Idle Adjustment; Idle Speed - Mazda 626 1989 Workshop Manual

\
Check connector (White, 1-pin)
\(fo r tachometer).

IDLE ADJUSTMENT

IDLE SPEED

Preparation
1) Check the condition of the engine (plugs, leaks in
hoses, etc.).
2) Make sure all accessories are OFF.
3) Warm up the engine and run it for three minutes
at 2,500—3,000 rpm in neutral.
4) Check the initial ignition timing and adjust it if
necessary.
76F04B-024
Inspection
1. Check that the idle speed is within specification
without grounding the test connector (Green,
1-pin).
Specification:
Applied load
No load
P/S load
A/C and/or E/L load.
2. If not correct, adjust the initial idle speed.
Adjustment
1. Ground the test connector (Green, 1 -pin) with a
jumper wire.
2. Turn all accessories and loads OFF.
76G04C-047
3. Remove the blind cap and adjust the initial idle
speed to specification by turning the air adjust
screw.
Initial idle speed: 750 ± 50 rpm
4. After adjusting the idle speed, install the blind cap
and disconnect the jumper wire from the test con­
nector.
5. Recheck the idle speed.
6. If not within specification, check the idle speed con­
trol (ISC) system.
76G04C-048
IDLE ADJUSTMENT
Idle speed
750 ± 50 rpm
750 ± 50 rpm
800 ± 50 rpm
4B
'
)