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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1348 (Engine Control System (Introduction) -- 1.8L (LNK)) >> Description and Operation >> Secondary Air Injection (AIR) System Description >> Results of Incorrect Operation

Results of Incorrect Operation

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

If no air flow enters the exhaust stream, the start-up emission levels will rise. The control module can detect a system flow problem using the pressure sensor, and a DTC will set.

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