Minimum Air Rate

***UPDATED BY TSB 90-6C-49(B) DATED JULY, 1990


CONTROLLED IDLE SPEED

Transmission Gear Idle Speed IAC Counts [1] Open/Closed Loop [2]

Man. N 550 2-20 CL

Auto D 537 10-25 CL


[1] Add 2 counts for engines with less than 500 miles. Add 2 counts for every 1000 ft above sea level.

[2] Let engine idle until proper fuel control status is reached (open/closed loop).


MINIMUM IDLE AIR RATE

Transmission Gear Engine Speed [2] Open/Closed Loop [1]

Man. N 400 - 525 CL

Auto. D 400 +/- 50 CL

[1] Let engine idle until proper fuel control status is reached (open/closed loop).

[2] If the engine has less than 500 miles or is checked at altitudes above 1500 feet, the idle rpm with a seated IAC valve should be lower than the values above.


TIGHTENING SPECIFICATIONS

Air Injection Pipe 20 ft. lbs.

Check Valve to Air Injection Pipe 18 ft. lbs.

EGR valve to manifold 15 ft. lbs.

Oxygen sensor 30 ft. lbs.

TBI Unit to manifold 12 ft. lbs.