Sensor Replacement; Curb Idle Setting Procedure (Ram Air); Curb Idle Setting Procedure 6 Cyl. - Pontiac Grand Prix Service Manual

6D-2
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PONTIAC SERVICE MANUAL
RETAINING STRAP INSIALL #€?LAC€M€NI
StNSOR ASSM IN SAM€
POSITION AS ORIGINAL ASSM
Fig. 6D-1 Iherm-AC Motor and Sensor
b. Use motor strap retainer and sheet metal screw
provided in the motor service package to secure the
retainer and motor to snorkel tube.
c. If screw interferes with operation of the damper,
shorten screw.
SENSOR REPLACEMENT
REMOVE
1. Detach hoses at sensor.
2.
Pry up tabs of sensor retaining clip.
3. Remove clip and sensor from air cleaner, after
noting the installed position of the sensor.
INSTALL
1. Install sensor and gasket assembly in original holes
in air cleaner.
2. Support sensor at position B as shown in Fig. 6D-1
and press clip on sensor being careful not to damage
sensor.
3. Install hoses and connections.
CURB IDLE SETTING PROCEDURE V-8 (Except Ram
Air)
1. Back out idle mixture screws four turns (2 Bbl.) or
six turns (4 Bbl.) from lightly seated position.
2. Adjust mixture screws to best lean carburetor setting
using idle screw for idle speed adjustment.
IDLE SPEED CHART-V-8
V-8 ENGINE IDLE SPEEDS
CURB IDLE (RPM)
AUTOMATIC
ENGINE
MANUAL
I
I
Cond. turned off
I
(Exc. Ram Air)
I
4004-BBL.
I
looO
I
(Sol. Inactive)
I
(Sol. Energized)
650
I
(Sol. Inactive)
I
CURB IDLE SETTING PROCEDURE (RAM AIR)
1. With idle stop solenoid energized, adjust mixture
screws to best lean carburetor setting using solenoid
stop screw for idle speed adjustment..
2. With idle stop solenoid disconnected, adjust idle
speed screw on carburetor to attain the lower solenoid
inactive idle speed. Do not re-adjust carburetor
mixture screws.
3. Reconnect idle solenoid wire.
To set fast idle speed, run engine in neutral, choke
valve full open and fast idle lever on top step of fast
idle cam, and adjust fast idle speed screw for proper
speed setting (4 Bbl.).
NOTE:
Curb idle on automatic transmission cars to be
set in drive with air conditioning turned off:
CURB IDLE SETTING PROCEDURE 6 CYL.
Choke fully open, and hot idle compensator closed on
one barrels with air conditioning and all four barrels.
1. With carburetor mixture screws backed out 5 turns
IDLE SPEED CHART-6 CYL.
h
6 CYL. ENGINE IDLE SPEEDS
ENGINE TRANS. ALL VALUES ARE GIVEN I N RPM
FAST IDLE
2400
2800
2600
2800
C
500
500
600
500
h
A
730
610
880
610
1
BBL.
1BBL.
4 BBL.
4 BBL.
B
700
600
850
600
M.T.
A.T.
M.T.
A.T.