New fuel pump question
hey guys, got to upgrade the fuel system. Plan on doing this sat, at the same time as my clutch. I wished i wouldnt have let the dealer do the "upgrade" fuel pump in the tank! I feel like most will sugg. doing FASS and this or that and may me right. But im doing what worked for me on my 99 dodge for 120,000 and putting a holley black on the frame rail. It does 140gph freeflow at 14 psi. Sounds like its in the same press. range that cummins intended for the cp3 to recieve. The factory pump and the retro-fit pump both did about 12-13 when new they just dont live long. So same or little more press. with prob. a lot more volume. Question is i plan on running it WITH the intank pump for now, as i dont know how else to plumb the suction in the tank. I want the fuel gauge to have no affect as it works well now. I think ill replace the factorys pump relay to a larger one and run both from there, holley pulls 4 amps factory one prob. less. When yall upgraded to your prefurred system if you didnt also use the in tank pump how did you grab the fuel from the tank? Thanks
I installed the BD Aux kit on mine as you can see. If I had it to do over again I would go with the Holley Blue. Did a lot of reading and I believe you want the Blue, but I've been wrong before, look at my Carter pump. I had the Carter in for 10 months and it died, may not have been the pump, may be dirty fuel. But it was warranty for a year, but I had to pay the shipping to and from Carter. Shipped it to them and they called me and wouldn't ship it back without a master card number and they charged me $25 to ship. What a rip-off. Only cost me $9 to ship it to them. OK, I'll stop crying but I do think the Holley Blue is a better pump.
I ran the same as Al until mine died and I threw it in the trash. They send a harness that plugs into the factory one up by the fuel filter housiing where the stock lift pump was. You basically remove your stock lift pump and put a fitting on the housing and then run the new harness back down to the Carter on the frame rail like Al has his. How you're going to do it is going to be a new realy with 12 volts right form the battery to the new pump and just use the stock in tank wire for switching the relay. That would be the best way for the way you're going.
FWIW, I wish I had went right to the FASS unit as I would have been about $200 richer.
FWIW, I wish I had went right to the FASS unit as I would have been about $200 richer.
Thanks for the advise, thats what ill do, the factory relay looks to small to carry both pumps so ill upgrade it and the feed wire from batt. I hope its like my 99 under there as far as fuel line. Is it still a 3/8 hard line that i can just cut and splice in to? One guy said he thought they were a plastic line now. And also ill run this way untill the in-tank pump dies and then delete it somehow? and continue just running the holley. Hows others deleting the in-tank pump and not distrubing the sending unit or where the fuel is picked up in stock location?
The line is still metal and you can just cut it and splice to run them together.
As far as going with a new system altogether, I think others are just removing the signal line from the in tank unit so the stock pump doesn't run but the fuel level sender still works. Then they use that signal line to run a relay for switching 12 volts to the new pump. When you get a FASS or the like you can get the new pickup and wiring so it will be a clean install. At this point you would be ordering one for an 05 which is when the factory went with the in tank pumps.
As far as going with a new system altogether, I think others are just removing the signal line from the in tank unit so the stock pump doesn't run but the fuel level sender still works. Then they use that signal line to run a relay for switching 12 volts to the new pump. When you get a FASS or the like you can get the new pickup and wiring so it will be a clean install. At this point you would be ordering one for an 05 which is when the factory went with the in tank pumps.
That all makes sense to me exept for ,if you did that you would be pulling through a pump oviouly thats not running in the tank, i hate to go to the trouble now to pull all that out of the tank and inspect for a way to run the holley by itself later. Basically i NEED the tank setup part to be Back Just As it was from the factory, as just a pick-up and sending unit, and my pump on the frame. I may get with my dealer and see if they keep the setup from the trucks that they retro-fit to the in-tank pump! See what im saying im trying to do or now how to when the time comes
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I don't have the in-tank pump. I still have my stock lift pump on the filter. I still have the stock pick-up 3/8" line from the tank.
The Carter pump doesn't get it's power from the factory relay, It comes direct from the battery through a oil pressure switch.
Oh ya, and I'm about $800 richer.
The Carter pump doesn't get it's power from the factory relay, It comes direct from the battery through a oil pressure switch.
Oh ya, and I'm about $800 richer.
Ya i hear ya , i have nothing bad to say about anyones products, some just seem way,way high. Bottom line we need something to move fuel from the tank to the motor with the correct press. and pleanty of volume. The holley pumps have worked for me and 4 other family trucks and a few friends. I just screwed up, when the factory pump on the filter housing died i guess i was greedy and let them do thier thing. And i regret it now its lasted no time again. Just need the factory setup again, and also if someone was worried about the pumps just keep a new spare in the tool box theres cheap [compaired] and easy to change out if needed, but i think a lot of us are smart and monitor our press. and can catch a bad pump before any harm is done or even goes out completely, my experi. is these pumps fade out or die slowly. just my 2 cents anyone with the factory setup ,for sale?
I have just installed the holley black pump on mine. I'm running a wire from battery with a relay. I have the filter mounted stock lift pump and it's still working and the holley is pushing through it. My fuel pressure at idle is about 22 lbs. My only problem is I need to work on the mounting to quiet it down. It's really resonating through the frame rail.
Good info thanks,your in good shape when your stocker goes out you can just delete it and the 14-15 from the holley will still be great. Im having prob. getting my Black in by sat. install called local parts store they have reds, and blues in stock, may have to go blue this time around. Ive read where some strech the spring a little to get it to do more like 16-18 psi dont think it needs it but thought id pass it along. The holleys come with that piece of rubber did you use it between the frame and pump bracket?
That all makes sense to me exept for ,if you did that you would be pulling through a pump oviouly thats not running in the tank, i hate to go to the trouble now to pull all that out of the tank and inspect for a way to run the holley by itself later. Basically i NEED the tank setup part to be Back Just As it was from the factory, as just a pick-up and sending unit, and my pump on the frame. I may get with my dealer and see if they keep the setup from the trucks that they retro-fit to the in-tank pump! See what im saying im trying to do or now how to when the time comes
I paid $410 for my FASS HPFP. 19 PSI and drops about 1 PSI during WOT. Rail stays above 20k during WOT.
Alcorr's on his 2nd Carter and he still saved $800. New math I guess. The Carter is the same pump that Dodge used on the 24 valves that ate more VP44's than you can shake a stick at. Not sure what makes them so great for our CR trucks. Mine didn't last, sounded terrible as you could hear it over my 5" exhaust and it didn't make enough pressure/volume to keep up with my fueling needs. 14 PSI at idle and 2 PSI at WOT then it just got worse and worse until it died. Should have done it right the first time. Oh well I learned.
shortbed rv thanks i did the search thing you mentained and got some good insight, didnt know so many others had run these pumps. I just know i used one for 120,000 miles on my 99 with no troubles.
Thought of something that i do to my holleys that might make a differance. I always pull the bottom cover and remove that piece of brass screen, its so fine it stops up with any thing at all. I fiqured id rather it go on through the pump and let the filter catch it. I wouldnt doubt this is the reason most burn up, because when that area no larger than a pen gets crud on the screen its done moving fuel it will set there and run till it gets hot and dies. We tryied years ago to move motor oil with one as a turbo scavange pump, with the screen in it she wouldnt move nothin. I removed it and pumped 15w40 like no buddys business for ever! Just remembered this -- food for thought!----


