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Search: Keyword(s): ; Posts Made By: al_r
Forum: E36 (1991 - 1999) 02-17-2005, 08:34 AM
Replies: 8
Views: 3,099
Posted By al_r
Look at: ...

Look at:

Forum: E36 (1991 - 1999) 01-28-2005, 08:11 AM
Replies: 2
Views: 7,644
Posted By al_r
That is your secondary air pump, 'injects' fresh...

That is your secondary air pump, 'injects' fresh air into the exhaust manifold at start up time till the ECU shuts it off - strictly emissions related. If the pump fails, you'll get a CEL/code...
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