Very Irratic Speedometer
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Elder User
Joined: Oct 2002
Posts: 573
Likes: 0
From: Medina, Tn.
Very Irratic Speedometer
I have had so much luck with this forum. After my speedometer had been fluctuating for a month or so, I finally found the culprit. It was the large 17 tooth gear at the end of the cable located in the transfer case. Took about 15 minutes and cost less than $15.
Thanks again guys and maybe this may help a few of you down the road.
Frank
1989 Bronco
230,000 miles
All Original
Gets better everyday !!
Thanks again guys and maybe this may help a few of you down the road.
Frank
1989 Bronco
230,000 miles
All Original
Gets better everyday !!
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Very Irratic Speedometer
Beware: 
the blue spiral gear that drives the one you bought may not be far behind it! 
The drive gear should only be about $8 and the driven $7.50, but you have to get a pair that will work together & give you the right speed IF YOU'VE CHANGED TIRE SIZE. The cable wears out, too, and will cause the needle to jump.
All that is why I converted my '83 to use a '92-97 PSOM.
The only moving part is the NEEDLE, and I can reset it with the buttons on the face! 
the blue spiral gear that drives the one you bought may not be far behind it! The drive gear should only be about $8 and the driven $7.50, but you have to get a pair that will work together & give you the right speed IF YOU'VE CHANGED TIRE SIZE. The cable wears out, too, and will cause the needle to jump.All that is why I converted my '83 to use a '92-97 PSOM.
The only moving part is the NEEDLE, and I can reset it with the buttons on the face!
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Very Irratic Speedometer
Programmable Speedometer Odometer Module - the electronic speedo used on '92-96 F-series & Broncos, and some E-series & Aerostars.
Check it out:
http://www.webphotos.com/list_photos.asp?mi=3&smi=1&a=13217
http://bbs.off-road.com/ubbthreads/showflat.php?Cat=&Board=offroadfordbroncolate&Numb er=898100&page=0&view=expanded&sb=5&o=&fpart=
Check it out:
http://www.webphotos.com/list_photos.asp?mi=3&smi=1&a=13217
http://bbs.off-road.com/ubbthreads/showflat.php?Cat=&Board=offroadfordbroncolate&Numb er=898100&page=0&view=expanded&sb=5&o=&fpart=
