740 L4-2.3L SOHC VIN 88 B230F (1985)
Install throttle housing. Re-check that "LL" lamp on 8190 is lit when throttle is in idling position. Adjust throttle switch if necessary.
Start engine.
Adjust idling speed
Note:
A/C must be turned OFF.
Use idling screw to adjust speed to:
11.7 r/s (700 rpm)
Disconnect air valve ground connection. Speed should now increase sharply before dropping back to 12.5 r/s (750 rpm).
8190 meter should indicate approx. 3.6 if throttle housing, CO, and idle speed are set correctly.
With 8190 selector in position 5, rev engine and check that meter reads almost 5.
During the New Car Warranty period, claims must be submitted under:
Operation Number
Labor Description
Time Allowance
230 035
CIS, diagnosis
0.1 hr.
230 126
CO, check/adjust
0.7
230 033
CIS valve, replace (only if defective)
0.5
230 123
Throttle housing, remove/clean/adjust
Idle speed, adjust
0.3
238 126
Throttle switch/stop, adjust
VSTG
NOTE:
Throttle switch adjustment on vehicles up to and including 1989 M/Y is covered under warranty for 6 months/unlimited mileage. From
1990 M/Y on, vehicles certified for sale and registered in California are covered by the California Emissions Warranty for 3 years/50,000
miles.
Defect Code:
52 - (for op. #'s 230126,230123)
Failed P/N:
1389618-8 or 3517067-9