Specifications

HI IDLE SPRRD OR HUNTING IDLE - NEW THROTTLE BODY CAT. 4, NO. 008/84

Article Text

1984 Mazda RX7

For iluvmyrx7.com

Saturday, June 08, 2002 10:57PM

ARTICLE BEGINNING

TECHNICAL SERVICE BULLETIN

HIGH IDLE SPEED OR IDLE SPEED HUNTING

Model: 1984 RX-7 (13B)

Category: 4

Bulletin No.: 008/84

Date: 10/15/84

DESCRIPTION

If you encounter either of the following problems on 1984 RX-7 (13B)

vehicles with the engine fully warmed, please follow the repair

procedure described.

1. Engine speed hunts between approximately 1500-2000 rpm at idle.

2. Engine speed stays approximately 1200-1500 rpm at idle.

REPAIR PROCEDURE

1. Throttle Body.

Rotate the secondary throttle valve lever counter-clockwise by hand as

shown while the idle speed is high or hunting.

If this procedure corrects the problem, the high idle is due to

sticking of the secondary throttle valve, shown in Fig. 1. Replace the

throttle chamber (N304 20 S00B) in this case.

If this procedure does not correct the problem, go to Step 2.

Fig. 1: View of Secondary Throttle Valve Lever

2. Vent Solenoid Valve.

Disconnect the vacuum hose (Fig. 2) from the vent solenoid valve and