odometer question?? - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 02-21-2012 Thread Starter
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odometer question??

I have a 98 Mustang and just noticed the odometer isn`t working. My car only has about 60,000 miles on it and I don`t drive it much. Last summer I had the heater core replaced and it probably hasn`t worked since then. I never really paid any attention to it until recently and the speedometer is fine.

Most of the threads list the odometer gear going bad as a common problem on high mileage Mustangs. Is it possible the mechanic didn`t connect it properly after he removed the dash when replaced the core??

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post #2 of 6 (permalink) Old 02-21-2012
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60k is not high mileage. You'll have to go through a repair manual and find out how the odometer is connected. In the old days the speedometer and the odometer used the same cable, a mechanical system. Newer cars its all computer.


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post #3 of 6 (permalink) Old 02-21-2012
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94+ use a electronic system. If your speedometer is working but the odometer isnt, it is most likley that the gear went bad. You can get new ones from LRS.

1994-98 Mustang Odometer Gear Repair Kit at LRS - Free Shipping!
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post #4 of 6 (permalink) Old 02-21-2012
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The gear is broken they rot pretty fast.

Just replace it with one like he linked you to, it isn't hard to replace.

Also you cannot calibrate pre 99 MY speedo with a tuner.

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post #5 of 6 (permalink) Old 02-23-2012
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'95 speedometer problem

Two things to check;
1.) remove the cluster, then take a pencil eraser and gently 'erase' the pins on both connectors.
Do the same on the cluster where the plug pins contact the printed circuit. You'll have to flatten the eraser a little to fit into the resessed connector channel.
As with any electronic contacts, the slightest 'film' on these contacts can effect the connection, or lack of.

2.) Disassemble the cluster. The two end gauge assemblies need to pop out BEFORE the center speedo/tack assembly. (Reverse this on re-assembly).
Remove the green plastic assembly that houses the miles and trip numbers rolls.

Remove the odometer number roll and gear that connects the odometer and trip number roll together;
To remove the odometer number roll, gently pry up on the black plastic shaft/gear that runs between the trip and the odometer. They will seperate when lifted about a quarter inch.
THE TRIP NUMBER ROLL CAN REMAIN IN PLACE.

Inspect the teeth on the black plastic gear located UNDER the gear that is between the miles and trip number roll. (Mine were so fragile and dried out the teeth broke at the slightest touch.)

To reassemble, place the number roll end in the cradle opposite end of the shaft end, then press gently back in place. (The shaft has a flat spot that has to fit into a corresponding flat in the black plastic gear shaft.
Get a replacement assembly from the bone yard. Change the whole thing or just change the gear.
The speedometer is direct drive from a tiny motor. The motor plugs into a circuit board.
This will all become plain when you get the thing disassembled and view the parts.
Hope this helps.
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post #6 of 6 (permalink) Old 02-24-2012
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I'd suggest using a non-abrasive eraser, or better yet, a q-tip and some rubbing alcohol. The gold on the contacts is very thin and can be rubbed off with an abrasive very easily.

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