Pontiac tempest 1968 Service Manual page 347

6D-2
1968 P O N T I A C SERVICE M A N U A L
RETAINING STRAP INSTALL REPLACEMENT
SENSOR ASSM IN SAME
POSITION AS ORIGINAL ASSM
Fig. 6 D - 1 Therm-AC Motor and Sensor
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 install sensor.
3. Install hoses and connections.
V-8 IDLE PROCEDURE
PONTIAC ENGINE IDLE SPEEDS
Engine
Trans.
Curb Idle RPM Fast
Idle
RPM
Engine
Trans.
Solenoid
Fast
Idle
RPM
Engine
Trans.
Active Inactive
Fast
Idle
RPM
400 2 Bbl.
M.T.
800 500
400 2 Bbl.
A . T . 600
500
400 4 Bbl.
A . T . 600
500 2500
All 4 Bbl.
M.T. 850
650 2500
428 4 Bbl.
A . T . 650
500 2500
CURB I D L E SETTING PROCEDURE V-8
1. Back out idle mixture screws four turns (2
Bbl.) or six turns (4 Bbl.) from lightly seated
position.
2. With idle stop solenoid energized, adjust mix­
ture screws to best lean carburetor setting using
solenoid stop screw for idle speed adjustment.
(Fig. 6D-2).
3. With idle stop solenoid disconnected adjust idle
speed screw on carburetor to attain the lower sole­
noid inactive idle speed. Do not re-adjust carburetor
mixture screws.
Fig. 6 D - 2 Idle Stop Solenoid (6 C y l . Shown)
TEMPEST & FIREBIRD ENGINE IDLE SPEEDS
Engine Trans.
Curb Idle RPM Fast
Idle
RPM
Engine Trans. Solenoid
Fast
Idle
RPM
Engine Trans.
Active
Inactive
Fast
Idle
RPM
350 2 Bbl. M.T. 700 500
All 2 Bbl.
A . T .
600 500
-
350 4 Bbl. A . T .
650
500 2500
All 4 Bbl. M.T.
850
650 2500
E x c . L67
400 4 Bbl. A . T .
650 500 2500
Exc. Ram
Air
Ram Air M.T.
1000
650 2800
4 Bbl.
Ram Air A . T .
650
500
2800
4 Bbl.
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.
NOTE: Curb idle on auto-matic transmission
cars to be set in drive with air conditioning turned
off.
6-CYL. IDLE PROCEDURE
SIX CYLINDER ENGINE IDLE SPEEDS
Engine Trans.
All Values Are Given In RPM
A B
C
Fast Idle
1 Bbl. M.T. 730 700 500 2400
1 Bbl. A . T . 610 600 500
-
4 Bbl. M.T. 830 800 600 2600
4 Bbl. A . T . 610 600 500 2800
CURB I D L E SETTING PROCEDURE 6 C Y L .
Choke fully open, and hot idle compensator closed
on one barrels with air conditioning and all four
barrels.