A.I.R. - Chirping Noise From Engine Compartment at Idle

Number: 83-116

Section: 6E (VIt)

Date: Dec., 1983
Subject: "CHIRPING" NOISE FROM ENGINE

COMPARTMENT AT IDLE


Model and Year: 1981-83 CAMARO, CAPRICE, MALIBU AND MONTE CARLO WITH V8 AND 90~ V6 ENGINE

FIGURE 1 - TYPICAL CHECK VALVE LOCATION:

TO: ALL CHEVROLET DEALERS


A "chirping" noise coming from the engine compartment at idle may be from the A.I.R. check valve in the air supply line to the catalytic converter (see Figure 1). This noise may be evident when the vehicle is fully warmed up.

"TYPICAL CHECK VALVE LOCATION"
To determine if this noise is originating from the check valve, pinch off the rubber hose between the check valve and the air management valve. If the noise stops, the check valve should be replaced.

The original check valve (P/N 22017478) should be replaced with check valve, P/N 22036195.

The chart below lists the vehicles and engines this information applies to:


V.I.N.
ENGINE ENGINE CODE VEHICLE APPLICATION

1981-82 1983 Camaro Malibu/Monte Carlo Caprice


3.8L V6 - LC3 K 9 1981 1981-83 1981-83


5.0L V8 - LG4 H H 1981 1981-83 1981-83


5.7L V8 - LM1 L 6 1981 1981 1981-83


5.0L V8 - L69 - 7 ---- 1983 -------
(Monte Carlo)