Fuel pump whine
06-28-2010, 01:36 PM
#16
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It is normal to hear the pump in a quiet place. If yours seems louder than you expect, pull the cover from the pump and see if the pump or any of the lines or hoses are touching the tank or chassis. This will telegraph noise.
A partially plugged fuel filter will increase the pump buzz.
A partially plugged fuel filter will increase the pump buzz.
Ken
80 928 S
5 Speed
UK
06-28-2010, 02:17 PM
#17
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My external pump drove me crazy with all that whining ... a couple hundred bucks with Roger and now it's blissfully quiet! Mine was the original, and I had already done the internal pump and filter, so I knew I was on borrowed time!
06-29-2010, 10:04 AM
#21
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No internal on an 84 US car. Some of the hot climate cars did have them such as Australia.
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
07-02-2010, 05:40 PM
#22
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Just replaced the fuel pump and filter yesterday. The drive to work this morning was pretty nice due to more power and less shaking. Next step is to send out the injectors. Tonight its new front sway bar bushings. What does everyone think about the GP sorensen injectors at autozone for 37.00 each. I may just get a set of those.
01-23-2011, 03:59 AM
#23
Intermediate
The whine on a fuel pump comes from to much pressure from blockage or dirty filter or system not from a bad fuel pump. These cars are expensive enough without needlessly replacing parts. If you want to check your fuel pump take it off hot wire off of battery (watch sparks and have fire extinguisher handy) put a hose from a can of gas to the inlet side off pump and run gas through it. If it is perfectly smooth and makes a consistent humming noise with less sound then it was on then it is perfectly fine. If you hear gear grinding noise it's bad.
