fuel pump

Can anyone tell me why my '91 740 wagon has only one fuel pump? Everything I have read and researched about this vehicle says it should have two, but I have traced the fuel line, from tank to injectors, and can only find one. I am perplexed.......please help. Thanx :)

If you have the Bosch fuel injection system, then you have one under the drivers seat area beneath the car, and the other internal in the fuel tank. If you have the regina fuel injection, then only one pump. If you think you have the Bosch, look at your fuse tray, should be a separate fuse for the intank pump. You can pull it while the engine is running and hear the change in noise. The car won't die. Its a prepump to take some of the strain off the main pump.

If your coil is a standard shape, the round kind, then Bosch system. If it looks more square, regina.

Thanks so much aleekat, we dont have a dealer around here to help and the parts places were as stumped as I was. :-)

Bookmark this site. (http://216.160.8.21/FAQ/700-900/) The absolutely best info site for 700/900s. Educate yourself, and you won't have them $80 an hour mechanic's fees. Here also is an online parts that carries volvo stuff. The best prices I have found.
FCP (http://www.fcpgroton.com/about_us.htm)