If memory serves, there's a different line for the different pumps.
See realoem.com and see if you can figure out what's going on, but I'm pretty sure I recall having read that here...and that might be all it is.
Debut Radio Show Tues, May 3, 1 p.m. on Hamiltonradio.net The Mechanical Animals
call in for car repair help! 609-503-4058
A recent set--NSFW audio: https://youtu.be/_dcxcZfD6dg
Mangofy your E46!