fuel pump ???????

mikes5.0 · 02-21-2007, 05:20 AM

hello I think my fuel pump is going bad what are some signs will my rpms drop some time when W.O.T or could it be some thing else with my ride? Its hard to start some times but when its warm its ok...What size of pump and band should i get?????thanks 4 your help.....

mustangII460 · 02-21-2007, 07:16 PM

You need to pull codes first.

mikes5.0 · 02-22-2007, 05:06 AM

no codes came up......It runs ok but it dont have that pull like it did in the upper rpms ...and some times it bogs down....will a code come up if my fuel pump is going bad.. I have a bbk adjustable reg. but i still have stock fuel pump should i get new pump and what size? and brand?I just got my motor rebuilt not too long ago so I dont think its the motor..got new ford racing 19.lb fuel injectors also....hmmm can some help please thankkkkssss

Dark_5.0 · 02-22-2007, 08:43 AM

You cant go too big with a fuel system that has a return line. I went with a 255 LPH and was happy.

mikes5.0 · 02-25-2007, 07:59 PM

What Brand Should I Go With???????and Will I Have A Problem With My Car Being Speed Density???

93svt · 03-02-2007, 07:21 PM

Walbro is a trusted name and you can get them on ebay for about $100 shipped. Also, speed density doesn't matter. That is the pump I have in my 93 Cobra and it works great, and leaves room for mods.

goodyear1984 · 03-06-2007, 04:31 AM

hey if u have mass air i would clean the sensor,oil from the k&n filters get them dirty and cause bog at wot but wont usally cause a starting problem..i had that problem last year ..you can get the maf cleaner at part stores but make sure you get the maf cleaner dont let any one tell you to use carb cleaner as carb cleaner will eat the wax off the resistor.u will notice a extra mile or 2 to the gallon neways.......yea walbro is the way to go ..good luck let us know how u make out

Coupe50h · 03-06-2007, 12:11 PM

You need an adjustable fuel pressure regulator w/ guage, this will help determine what your fp is doing under load.

Goodyear1984, he said it was speed density in his post, also i've never seen "maf cleaner", i used rubbing alcohol, or electrical contact cleaner in the past, worked fine.

goodyear1984 · 03-06-2007, 01:59 PM

they sell it at auto parts stores like adavanced..i have it at work.electric contact cleaner would work to just dont use any carb cleaner

goodyear1984 · 03-06-2007, 02:08 PM

coupe50h wow i feel dumb i didnt see that he said it was speed dencity..scrach cleaning the maf ..yea deff check the fp..

02-21-2007, 05:20 AM	#1
mikes5.0 Registered Member Join Date: Jan 2007 Location: CALIFORNIA Posts: 13	fuel pump ??????? hello I think my fuel pump is going bad what are some signs will my rpms drop some time when W.O.T or could it be some thing else with my ride? Its hard to start some times but when its warm its ok...What size of pump and band should i get?????thanks 4 your help.....

02-21-2007, 07:16 PM	#2
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Re: fuel pump ??????? You need to pull codes first. __________________ Frank

02-22-2007, 05:06 AM	#3
mikes5.0 Registered Member Join Date: Jan 2007 Location: CALIFORNIA Posts: 13	Re: fuel pump ??????? no codes came up......It runs ok but it dont have that pull like it did in the upper rpms ...and some times it bogs down....will a code come up if my fuel pump is going bad.. I have a bbk adjustable reg. but i still have stock fuel pump should i get new pump and what size? and brand?I just got my motor rebuilt not too long ago so I dont think its the motor..got new ford racing 19.lb fuel injectors also....hmmm can some help please thankkkkssss

02-22-2007, 08:43 AM	#4
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: fuel pump ??????? You cant go too big with a fuel system that has a return line. I went with a 255 LPH and was happy. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

02-25-2007, 07:59 PM	#5
mikes5.0 Registered Member Join Date: Jan 2007 Location: CALIFORNIA Posts: 13	Re: fuel pump ??????? What Brand Should I Go With???????and Will I Have A Problem With My Car Being Speed Density???

03-02-2007, 07:21 PM	#6
93svt Registered Member Join Date: Aug 2006 Location: Yankton SD Posts: 27	Re: fuel pump ??????? Walbro is a trusted name and you can get them on ebay for about $100 shipped. Also, speed density doesn't matter. That is the pump I have in my 93 Cobra and it works great, and leaves room for mods.

03-06-2007, 04:31 AM	#7
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: fuel pump ??????? hey if u have mass air i would clean the sensor,oil from the k&n filters get them dirty and cause bog at wot but wont usally cause a starting problem..i had that problem last year ..you can get the maf cleaner at part stores but make sure you get the maf cleaner dont let any one tell you to use carb cleaner as carb cleaner will eat the wax off the resistor.u will notice a extra mile or 2 to the gallon neways.......yea walbro is the way to go ..good luck let us know how u make out __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

03-06-2007, 12:11 PM	#8
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Re: fuel pump ??????? You need an adjustable fuel pressure regulator w/ guage, this will help determine what your fp is doing under load. Goodyear1984, he said it was speed density in his post, also i've never seen "maf cleaner", i used rubbing alcohol, or electrical contact cleaner in the past, worked fine. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

03-06-2007, 01:59 PM	#9
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: fuel pump ??????? they sell it at auto parts stores like adavanced..i have it at work.electric contact cleaner would work to just dont use any carb cleaner __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

03-06-2007, 02:08 PM	#10
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: fuel pump ??????? coupe50h wow i feel dumb i didnt see that he said it was speed dencity..scrach cleaning the maf ..yea deff check the fp.. __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

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