buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Engine Controls - Driveability Repair Reference Chart|Page 2833 > < Engine Controls - Driveability Repair Reference Chart|Page 2831
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17083194

10/32"

1-30 Gauge

4/32

*2

17084193

*3

17084195

Idle

Choke

Choke

Vac

Vac

Choke

Air

Stat

Link

Break

Break

and

Bleed

Lever

Cam

Front

Rear

Loader

1.756 Gauge

.120 Gauge

17~

27~

25~

35~

*1

*1.

Preset 1.756G, final adjustment on vehicle

*2.

Preset 3 turns, final adjustment on vehicle

*3.

Gauging Tool J-33815-1 (Brass Bullet)

Fast Idle Specifications

1.

Set choke fast idle cam on high step

2.

Start engine set fast idle with fast idle adjustment screw to 2400 RPM

Field Service Resetting, Specification for Idle Speed Control

ISC Minimum Idle Procedure

1.

Block Drive Wheels

2.

Cooling Fan Off

3.

Engine in Closed Loop

4.

Retract ISC Motor

5.

Set Base Idle to 500 RPM in Drive

ISC Maximum Idle Procedure

1.

Block Drive Wheels

2.

Cooling Fan Off

3.

Engine in Closed Loop

4.

Fully Extend ISC Motor

5.

Set Maximum Idle by Adjusting ISC to 1350 RPM in Drive

Throttle Position Sensor Specifications

1.

Retract ISC to Minimum Idle

2.

Set T.P.S. Voltage to .57 +/- .01 Volts

Included in this bulletin are updated diagnostic charts for these changes.

Engine Controls - Driveability Repair Reference Chart|Page 2833 > < Engine Controls - Driveability Repair Reference Chart|Page 2831