IAC: Idle Air Control Valve - 85-91 V8

Idle Air Control Valve for the 1985-91 TPI (TUNED PORT INJECTION) -

GM V8 & Tune Port Injected (F & 8 code V8).

FITS Camaro, Firebird TA & Corvette Plus others..

• Also known as Idle Motor valve...
• The Air Idle Control Motor (ICM) regulates the air at idle through the throttle body.

• The car's computer controls the amount of air going into the engine by controlling the ICM. These replace the function of the idle speed screw used on the older carburetors which held the air plates (or butterfly valve) open a small amount.

• These are decent aftermarket replacement for the now LONG discontinued IAC valve.

  Common problems for the air valves are deposits that cause the valve to stick or become plugged.

  Symptoms of a defective unit or defective plug on the unit unit can include rough idle, or a car that wants to cut off at idle, but runs well above at normal driving speeds

• Its screwed into the housing shown below at the underside RHS of the throttle body.

• BONNEVILLE 986-1988

  FIERO 1985-1988

  FIREBIRD TA 1985-1992

  CAMARO(8)1985-1989 CAMARO IROC-Z(1)1990-1990 CAMARO RS(1)1992-1992 CAMARO Z28(1)1991-1991 CAPRICE(13)1985-1993 CORVETTE(4)1985-1988 IMPALA 1985-85