Stock fuel pump whine
#427641
June 05, 2014 05:39 pm UTC
June 05, 2014 05:39 pm UTC
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Joined: May 2013
Posts: 48 Toronto, Ontario
Jerome Ferrer
OP
Newbie on Probation
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OP
Newbie on Probation
Joined: May 2013
Posts: 48
Toronto, Ontario
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Hey guys, me again lol. So as the title states I've noticed that my fuel pump is whining pretty loudly. If this has been answered before then I apologize, but I've been searching for over an hour and all I've seen is that whining is only normal if you've installed a stronger fuel pump.
So my question is: is it normal for my STOCK fuel pump to whine loudly? It only started whining loudly recently, as in maybe it whined before but I've never been able to notice it until now as it's quite audible. I've been told that my fuel filter may be clogged and causing the whine (due to just recently getting the car up running 3 weeks ago after sitting with 1/4 tank of gas for 7 months.)
So am I on the right path? So some background info is that I've been battling an idle issue where the car sounds like a muscle car, as in the sounds like it's pulsing. CEL is on, I forgot the code and my car's at school but it was something like "Idle systems something." The car runs great except the idle. No problems accelerating at all or anything, but if I just blip the throttle at neutral I can hear the whine go a higher pitch along with the rpm for a split second. The whine doesn't sound like it's changing with the fluctuating idle, it's just a very steady whine unless I blip the throttle.
So is the whine normal or possibly if my fuel filter is clogged and causing the whine? Appreciate the help guys.
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Re: Stock fuel pump whine
[Re: Jerome Ferrer]
#427779
June 08, 2014 01:20 pm UTC
June 08, 2014 01:20 pm UTC
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Joined: Jun 2012
Posts: 2,669 Toronto, Ontario
Stephan Tanchak
Insane Member
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Insane Member
Joined: Jun 2012
Posts: 2,669
Toronto, Ontario
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Well, the whine shouldn't be very loud. Unless your tank is next to being completely empty. A walbro 190 is a cheap upgrade and doesn't require an AFPR. I also have a stock fuel pump you can have.
1998 Eclipse GSX Spyder 11.5@124 AWD Talons: 1992, 1993, 1997, 1998
Team Big Turbo
PHP: 2
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Re: Stock fuel pump whine
[Re: Jerome Ferrer]
#427819
June 08, 2014 09:44 pm UTC
June 08, 2014 09:44 pm UTC
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Joined: May 2013
Posts: 48 Toronto, Ontario
Jerome Ferrer
OP
Newbie on Probation
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OP
Newbie on Probation
Joined: May 2013
Posts: 48
Toronto, Ontario
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Ok, so this is messed up. So on my way to get some parts I stopped by the gasoline station. After filling up and coming back to the car from paying I see a HUGE puddle of fuel. Luckily the gasoline station is only down the street from me so I got to go back home quickly. Anyways just to make a long story short, turns out one of my classmates who disassembled the fuel filter/gauge? (other side of the fuel pump, behind driver) was in a rush to put it back together as I found the rubber seal/gasket thing inside the tank. So after putting everything back together properly and sealed, losing 3/4 tank in the process :(, I thought maybe that could of caused the whine. So I start the car up again and the whine is still there, seeing as I had the covers off I was going to try pinching the lines as Stephen R suggested. But after listening a lot more closely with the covers off it sounded like it was coming more from the filter/gauge side. After even more listening, I found this was the culprit. http://i1363.photobucket.com/albums/r713/ferrerj004/IMAG00251_zps9111ebaf.jpgYes, that's a mbc. The lines were split and also it was leaking from the screw. So after taping the lines up heavily and replacing the mbc with a spare one I had, the whine is gone! I actually had a thread on Tuners about this when I first got the car, I came to a conclusion that they didn't work or go anywhere as no matter how much I tightened or loosened the screw, nothing happened to my boost. Well now I know that they do go somewhere, I just don't know where yet. Also just to note that when I took off one of the lines from the mbc and alternated putting my finger off and on to block the line, it affected my idle as the boost gauge showed it getting more vacuum when I blocked the line. Anyways don't want to go off topic but all in all the whine is now gone. It was not my fuel pump, that's what I get for assuming. So thanks so much Stephen and Stephen (lol), but I do apologize for not giving you the correct info.
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