What normally goes bad when odometer suddenly quits?


Old 10-26-09, 08:12 AM
Banned. Rule And/Or Policy Violation
Thread Starter
Join Date: May 2007
Location: Wisconsin
Posts: 8,629
What normally goes bad when odometer suddenly quits?

The speedometer works -thank goodness.

It's a 90 Dodge Spirit. Where should I start looking?
Sponsored Links
Old 10-26-09, 10:51 AM
Join Date: Aug 2006
Location: santa fe /texas
Posts: 998
speed ometer head / (guages assy)might try a salvage yard.
will need the same options your car has.
Old 10-26-09, 12:39 PM
Join Date: Oct 2009
Location: Pennsylvania
Posts: 105
Most times the memory for the odometer is kept in the PROM on the board where the display for the odometer is at.

Just like with your home computer, nothing lasts forever and sooner or later if there is a power surge or a faulty component - the prom looses it's memory and the gauge goes blank or shows a error.

Like Newtofta has said, you can search the junkyards for a good used one that still works, but at the age of your vehicle and the fact that most junkyards only keeps late model vehicles 10 years at the most, you might have a hard time finding one.

You can also search the data base on Car-Part.com--Used Auto Parts Market

You might pay a little more to have it shipped from where ever there is one available, but at least you will have the part you need.
Old 10-26-09, 06:31 PM
Banned. Rule And/Or Policy Violation
Thread Starter
Join Date: May 2007
Location: Wisconsin
Posts: 8,629
Just so you know, my odometer is old fashioned analog. Does that change anyone's thinking?

Why would I need a speedometer head when only the odometer part does not work? Or, is it like there are 2 gears where say an outer gear is still good(speedometer), but the inner one is shot(odometer) - or what?

I feel real good though so far that I at least got a couple replies on this one.
Old 10-26-09, 09:14 PM
crazycory22's Avatar
Join Date: Jul 2005
Location: USA
Posts: 375
I believe there are multiple gears in a speedometer head. One for the speedometer itself, one for the odometer, and one for the trip. The gear for the odo probably stripped out, or fell off. Unfortunately your best bet is to go to a salvage yard, and look for one with very close to the same mileage, or if you can't find one with close to the same mileage you'll have to get a sticker that goes on the door frame that lists the mileage that the factory odo quit at. A 90 Spirit wouldn't have an electronic head I don't believe. Just my .02

Old 10-26-09, 09:29 PM
nap's Avatar
nap is offline
New Member
Join Date: May 2006
Location: north
Posts: 4,163
ecman, they last forever unless you attempt to tamper with them, Then they self destruct.

you weren't tampering with the odo were you?

just kidding.
Old 10-26-09, 09:33 PM
Join Date: Aug 2006
Location: santa fe /texas
Posts: 998
crazy-,is correct-the speedo head is an,one-pice-(all included)
part of the dash-instrument cluster.
"i' would not wory about mileage, on the replacement 'odo'-just a sales reciept 'stating that it purchased to replace a defective one'
'as he stated' beings that you are 'analog' might make your finding a replacement more 'likely'
Old 10-27-09, 05:43 AM
the_tow_guy's Avatar
Group Moderator
Join Date: Feb 2001
Location: SW Fla USA
Posts: 11,588
If you're brave and want to try disassembling it, you might be able to replace the stripped gear. I did that a while back on a Saturn. Got the gears here:

Speedometer Gears and Odometer Gears. Speedometer Parts

Don't know about Wisconsin, but down here a vehicle that old doesn't need to have the mileage certified to sell it; it would be exempt.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes