how has it been everyone, happy new year. got my truck back and well it's broke of course. pretty sure the fuel pump is shot, cuz I don't have any pressure at the test port. so I want to troubleshoot b4 I pull the pump, but I can't find the a relay specifically for the fuel pump.

 

The relay is in power distribution box (PDC) just south of battery if your facing north. Trans, horn, a/c relays and bunch of assorted fuses in their. Swap with horn relay is a easy check.

 

so I jump out the fuel pump through the relay outlet, I put 12v to socket 5/87 from 12v constant socket 3/30 using a multimeter set on 10amp load, and nothing. I did disconnect the neg batt and also put the multimeter (10amp load) on that to make sure it was working. I thought maybe I would get a high amp reading on the multimeter if the pump motor was locked, but I got nothing. so is that how u u would do it and do I have to replace the pump?
I kind of hope its as "easy" as just replacing the pump

 

Don't think you can use the multimeter as a pass-thru device...... (but, I have been wrong before.)

Are you getting 12 volts TO the socket?

 

my multimeter has a 10a circuit for testing load. so if I disconnect the neg on my batt then use the multimeter to connect the batt - to the trucks neg wire it will power on the truck and tell me the amps that the truck is drawing. at the very least I should have gotten a reading if the pump was drawing power.
p.s. I did use a jumper wire and a gauge on my fuel rail to see if it kicked on, but I thought the amp meter would be "more better". And my relay is clicking when I plug + unplug it.

 

If the pump didn't run with a jumper wire either, need to verify you are getting 12 volts TO the relay. The main feed should be hot at all times. (pin 30) If not, check fuse 3 in the PDC. (20 amp)

 

of course, I have consent 12.5v at pin 30, and I get 12.4 at pin 85 with key on (0 with it off).

 

Making new post. Relay found> thanks