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Secondary Air Injection Solenoid
I have a 98 Tahoe with a secondary air injection system. Can someone tell me where the vacuum source for the solenoid is coming from? My solenoid only has the vacuum line to the control valve. The other vacuum port on the solenoid is vented to atmosphere.
I do not have a vacuum leak or an open vacuum port. I think whoever worked on this last removed the solenoid vacuum source line and tee that it ran into for whatever reason. So without a vacuum source to the solenoid, the control valve won’t open to let pump air into the exhaust stream, thus triggering the 410 code. I can tee into any vacuum line, but I really wanted to know how the factory routed the vacuum line.
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01-27-2021, 05:26 AM
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