Fuel gauge fell instantly to zero whilst driving. Low fuel light illuminated. Tank full of diesel. Cannot find fuse listed in manual.. Looks like electrical fault due to the instant fall to zero..No other electrical services appear to have failed. I have os yet dismantled flooring to inspect connection but believe that there should be a 12v supply to the sender and a modulated return voltage to the gauge. Before dismantling I would wish to check the approprate fuse..

SOURCE: electrical fault

It could be lamba sensor in exhaust gone faulty you need to get it on a diagnosic com puter really to check as modern engines have lots of sensor to monitor air fuel temparatures etc most garages have them now as all cars have electronic control units to control the running of the engine

Marvin

• 85242 Answers
• Posted on May 05, 2009

SOURCE: low fuel pressure 95 volvo 940 turbo

fuel pump check valve doesn't cause pressure loss, just hard starting cold, the check valve is part of the fuel pump, so to replace the valve u must replace the pump. do not use anything but the orig style pump, here is the part number from THE OE PUMP MAKER AT www.rockauto.com
DELPHI Part # FE0071 PRICE $124.99

SOURCE: volvo 940 se turbo estate 1995 engine cuts out

I would replace the fuel pump relay, and the engine speed sensor. I would need more information to rule one or the other out, but at this mileage, neither part is terribly expensive, and both have been known to cause your same exact condition

SOURCE: fuel gauge problem, Volvo 960, 1995

it is more than likely the sender if you pull out pump you can manually move sender or you can test gauge by grounding sender the gauge should go to full if none of this happens you need a gauge

SOURCE: 2001 Volvo V70-T5 fuel guage malfunction

I had the same problem plus the trunk light was off too. Pull out and wiggled all relays on rear fuse panel. It did not work. Then decided to do the dumbest thing to pull out all the fuses. Pull out #1, not bad. push it back in. The trunk lights lighted. Then check everything. All good.