Tachometer dropped to 0

Good morning,

This sounds like a low voltage issue that is causing this.

I would first suspect an ignition switch as when it glitches, it will cut power and this is the result. It could be for just a few seconds or a couple of minutes.

Roy

Ignition Switch Replacement - On Vehicle

Removal Procedure

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1. Disconnect the negative battery cable from the battery.
2. Disable the SIR system.
3. Remove the inflatable restraint steering wheel module.
4. Remove the steering wheel.
5. Remove the upper and lower steering column trim covers.
6. Remove the wire harness straps (2) from the steering column and the wire harness assembly (1).

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7. Slide the connectors (2) of the turn signal and multifunction switch assembly out of the bulkhead connector (1).
8. Remove the ignition lock cylinder.

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9. If the vehicle is equipped with a theft deterrent module (2), remove the theft deterrent module (2) from the lock module assembly.

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10. Remove the key alarm connector (1) from the lock module assembly (2).
10.1. Rotate the key alarm connector (1) 90°.
10.2. Pull the key alarm connector (1) out of the lock module assembly (2).

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11. Remove the tapping screws (2) from the ignition and key alarm switch assembly (1).
12. Remove the ignition and key alarm switch assembly (1) from the lock module assembly.