Not knowing what year ur bronco is cause you don't have it in your signature, I found this on the forum talking about a 96 with tach issues. maybe some of the troubleshooting tips will be helpful.
even after engine warmup, the tachometer would still stay between 2000 - 2500 rpm. when just revving engine seems like the tachometer doesnt move with the engine rpms. what can cause this issue, and can this also cause transmission shift issues?
So mine on my 88 wasn't spinning like that but it was wigging out bad and it was the TFI module on the distributor. Check the wiring connections, maybe yours is just dirty. Does your truck run well otherwise?
Here is some more info for you; 1989 Ford Bronco EVTM, Emissions (yellowish/red book cover) & Pre-Delivery Manuals, Partial via mrnewland1 in Google Drive @ 1989 Service manual - Google Drive
Slow scrolling, so download for faster viewing and to see the table of contents, the search feature, etc.
For any Bronco questions, it's better to post each seperately in Noobie Bronco Tech Questions. Flame free zone. This will get more attention and you can build up your post count to get into other sections such as Bronco and Ford Parts/Accessories (75 posts required to participate due to scammers who preyed on our members).
To save you time and for better responses, please fill out your Bronco info with location, year, engine size, transmission type, transfer case type (manual or electric shift), locking hub type (automatic or manual) info & major mods such as a Lift, etc. .
Bronco info is now able to be put under your user name.
Click your profile button in the top right and go to account settings.
On that first page, named Account Details, scroll down to "Vehicle Info" and type in up to 100 characters.
Now you can simply enter your information in the text editor and click save.
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Awesome, thanks for the information man. I’ll be looking into it soon and this seems like this will really come in handy.
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