Section 1 (Instrument Panel - Electronic): Testing: Tachometer

WARNING: This page is about a different car, the 1987 Chrysler Conquest. However, it is still accessible from the selected car via links, so may be relevant.

Connect a tachometer and compare readings against vehicle tachometer at various RPM (one segment equals 100 rpm). See Fig 1 . If variation exceeds maximum amount allowable, replace tachometer. See TACHOMETER RPM VARIATION .

Fig 1: Tachometer Testing Hook-Up

Courtesy of CHRYSLER MOTORS.

TACHOMETER RPM VARIATION

Engine RPM	Tachometer RPM Range
1000	900-1100
3000	2800-3200
6000	5800-6500