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Noisy fuel pump saga continues. 200 1982

posted by  Bob Wennerstrom on  Fri Aug 9 13:08 CST 2002
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last visit: Fri Jul 15 12:01 CST 2011
[RELATED]

My main fuel pump got really noisy after installing a new in tank pump. Jerked out the main pump and replaced it with a junkyard pump, still noisy. Pulled the in tank pump, connections OK and polarity was the same position as the old pump (but no + marking on new pump), fuel hosefrom pump to dip tube, OK. Replaced the new in tank pump with a junkyard one and the noise is much better, not totally gone but more intermittently noisy instead of full time noisy.

My research has indicated 2 things might cure this. Bentley's shows a little fuel dampening device can be installed in the main pump pickup line, apparently this is a Volvo retrofit innovation to address noisy fuel pump issues. The latest IPD catalog also suggests using a post 86 pre pump with higher flow rate in high altitude or warm climate. I'm at 6500 ft so I think I qualify for high altitude.

Anyone tried either one of these solutions and how did they work? Which would you try? Pump+sock is $35/ damper is $50 at FCPGroton.

Bob
82 intercooled turbowagon








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    Noisy fuel pump saga continues. 200 1982

    posted by  someone claiming to be dlot on  Sun Aug 11 03:59 CST 2002 [RELATED]

    The higher flow rate pump sounds like a good idea. I haven't tried that. I just
    wanted to recommend making sure you don't have the relay problems like Don Foster
    points out. If the relay needs the circuit connections soldered the pump may be noisy. Also I recommend you clean the main fuse box to make sure you have the
    smallest voltage drop across the fuses. Especially, fuse 5 and 7 because they
    are for the fuel pumps on a turbo. Fuse 7 runs warm and should be changed every
    3-5 years in my experience.

    Dave 82 242ti 275k mi.







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