84 4KSQ/88 5KSQ Fuel Pump Interchange

[Kneale Brownson]

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A 4K pump won't work on a 5K application.  The 4K pump is external to the
tank while the 5K is located inside the tank.


At 08:14 AM 02/02/2002 -0500, gwbutler wrote:

>Hello All,
>
>Please accept my belated best wishes for you, your families, and your Audis
>for 2002.  I have a quick scenario/question for any BTDT's and other
>knowlegeable folk.  My sons 88 5ksq:
>
>1. Has been experiencing a progressively louder whine/buzz from the fuel pump
>
>2. Takes an extremely long time to get up to speed (it's "fine over 40 mph but
>even that is getting worse"
>
>The rub:
>
>I have a used known good Bosch fuel pump from an 84 ksq sitting in the cellar
>and I need to know if it's interchangeable with the 88 5ksq before ordering
>one from Blau (and before laying out on my icy driveway looking for the
>numbers on the 88 5ksq fuel pump).  Any info/advice? TIA
>
>Regards,
>
>George B.
>Massachusetts (Brrrrrrrr)
>84 4ksq
>88 5ksq by default.. ;)
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