L-Series Sedan (3 Door) 2WD F4-1781cc 1.8L SOHC (SPFI) (1986)
Idle Speed: Technical Service Bulletins
Service Manual - Idle Speed Adjustment Correction
NUMBER 02-46-86
APPLICABILITY
SPI EQUIPPED VEHICLES
DATE 04-02-86
SUBJECT:
IDLE SPEED ADJUSTMENT
THERE IS AN ERROR CONCERNING THE SPI IDLE ADJUSTMENT IN THE 1986 SERVICE MANUAL SECTION 2-7, PAGE 10. THE IDLE
SPECIFICATION OF 600 +/- 50 IS INCORRECT. THE CORRECT SPECIFICATION IS 550 +/- 50 WITH THE AIR CONTROL VALVE
DISCONNECTED. THE PROCEDURE IS OUTLINED BELOW FOR CLARIFICATION.
FIGURE 1
Correct Idle Adjustment Procedure:
1)
Disconnect Air Control Valve Harness at Throttle Chamber assembly. (See Figure 1)
FIGURE 2IAS = Idle Adjust Screw
2)
Check RPMadjust IAS to obtain idle of 550 +/- 50 RPM. (See Figure 2)
NOTE:
If RPM is below 500 and cannot be adjusted, the problem may be with Throttle Chamber. See section 2-7, page 44, No. 4.
3)
Reconnect Air Control Valve Harness at Throttle Chamber and ensure engine idles at 700 +/- 100 RPM.
4)
If engine idling speed is less than 600 RPM the connector has faulty contact or the harness is broken.