Protege L4-1839cc 1.8L DOHC (1990)
Idle Speed: Adjustments
PREPARATION
Diagnosis Connector
1.
Warm engine to operating temperature.
2.
Turn all electrical loads "OFF."
3.
If using Mazda System Selector (SST #49 B019 9A0), connect to diagnosis connector. Set switch "A" to position "1" and test switch to
"SELF-TEST" position.
4.
Connect tachometer.
5.
Apply parking brake.
NOTE: If Mazda SST is not used, install a jumper wire between diagnosis connector "TEN" and ground terminals.
ADJUSTMENT
Idle Speed Adjustment
1.
After preparation, check idle speed for these specifications:
750 ± 50 rpm (neutral or "P" range)
NOTE: Check idle speed when electric cooling fan is not operating. On A/T Canadian models, idle speed will be approximately 50 rpm higher if
parking brake is not applied.
2.
If idle speed is not within specification, correct with air adjust screw.
3.
Following adjustment, disconnect SST or remove jumper wire.