1988 Chevrolet Spectrum Base, 2D Hatchback, AutomaticFACTORY OEM SERVICE PROCEDURE

Air Injection System: Description

The air injection system is designed to reduce CO and HC emission by supplying filtered air through the air induction pipe into the wastegate manifold. This system consists principally of the reed valve, vacuum switching valve, air induction pipe and electronic control module.

Fig 1: Air Induction System
G93757Courtesy of GENERAL MOTORS CORP.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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