So the Wbody fuel pump listed here is the proper direct replacement right? This one should work better than the Fbody ones because from what I understand its the same thing but less expensive (infact, identical) except is missing some sleeve or something you take out anyways..from what I can remember. Im planning on getting this very soon (like order it NOW) before my s/c install and tune in March. Thanks for the input!

W1 Fuel Pump Assembly - ($130) http://www.racetronix.biz/itemdesc.asp?ic=FPA%2D007&eq=&Tp=

Im guessing Ill need the W1 Fuel Pump Wiring Harness as well - ($60) http://www.racetronix.biz/itemdesc.asp?ic=FPWH%2D015&eq=&Tp=



04 Cav. 2dr. 5spd. My DD. 'Nuff said.

It's a direct fit, and yes, get yourself the harness as well

thats all i needed, thank you kind sir!
ordering it after i left click on that little "post" button down there


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

ordered. now...to wait. O.o


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

maybe you should update your profile with what car you have and mods



JBO since July 30, 2001

I obviously didnt update this..but Ive gotten the parts since a while back. Racetronix sent the parts fast. Its still just sitting in my dining room though...






Thinking I might do it tomorrow...its already 1030 and I have to install the pump and the harness..easier with day light.

does anyone have a link with the how to for dropping the gas tank and the steps to prep for this install? I know I remove the fuel pump fuse and then try to start it...as it should die after a few seconds right? Then, from there Im sure its fairly straight forward. The only thing I dont know yet is the harness...has a lot of extra ground connections and what not...the pump itself seems very easy based on their instructions.


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

Just did mine tonight! Finished it about a half hour ago. Biggest PITA is getting the tank out around my 3" exhaust. And bolting up the alternator connection with my 2.4 manifold and wire tuck.




Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!

Nice, if my blazer pumps ever craps out I will be getting this Wbody pump. i already have the harness installed.










~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

Roofy, how'd your tank removal process go? I had such a hard time getting it at first..but I think i could do it now pretty easy.

As of right now, my tank is sitting on the garage floor, car on jack stands, and tank is all cleaned up and ready for install. The reason the new pump is not installed?

see 2nd pic....im such an idiot...i broke one of the fuel lines attached to the top of the pump assembly trying to turn it thinking i could pull the pump out while it was under the car. Yes, i slapped myself for this.






Edited 1 time(s). Last edited Saturday, March 10, 2012 9:53 PM

04 Cav. 2dr. 5spd. My DD. 'Nuff said.

Pulling the tank wasn't bad. But then again I had almost ZERO gas in it. Less than a gallon, Hahaha. And m y tank was stuck to the underbody because of the adhesive pads glued to the tank. I had to end up prying on the top of the tank to get it to separate from the floor pan. But once I did it was easy. Did it by myself and it took less than an hour.




Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!

I syphoned the gas out, it was a pain prying the gas tank off after being not moved in 6 years. That tiny ass suction line make sure is air tight or what happened to me you'll have to drop the tank again.

which suction line..the one that actually plugs into the pump that runs down the side of the lower pump housing? I noticed it was a thinner nozzle than the stock pump..so its on firm, but not super tight :/

I have it all in...the hardest part was getting it back up by myself with 1/8th of a tank in it. And i made the mistake of bending the support straps and then when they went to go back up, they wouldnt stretch far enough. had to fight them for 30mins!

but now im running the wiring. I guess the relay is safe if it gets wet? typically i wouldnt do that..so im going to wrap it in a balloon too. but its going to be mounted up in the chasis somewhere by the gas tank, also the gound, then run the red power (ALT) along the underside and up to the battery. I was going to go to the Alt, but there are easier spots by the battery to mount the fuse thats about 6" from the wire end.

im putting it off...just tired of working on it and i still have to go fill her up so theres a good amount of gas in there for it to saturate and hopefully start working good.

The Racetronix instructions say make sure you have gas in the pump housing (which i do) but also 10Gal in the tank and to let it sit....theres no way i was leaving that much gas in there...so its got an 1/8th and ill go fill it up. should be okay?


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

well i may have the same sympton you had Michael...i got her all back together, let her prime up with about an 1/8th of a tank. stuttered while getting fuel for a few seconds, then ran good at idle.
let it idle for a minute a little high because the motor was cold, then gave it gas and it stuttered a little, started sputtering like it wanted to die, so i let off and just let it run. idled for anothing minute or two, started giving it higher reves, seemed good!

backed it out of the garage, idled, and about 20s later i couldnt give it much gas or itd die or start to..i have to ease into the throttle to get any gain in RPMs...and it wants to die randomly.

since im pretty sure the power wire going to the battery isnt the issue, i may have to take it apart again...i REALLY do not want to take this damn tank down again!!!

i did notice too that you mention it, that smaller hose that goes onto the brass nozzle of the top of the fuel pump..its smaller than the stock one...so the hose is on, but can come off with little force.

if thats the pressure hose, i bet its not holding pressure and i have to figure out how to make that tighter with a special tiny clamp or something


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

i just squeezed the clamp on the venturi hose tighter with pliers.




Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!

yeah im thinking thats the culprit....the RED arrow is the new Racetronix, the GREEN arrow is the stock pump. You can see the Racetronix is about 90% the size of the stock one, so the hose doesnt fit as tight.
its the hose that goes around to the outside of the pump assembly, Im guessing the pressure line? this would explain why i have no pressure except at idle..even then its questionable.

Im about to pull it again, took the day off so i could drop the tank and get it right...*sigh





04 Cav. 2dr. 5spd. My DD. 'Nuff said.

If ryan saw this he could explain it since its the same issue with my car when he was getting ready to tune it. you have to nip the end off that black venturi hose. Racetronix even said to cut the tip off it. It form fits the nipple on the pump and when you transfer it over it doesnt like to fit right. So once ryan clipped it, so far no more issues. Sucks but you have to drop the tank. sorry man. live and learn for sure.

if you take any off though you already barely have 'just' enough line to bend it over the edge and down...but you are referring to the 2nd pic with the red arrow? I was hoping to be able to just crimp it extra tight...i know one of the steps in the instructions said to clip a certain hose, but it wasnt clear and some of the pictures on Racetronix's instruction sheet are different than mine. It almost looked as if they were referring to a hose that wasnt even there on the jbody fuel pump.

but once i get it all out, ill check back and see if he's chimed in or if I see what the instructions were talking about a second time around...thanks for the input!!


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

well i didnt update this one but its installed and working fine.
the only problem i have now is startup, and possibly WOT.

I have to basically let it prime 3 or 4 times, and crank it for a few seconds for it to start. Once it does, its golden and holds steady RPMs without hesitation. Only thing now though is, anytime i accelerate even half throttle, for a second or less it goes LEAN then to the rich side, when it used to/should go RICH anytime you give it gas. So its like the pump is temporarily starved, and its like its not holding fluid in the lines after shut down....because i have to prime it like i said every start up. but it 'runs' well and i cruised for 20mi just to test...regular driving, idle, and slowing down it doesnt budge a bit.


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

Racetronix and all walbro pumps do not hold any pressure in the lines after they are shut off. They are missing the check valve by design. On mine I let it fully prime two times. On the second one I start it as soon as it is done priming.

Is yours hooked to the battery or alternator? If it is hooked to the battery. Hook it to the alternator! You get more volts to the pump and it starts easier hooked to the alternator. I tried both way, and it ALWAYS starts better hooked to the alternator.






PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

Yeah that's the only downside is no check valve to keep prime. Kinda upsetting when I found that out!




Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!

I was reading about a few f-body people installing one after the fuel filter, but when I went looking for the part I couldn't find it, and the post was locked before the original poster posted the part number. I believe it was an old Earl's fitting part.






PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

Im one of the few then that NEVER, and i mean Never prime the car and it starts right away. to the OP, im still betting your venturi line came off. that line keeps fuel in the cup under load and well, all the time. the cup cant fill fast enough so that line supplies excess runoff fuel from the pump that cant fit out the line back down to the pump again.

I will def look into rewiring it over to the Alternator..the main reason i went to the battery is because it was simple, and the fuse that comes off it only sits about 6-8" away and there is way more room to tap that to the frame somewhere. I made a quick glimpse at the Alt and didnt see where to plug the wire too, do you have a pic or anything? Im sure after about two seconds I can figure it out, but if i know exactly what to look for beforehand, it'll help.

I garuntee my venturi line (the small one that goes from the top of the fuel pump in the pic above with the red arrow) down the side to the bottom of the assembly is on VERY tight..i tugged on it hard, it would not budge. so its on tight. but that doesnt mean something else may have found its way to losing pressure.

its not good though, cause as i think i stated, if i dont get this fuel pressure thing fixed by this weekend, im going to hold off on the supercharger setup. the last thing i need is fuel issues with a s/c and much bigger injectors demanding way more fuel that it may not be able to provide, not to mention making it hard to properly tune.

preciate all the help so far!


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

i dont see where yuo guys are tapping into the Alternator....its above the A/C compressor from below, and i dont see any extra bolts that i can use. My Jeeps all even had an extra 'out' plug to tap into it.

also, after about a 1/4 tank of gas since yesterday, i finally threw a code on my way home from work. CEL was on.
So i got home, scanned it with my reader and it was a P0701 i think, bank 1 is reading lean. Well this makes sense since im getting poor starting pressure and a split-second lean reading when i accelerate, but then crusing and idle it drives fine without issues.

any ideas?


04 Cav. 2dr. 5spd. My DD. 'Nuff said.

What do you mean tapping into the alternator?

You put the wire on the same post that the power lead from the alternator to the starter goes.
You should be able to do this from the front of the car standing up.



FU Tuning