Davy

A couple weeks ago when I charged my batteries up, I cleaned the cables real well. They aren't new but they are clean and getting good contact.Can you explain how to do a voltage drop test? Thanks.

Okay, next chapter. Last weekend I switched all my tools back over into the truck with the new lift pump. Monday I drove about 175 miles and it cranked up and ran fine all day except when I cranked it on the job to come home. I had to hold the key over probably 5 or 6 seconds before it cranked. That's unusual for this truck. Like most Dodge/Cummins trucks, it usually fires right up. I drove home, probably 25-30 miles and it ran fine. Once I got home, I pulled up in the driveway and let it idle for about 10 minutes while I moved my other truck over and did a couple things. I got back in and it started missing and cutting out but didn't die. I revved the engine up to about 2000 RPM and held it there and it cut in and out and missing. That's when I loaded my tools back into the other truck. This afternoon when I got home I tried to crank it and it wouldn't. The new lift pump was running, I could hear it.I guess the first thing would be to get a pressure gauge and make sure the Fass pump is working properly. I'll bet it's the VP. Any comments are appreciated.

Okay, at first I couldn't tell exactly where that was, after clicking on the pic and enlarging it, I see it's hooked up between the filter and VP. I will look into getting a gauge real soon.

Yes, I was thinking the same thing about the gauges, 30 lbs is just right. Where does your fuel gauge connect to the fuel line, just before the fuel pump?

Well, I opened the three lines, bumped the starter twice, tightened the lines back since fuel was coming out of them and it fired up. It did some spit and sputtering but purrs like a kitten again. Next will be a pressure gauge and a donation to this forum. Thanks for all the help.

Thanks, Dripley. I'll try that. Which fuel gauge do you recommend?

Okay, I finally had time to get back under the hood, my job is getting in my way. I got my batteries charged back up and this evening I bumped the starter to get the pump going, and it did. I opened up the drain valve and a lot of fuel come gushing out. That Fass pump really puts it out. I went ahead and tried to crank it for about 10-15 seconds a couple times and it still won't crank up. I have a couple questions.I'm hoping my VP isn't damaged. Can I assume it isn't since a code didn't show up saying it is damaged?What would be my next step to getting the VP primed?

Thanks, I have bought and installed a Fass DDRP-02. I have not installed a gauge yet just because I'm not sure which one I want or need. The pump seems to be running fine. Tomorrow I will open the drain line and see if fuel comes out.

Thanks for the help. I had to work late thru the week and didn't have time to get my head back under the hood. I put it all back together and bumped the starter and just like you said, the pump started up and run for about 25 seconds. I read somewhere to do this several times, so I did. I cranked on it and it still won't crank. I ran down the batteries so I got my jumper cables out and hooked them up to my other truck and kept trying. It still wouldn't crank. Is there something else I need to do? Is there a way to know the VP is good or bad without a mechanic hooking a computer to the truck? The other day I clicked the key on and off 3 times within 5 seconds and the following came up on my dash. PPCU P1693 Pdone . Then it said PECU P0230 Pdone. I don't know what that means.

Thanks for the quick replies. I will try bumping the engine over to see if that will start the pump for 25 seconds. I know I clicked the key to the run position but not sure if I bumped the starter or not. No, I don't have a gauge yet. I just recently found out a few months ago from a mechanic about a weak lift pump will cause the VP to go out. I can definitely see the need for a gauge. That happened to me 20,000 miles back, both pumps went out. I can only hope the VP didn't go out again this time. I'm on my third VP. The first one went out at 98k. The second one went out at 334k. It has 354k miles now. I drive a lot of miles and I don't have many complaints about this truck. Still has the stock clutch and water pump. I've never added oil to the engine between changes, it doesn't use any. 21 to 22 MPG every tank unless I'm pulling a heavy trailer and it will drop to 17 to 17.5. Thanks again for the replies, I'll let you know the out come.

Thanks for such a great forum, I'm having a problem with my lift pump. First off, I have an 02 Dodge / Cummins. It has 354k on it and has gone thru 4 or 5 lift pumps over the years. The pump is located on the side of the block. The Dodge dealer wants 1100 bucks to install the retro conversion pump in the tank and after doing some reading, many folks are saying to just buy the Fass DDRP-02 replacement pump, so I did. With the pump all hooked up, it won't work. It seems to be an electrical problem. Now I'm thinking that when my truck stopped running the other day, it wasn't the pump at all, but this electrical problem I'm now having. When I plug a 12V tester in the connector that comes from the engine, the tester light comes on for a split second and goes off when I click the key on. That's all it does. When the pump is plugged in and I click the key, nothing happens at all. I tested the pump with 12 V's and it runs fine. I took the fuel "system system" relay out and plugged one of the others into that spot and that didn't do any good.Is there another relay somewhere that I'm not finding? Thanks.