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Fuel gauge issueViews : 497 Replies : 2Users Viewing This Thread : |
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Jun 17th, 2022, 15:20 | #3 |
VOC Member
Last Online: Yesterday 23:31
Join Date: Feb 2008
Location: Gloucester
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In my experience if the light is on then the gauge is getting what it thinks is an empty (higher) resistance reading from the in-tank float. If the gauge is reading empty but the warning light isn't illuminated then the more likely culprit is the PCB behind the dash.
I'd suggest some testing using the information from the FAQ as a guide. https://www.volvoclub.org.uk/faq/Ele...augeFluctuates I must admit that I usually just short sensor connections to see if gauges are working but more correctly you should use resistors of the appropriate ohms. One possibility would be the two long contacts in the sender coming loose. I have seen this happen in a secondhand unit that came to me via the mail. This could result in a situation where with the float near the top (tank full) the sender is open circuit (high resistance = empty) and as the level drops it finds a point where it jams across the contacts and gives a misleading, static reading. |
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