I'm stuck. Thanks in advance Phil |
Nov 13th, 2017, 18:29 | #2 |
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Last Online: Nov 15th, 2022 21:34
Join Date: Apr 2010
Location: London / Essex
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I was going to suggest most of the things you have already mentioned that you've checked, so it is a bit odd. It's either a wiring problem somewhere along the way to the instrument cluster, or that the actual gauge in the instrument cluster has gone faulty. I know it does not make any sense, as you have not been anywhere near it, but from what you have checked already, this is the only thing left to check. You could check for a reading with your multimeter at the actual connector that plugs in the instrument cluster and see if you are getting a signal. This way, you can narrow down where the problem might be.
For wiring diagrams, see here 2000_S40_V40.pdf 2001_S40_V40.pdf 2002_S40_V40.pdf 2003_S40_V40.pdf 2004_S40_V40.pdf
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Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba
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May 16th, 2019, 23:42 | #3 |
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Last Online: May 17th, 2019 00:20
Join Date: Apr 2019
Location: Port Alberni
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04 Volvo S40 1.9 lt Fuel Guage
Low warning light always goes off after start up, Fuel guage works mabye 50 %
of the time. I have replaced fuel pump assembly, Same problem, Does the low warning light and fuel guage get their voltage from the same wire? I have inspected the instrument cluster and wiring,,, All look good Is there a relay that supplies voltage ? Is it possible the relay has bad points? I have been trying to find a wiring diagram but no luck, Any help would be appreciated Wayne |
Dec 8th, 2022, 21:54 | #4 | |
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Last Online: Apr 12th, 2023 19:27
Join Date: Feb 2020
Location: Swansea
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2004 S40 fuel gauge issues
Would you mind reposting the link to the wiring diagrams for a 2004 S40? I’ve had a new fuel pump fitted and the fuel gauge issue has now gone from intermittent to near permanent. Thanks in advance
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