HELP i HAVE 2002 FIAT ULYSSE DIESEL 1.9 DIESEL AND MY PUMP DONT HAVE ANY VOLTS AND VHEN I PUT HER ON 12 V SHE WORKS--I CHANGE THAT PUMP AND CAR DOESENT WORK AGAIN------PLEASEEE HELLLPPPPP I MUST GO HOMEEE

Is it Under warranty if Not then Take it too A Mechanic and see what He says Then tell the Dealer to fix it !!NOW !!

This must be something related to electric problems.... Looks like you have loosen connection somewhere..... I would check - (ground) on your battery (in Ulysse is under floor in front of passengers seat) and then ground cable leading to fuse box (behind the right headlamp unit under hood).
it also can be loosen fuse, but it would make problem just with one device.... if this won't help, take it to electrician

can you tell me your car model ?

Yes you can. As long as it's a diesel engine and the same model range (Multipla).

http://wiki.answers.com/Q/What_motor_oil_can_you_use_in_your_Buell_Ulysses

First I would check to make sure you have the proper fuel pressure at the pump - you should have 2 pumps - one that delivers from the tank, and a high pressure pump for the injectors. Make sure that both are delivering properly - you may need to prime the pumps for quite some time if air got into the lines. Also make sure the cam / crank sensors wiring has no corrosion and is making proper contact. Between 0 to 300/400rpm the signal can be slightly erratic until the engine is started so I would not worry too much about that.

Have you had the fuel pump output pressure checked....Sounds as if it could be defective.....Pressure should be above 3 .6 bar Or maybe check your battery condition, that may be the problem, but more likely the pump....
Regards Johngee10

How much of engine will I have to strip to get to heating mertrix

yes, sounds like the pully is no good, may have bad bearings in pulley, replace it.

put multi meter on plug at pump, get some 1 to push to see if 12 volts there, put 12 volts to pump to see if it runs.