sounds like your pump maybe working at times and not at others. have you checked to make sure all your wiring is good all the way to the pump and at the connections? could be bad wiring to your sensors too. hitting bumps might be enough to short it.


also I know you said your pump was new. what brand? i bought the wrong brand one time too (don't remember what brand) and did the repair it 3-4 months later thing.


just as a side note, I had a pump that was going out (different from one mentioned above) and could actually get it to turn every three or four times I turned the key to prime it.

 

Hey all, sorry its been a few days. Was just able to test for power at the injectors. I pulled a pigtail from an injector and used a paper clip to put in the lead. Im assuming the green wire is the power wire? I didnt consult the manual to make sure. I have no power to the injector with the key on or while cranking. I did notice that the battery is very weak at this point as well. Whats my next move guys? Thanks

 

Put a full charge on the battery.

01 manual says dark green with orange trace. But, all the power feed wires will be the same color. The ground side of the circuit will all be different colors.

No power at the injectors implies the PCM is not seeing the engine turning. (assuming you get the initial 3 seconds when you first turn the ignition on.... and the fuel pump primes.)

Does that sound accurate?

 

Well, I have fuel at the rail. No reading on meter at all when testing for power at the injectors or coil. I cant hear fuel pump run at the front of the truck. Its not very loud to begin with. Is there anything else I should be testing before thinking about a PCM problem?

 

The asd relay feeds 12v positive to the coil, injectors and 02's. If you are not seeing it at one you won't see it at any of them unless there is an issue with the wiring after the asd. Look at the service manual and check if you have a fuse before the relays. In the older rams they didn't have them. If the fuse is bad the relay will have no power going to it.

 

Fuse 6, 30amp, in the PDC, under the hood. Supplies power to both the control side, and the switched power side of the ASD relay. Verify it is good. If it is, try swapping the ASD relay with one of the other relays of the same size. (horn relay, for instance.)

 

Ok, I did swap the ASD and horn relays the other day. Still no change. I have not looked to see if there is a fuse before the relays and I have not checked the #6 fuse either. I will check that fuse now and let you know what I find

 

The #6 fuse looks good but im not sure how to rest it any other way. Can i use a meter in this or is it all just visual?

 

Should have a nice little window you can look in for a visual inspection. But, could try swapping it with another.... (Is there another 30amp?)

If the fuse looks good, check and see if you are getting power on either side of the fuse socket. (pull the fuse, test each terminal in the PDC for 12 volts.)

 

Is that a key on test?