the tachometer and digital odometer working only intermittently?

1996 DODGE STRATUS
170,150 MILES • 2.0L • 4 CYL • 2WD • MANUAL
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SINGLENET
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Had the entire instrument cluster fixed and tested by a reputable business. After all, working great for a couple days, the tach and digital odometer working only intermittently. Self-diagnostic for the gauges (per shop and Haynes manual) never gave results, would seemingly not enter diagnostic mode. Other gauges are working fine.
My Fiero had what they called a "tach filter", really just an inline capacitor or resistor which fixed the tach for that vehicle. Totally stumped on this one... Any ideas, anyone?
Aug 29, 2022 at 6:45 PM
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STRAILER
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It is common for the amplifier inside the instrument cluster to go bad, it might have worked when they tested it but when it heats up it will fail. I would get a rebuilt cluster; you can find one by searching google. You may have a BCM that is going out as well which we can find out by doing a CAN scan, which is easy to do. You can get a CAN scanner from Amazon for about $30.00.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

Here is a scanner link:

https://amzn.to/3o41KcZ

Here is the cluster wiring diagrams so you can see how the system works and I have left how to change the BCM out as well. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Aug 30, 2022 at 10:27 AM