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Home >> Oldsmobile >> 1999 >> Intrigue GL, 3.5 H >> Repair and Diagnosis >> External Pages >> Different car >> Section 2 (Instrument Panel - Analog) >> Symptom Tests >> Tachometer Inaccurate Or Inoperative

Tachometer Inaccurate Or Inoperative

WARNING: This page is about a different car, the 1999 Pontiac Grand Am and 1999 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform INSTRUMENT PANEL CLUSTER SYSTEM CHECK  under SYSTEM TESTS. Go to next step.
  2. Connect scan tool to DLC and turn ignition on. Select Instrument Panel Cluster (IPC) special functions IPC gauges on scan tool. Command tachometer gauge UP. Tachometer should go from 0 RPM to maximum RPM and back to 0 RPM smoothly. If tachometer gauge sweep test is okay, go to POWERTRAIN ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - GASOLINE - EXCEPT METRO, PRIZM & TRACKER article in ENGINE PERFORMANCE. If tachometer gauge sweep test is not okay, go to next step.
  3. Replace instrument panel cluster. See INSTRUMENT PANEL CLUSTER (IPC)  under REMOVAL & INSTALLATION. After repairs, go to INSTRUMENT PANEL CLUSTER SYSTEM CHECK  under SYSTEM TESTS.
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