Fuel Pump issues

[tank1000]

Fuel pump under my engine is running, but fuel pump in tank is not working. Why is there two pumps and what do I do to fix my problem? I assume I need a new pump but is there anything else? What are the two censors on the air box?
(2005 rev 1000)

 

[Hold it Open]

There are two pumps on the 1000 sdi. The one under the engine is a low pressure pump that fills a resivoir where the high pressue pump is contained. This pump supplies fuel to the injectors. If the tank mounted pump doesn't work check the wiring and do a voltage test at the pump. If you have power at the pump replace it. It's common for either pump to fail. I have replaced several. Hope this helps you.

 

[hdkawi]

check out dootalk add a lp pump by the battery leave the one under the engine for a spare pics on dootalk and the sensors in the air box temp sensor and air presure

 

[tank1000]

thanks for the input guys think i fixed it i put in new high pressure pump runs fine now going to install pods thats why needed to know what the sensors did i did use a fuel pump for a vortec chev should word same psi and way cheaper

 

[hdkawi]

whats the part #

 

[tank1000]

dont remember the part numb but gm basically only makes two pumps one for a throttle boby lp 15-20psi and one for a direct injection (vortec) truck 96-98 5.7l which puts out 60-65 running pressure dead head pressure exceeds 80psi so pump has enough psi and since it goes through factory fuel regulator should be good and only 114 my cost from lordco

 

[hdkawi]

how much power does use ? did you put a relay to your fuel pumps that sled was not made to run two pumps bad idea by skidoo.

 

[tank1000]

i only replaced hp punp in tank just sayingg there is two types of chev fuel pumps make sure u get the right one didnt change any wiring

 

[hdkawi]

check this out mach 1000 problems - DOOTalk Forums