Repair Procedures: Tachometer
- Connect the scan tool to the diagnostic link connector or install a tachometer.
- With the engine started, compare the readings of the tester with that of the tachometer. Replace the tachometer if the tolerance is exceeded.CAUTION:
- Reversing the connections of the tachometer will damage the transistor and diodes inside.
- When removing or installing the tachometer, be careful not to drop it or subject it to severe shock.
TACHOMETER CHARTRevolution (RPM) 1,000 2,000 3,000 4,000 Remark Tolerance (RPM) ±100 ±125 ±150 ±170 Gasoline Revolution (RPM) 5,000 6,000 7,000 - Remark Tolerance (RPM) ±200 ±240 ±260 - Gasoline