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04-17-2002, 01:51 PM | #1 |
Scooby Specialist
Member#: 1994
Join Date: Jul 2000
Location: South Somewhere
Vehicle:2018 STI WRB |
Is my fuel pump crapping out on me?
I drove out to the city today to run an errand, and when I was stopped at a light, with the radio down, I could hear a loud whining coming from the car. I listened for a bit, and it's coming from the rear passenger side of the car, where the fuel pump is. When the car was idling on the timer, I walked around the car and listened. The whine was REALLY loud. The car doesn't feel any different, but the A/F guage shows it's running a touch leaner under cruise than it was normally. Still well within stoich, however. I thought I felt the car hesitating a little when I was cruising, but I may just be paranoid, since the a/f guage wasn't fluttering into the lean range.
The pump is a Walbro, and it's not even a year old yet.
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04-17-2002, 01:53 PM | #2 |
Moderator Member#: 922
Join Date: Feb 2000
Chapter/Region:
MWSOC
Location: Schaumburg, IL
Vehicle:16 WRX (white) 04 FXT (red) |
Mine has been fairly loud lately, too, but I haven't noticed any pressure fluctuations... hmmmm....
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04-17-2002, 01:54 PM | #3 |
Scooby Specialist
Member#: 756
Join Date: Jan 2000
Chapter/Region:
MAIC
Location: Ashburn, Va
Vehicle:2003 Legacy L wagon 2009 Kawasaki C14 |
Mine has always been really noisy since the begining if that makes you feel better.
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04-17-2002, 02:00 PM | #4 |
Scooby Specialist
Member#: 1994
Join Date: Jul 2000
Location: South Somewhere
Vehicle:2018 STI WRB |
hmm, could it just be ambient temps affecting the cooling, and making it louder? It's been REALLY hot here lately, looking at the thermometer on my PC, it's 87 outside right now.
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04-17-2002, 02:13 PM | #5 |
Scooby Specialist
Member#: 756
Join Date: Jan 2000
Chapter/Region:
MAIC
Location: Ashburn, Va
Vehicle:2003 Legacy L wagon 2009 Kawasaki C14 |
It's been hot here too, and that's when I have noticed it more
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04-17-2002, 02:35 PM | #6 | |
Scooby Specialist
Member#: 1994
Join Date: Jul 2000
Location: South Somewhere
Vehicle:2018 STI WRB |
Quote:
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04-18-2002, 07:17 AM | #7 |
Scooby Specialist
Member#: 12732
Join Date: Nov 2001
Location: Dorado Puerto Rico
Vehicle:2000 2.5RS-T Titanium silver |
Fuel problem!!!
I have a 2 weeks old walbro fuel pump. the same day it was on the car the noise was horrible. For now there is not much that we can do. You can try a fuel pressure regulator to decrease the pressure before the injectors. that should help a little!!! but keep in mind that these pumps were made for racing purposes, comfort is not a big deal in their design spec!!! Also try to keep the fuel level high. That will help to reduce the noise. sound waves don't like liquids!!!!!
Elliot |
04-18-2002, 11:17 AM | #8 |
Scooby Specialist
Member#: 1133
Join Date: Mar 2000
Location: SE PA
Vehicle:09 GTR, 02 996 C4S 95 993 C4, 71 911, 04 STI |
My Walbro always made noise, but started whining badly after about 9 months. Got a Supra TT pump which is quiet, and kept the Walbro as a spare.
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04-18-2002, 01:47 PM | #9 |
Scooby Newbie
Member#: 4540
Join Date: Feb 2001
Vehicle:MY00 2.5RS Sedan Abnormally Aspirated |
My Walbro has also been very loud, since day one. Seems to be moving gas fine, though.
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04-18-2002, 10:43 PM | #10 |
Scooby Specialist
Member#: 9316
Join Date: Aug 2001
Location: Litchfield Park, AZ
Vehicle:1997 Legacy GT [email protected] |
Same thing hear. I've had mine for about 15 months. Then about 2 weeks ago it started. Kinda pissing me off, mostly just because I wasen't sure if it was ok.
Mike |
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