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      12-07-2012, 10:19 AM   #5
badass335
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Drives: 2007 335i E90 AT
Join Date: Jul 2007
Location: Surrey, BC

Posts: 1,772
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You'll need to give more info. I went through a ton of testing to figure mine out.
First, when you say low flow, does it stop? A lot of times, the DC would be 100% but I'd have no flow being logged. I replaced, relays, FAV, pump, lines, etc. Same issue.
I would verify flow. I ran an extension line on the FAV to a clear plastic bottle inside my car. Went for a drive to verify flow. My dash lights never came on but I would get flow in the bottle. My case, issue was the c-clamp on the flow sensor.
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