6D-2
1968
PONTIAC
SERVICE
MANUAL
RETAINING
STRAP
INSTALL
REPLACEMENT
SENSOR
ASSM
IN
SAME
POSITION
AS
ORIGINAL
ASSM
Fig.
6D-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
IDLE
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.
6D-2
Idle
Stop
Solenoid
(6
Cyl.
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
Exc.
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
IDLE
SETTING
PROCEDURE
6
CYL.
Choke
fully open, and hot idle compensator closed
on one barrels with air conditioning and all four
barrels.
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