1986 Chevrolet Camaro Base, 2.8 S, StandardFACTORY OEM SERVICE PROCEDURE

Idle Air Control Valve: Installation

  1. Before installing new IAC valve, measure the distance that the valve is extended. See Fig 1 . If cone is extended too far, valve may be damaged when installed. Distance must be no greater than 1 1/8" (28 mm).
  2. Measurement should be taken from valve housing flange to end of cone. Determine if IAC valve is Type I or Type II. Type I has a collar at electrical terminal and Type II does not. See Fig 1 .
    Fig 1: Identifying IAC Valve
    G3257
  3. To retract Type I, exert firm pressure on valve. To retract Type II, compress retaining spring while turning valve in with a clockwise motion. Return spring to original position.
  4. Either valve should be installed with a new gasket. Tighten to 13 ft. lbs. (18 N.m). Install connector on valve. Start engine. ECM will reset idle speed when vehicle is driven above 35 MPH.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

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

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

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.