255lph pump acting funny

blueneonman1 · 05-29-2002, 01:33 PM

I just installed a Walbro 255lph pump. Im 100% positive i did it right. My question is when I first started it up after the install I couldnt hear it at all and there was like .5 gal. of gas in the tank. Now no matter how much gas i have in there, I can hear a low pitch whirr but sometimes like when my AC is on or when Im at idle and i step on the brake, it goes away. If I rev my car i can hear it again. However, the FP guage shows constant pressure. Does this mean the pump doesnt have enough power to stay on?

sn95gt19 · 05-30-2002, 10:13 AM

my buddy has a 97gt with a 190lph fuel pump and it does the same thing, it also gets louder when the turn signal is blinking. he hasnt had any problems with the fuel pressure though, so i guess its only the noise thats going to get annoying, i think your ok with the fuel pressure though.

05-29-2002, 01:33 PM	#1
blueneonman1 Registered Member Join Date: Mar 2001 Location: Palm Harbor, FL Posts: 208	255lph pump acting funny I just installed a Walbro 255lph pump. Im 100% positive i did it right. My question is when I first started it up after the install I couldnt hear it at all and there was like .5 gal. of gas in the tank. Now no matter how much gas i have in there, I can hear a low pitch whirr but sometimes like when my AC is on or when Im at idle and i step on the brake, it goes away. If I rev my car i can hear it again. However, the FP guage shows constant pressure. Does this mean the pump doesnt have enough power to stay on? __________________ Blue Streak - '95 5.0L Mustang GT convertible \| Saleen heat extractor fiberglass hood \| K&N custom CAI \| Taylor Spiro Pros \| Walbro 255lph pump \| Kirban AFPR \| MSD Cap/Rotor/Blaster TFI \| 2 chamber flows w/ dumps \| BBK LTs \| BBK short h-pipe \| No smog or EGR \| NOS 75hp dry kit w/ heater & purge \| Battery in trunk\| Chassis Eng. subframes \| Custom 6-pt rollbar \| King Cobra clutch \| Steeda adj. clutch cable w/ double hook quad. & firewall adj. \| B&M Ripper shifter \| FMS C springs \| Pro3i C/C plates \| Lakewood 70/30 struts \| Comp. Eng. 3-way shocks \| Chassis Eng. LCAs \| Fan switch \| 180* thermo FMS\| Kumho Ecsta 255/40's all around \| Coolest neon lighting on a Mustang EVER! Don't find yourself in front of me...my brakes SUCK! saving up for a complete Cobra package Homepage: http://www16.brinkster.com/blueneonman/ Best 1/4 time: 13.5 @ 101 Best 1/8 time: 8.6 @ 84

05-30-2002, 10:13 AM	#2
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	my buddy has a 97gt with a 190lph fuel pump and it does the same thing, it also gets louder when the turn signal is blinking. he hasnt had any problems with the fuel pressure though, so i guess its only the noise thats going to get annoying, i think your ok with the fuel pressure though. __________________ 95gt lazer red (98 cobra clone) Rice Haters Club Member #116

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