Tachometer and battery gauges failed at the same time

BEUROB

MEMBER
1991 FORD BRONCO
5.8L
V8
4WD
AUTOMATIC
140,000 MILES

I started the vehicle normally and gave it a minute to stabilize RPM's. I put it into reverse and it clunked a bit into gear, as it does sometimes, and I noticed my tachometer read zero RPM's and my battery read zero volts, but everything was running fine. I turned it off and back on no issue, but they both remained reading zero. I know there is a fuse I can check for the tachometer but see nothing for the battery and would love any help.

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

This sounds like the cluster itself has failed internally.

https://www.2carpros.com/articles/how-to-check-wiring

I attached a wiring diagram of the cluster for you to view. If it was the fuse, all gauges would have stopped reading.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Roy

1. Disconnect battery ground cable.
2. Remove wiper/washer knob. Use a suitable hook tool to release knob lock tab.
3. Remove light switch knob, windshield wiper switch knob and fog light switch knob, if equipped.
4. Remove steering column shroud, using care not to damage transmission selector indicator cables on models equipped with automatic transmission.
5. On models equipped with automatic transmission, release shift lever indicator cable retaining clip(s), then remove cable loop from retainer pin. Remove cable bracket attaching screw and slide bracket out of slot in tube.
6. On all models, remove cluster finish panel and the cluster attaching screws, Fig. 10.
7. Pull cluster back from panel and disconnect speedometer cable, printed circuit electrical connector and 4 X 4 indicator light electrical connector, if equipped.
8. Remove cluster from vehicle, Fig. 10.
9. Reverse procedure to install.

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Tuesday, December 29th, 2020 AT 2:18 AM

BEUROB

MEMBER
3 POSTS

I’ve put in a new cluster and it is still not working, and to clarify as I’ve noticed a couple more things. It is also the fuel gauge, oil gauge, and coolant temperature gauge that are not working along with the original tachometer and battery.

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Monday, February 8th, 2021 AT 9:37 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Did you verify power to the cluster?

Roy

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Monday, February 8th, 2021 AT 11:52 AM

BEUROB

MEMBER
3 POSTS

Meaning that say everything will light up and such? Because it will do that but will show no indication. If you mean something else then probably no if you don’t mind explaining.

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Monday, February 8th, 2021 AT 2:50 PM

ASEMASTER6371