BMW 3-Series (E90 E92) Forum - View Single Post

greenberet123 · 02-04-2022, 04:53 PM

Getting 2A00, so I disconnected the secondary air pump hose which goes to the valve and did a cold start, but no air coming out of the pump. I can't tell from the sound whether it's working or not, so decided to remove it.

Looks like I need to provide a 12V DC source to test it. I don't have one. All I have are 1) The 12V charging port inside the car, and 2) A 12V 1000A battery that I use to jump-start. Would any of these be ok to test the air pump? I'm guessing 1000A is too much for the air pump, but will it only draw as much current as it needs? Thanks!

02-04-2022, 04:53 PM	#1
greenberet123 Private First Class 56 Rep 180 Posts Drives: E93 Join Date: May 2017 Location: Seattle iTrader: (0)	Testing secondary air pump Getting 2A00, so I disconnected the secondary air pump hose which goes to the valve and did a cold start, but no air coming out of the pump. I can't tell from the sound whether it's working or not, so decided to remove it. Looks like I need to provide a 12V DC source to test it. I don't have one. All I have are 1) The 12V charging port inside the car, and 2) A 12V 1000A battery that I use to jump-start. Would any of these be ok to test the air pump? I'm guessing 1000A is too much for the air pump, but will it only draw as much current as it needs? Thanks!
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