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Old 09-29-2019, 03:19 PM   #11
S-forever is on a distinguished road
Join Date: Jan 2019
Posts: 65

1997 SL2
1991 SL2
Default Re: Secondary air injection system

They definitely go bad on occasion, and if they don't run for a while, the downstream pipes will fill up with crud. This can cause a unit to not turn even if it was a bad relay or fuse if you ignore it for too long. It's only used for cold starts, but will throw a code if it doesn't work. If it doesn't work with direct power, make sure it turns freely and the pipes are clear. If it still doesn't work, it's time for a new or JY one.


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