1990 740GL fuel gauge sending unit

5ft24 · Post by **5ft24** » 23 Sep 2014, 16:08

Just put a new fuel pump in several weeks back, and now the gas gauge started only reading half tank... regardless of how much gas is really in there. SO, I need a new sending unit, but am finding they all come with a pump... Does anyone know of a part number for just the sending unit itself without the pump?
Thanks

93Regina · Post by **93Regina** » 23 Sep 2014, 16:48

5ft24 wrote:gas gauge started only reading half tank

Part book only shows complete unit: 3547205...part number is 3547205

My 940 always reads full, so I use the odometer-trip meter to keep track of it; if that would fail, I'd use a GPS unit; if that would fail, I'd fix it.

5ft24 · Post by **5ft24** » 23 Sep 2014, 19:29

I'll just use the odometer for a while. Cheapest price I found is $249 and free shipping from Marietta Volvo

93Regina · Post by **93Regina** » 23 Sep 2014, 21:46

5ft24 wrote:I'll just use the odometer for a while

I think a local Volvo owner installed a pump on a Regina 745, and he screwed the float pooch; but he removed it again, and got it fixed.

It has to be reinserted correctly, iirc.

5ft24 · Post by **5ft24** » 05 Oct 2014, 17:39

Finally pulled the unit again. Must have bumped it going in the last time, as the 2 sections of the sending unit tube had separated. Got it back together, checked with an ohm meter, reinstalled and all is working right