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Old 09-29-2019, 03:48 PM   #12
Ecomike
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Join Date: Jan 2011
Posts: 295

2001 SL1
Default Re: Secondary air injection system

Quote:
Originally Posted by fdryer View Post
The air pump is just a blower motor using brushes no different from starters, blower motors and windshield wiper motors. They would eventually wear out; plain bearings, brushes and commutators. The best way to test the motor is direct wiring to the battery unless you're familiar with wiring circuits to use a jumper across the pump relay.
Are the brushes replaceable, reachable or is this motor just like POS e-fan radiator fan motors that Croak every 3 years like clock work?

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