Odometer issue - Help!
Thread Starter
|
New User
Joined: Sep 2013
Posts: 4
Likes: 0
Odometer issue - Help!
Hello, We have a 1990 F250 (460 if it's helpful) and it has developed a peculiar issue: Odometer is going up without being driven. By up, I mean it has almost doubled its odo reading; and by not driven, I mean we haven't moved it in two years.
Long story: bought it in 09 with 240000 on it. Drove it for 9 mos or so and added probably another 40k. Then it stopped running and we didn't get around to fixing it until this summer (fuel line issue). really going to miss this truck, it is way too much fun to drive, but hubby really has no use for a gas guzzler and so we've decided to sell it. I glanced at the odometer in this time and almost have a heart attack - it's reading out in excess of 550k miles! Now, Mike doesn't want to roll the thing back, but who's going to believe us? I don't think I would. So the search has been on to find some rhyme or reason as to how this could happen. At least we might be able to stop it from getting worse?
Any help is much appreciated!!
Long story: bought it in 09 with 240000 on it. Drove it for 9 mos or so and added probably another 40k. Then it stopped running and we didn't get around to fixing it until this summer (fuel line issue). really going to miss this truck, it is way too much fun to drive, but hubby really has no use for a gas guzzler and so we've decided to sell it. I glanced at the odometer in this time and almost have a heart attack - it's reading out in excess of 550k miles! Now, Mike doesn't want to roll the thing back, but who's going to believe us? I don't think I would. So the search has been on to find some rhyme or reason as to how this could happen. At least we might be able to stop it from getting worse?
Any help is much appreciated!!
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Wow!!! Wish I could offer an explanation, but if you hang on to a few more years, I'm sure Ford might be interested in throwing you a party for a million miles.
Maybe a wiser member here will be able to help you. This has happen in the past, but was small increments on a 460. Two tenths every few days.
Have you Binged or Googled this strange occurrence for 1987-1996 Ford trucks?
Maybe a wiser member here will be able to help you. This has happen in the past, but was small increments on a 460. Two tenths every few days.
Have you Binged or Googled this strange occurrence for 1987-1996 Ford trucks?
Thread Starter
|
New User
Joined: Sep 2013
Posts: 4
Likes: 0
yes, yet without any success. It's good to know that they can tick forward in small increments on their own. Do you have any idea how? I assume this happens normally when the truck is driven, due to an inaccuracy in the odometer?
Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
In 1990 these trucks have a mechanical cable driven speedometer. I believe the ODO probly has a broken gear in it and it slipped one of the number dial's while moving it(vibrations).
I have seen this happen before on older vehicles. Got to love dried out plastic gears....
I have seen this happen before on older vehicles. Got to love dried out plastic gears....
Thread Starter
|
New User
Joined: Sep 2013
Posts: 4
Likes: 0
In 1990 these trucks have a mechanical cable driven speedometer. I believe the ODO probly has a broken gear in it and it slipped one of the number dial's while moving it(vibrations).
I have seen this happen before on older vehicles. Got to love dried out plastic gears....
I have seen this happen before on older vehicles. Got to love dried out plastic gears....
Posting Guru
Joined: Jan 2002
Posts: 1,346
Likes: 8
From: Baltimore
Your odometer is 6 digits.
The far right digit is the least significant digit and displays tenths of a mile.
The other 5 digits display miles.
So the maximum miles that can be displayed is 99,999.9 miles.
If you say the odometer originally read 240000 that would be 24,000.0 miles
You can't tell what the true mileage is. After 99999.9 the odometer goes back to
00000.0 miles.
On a truck that old, most inspection stations will say mileage exceeds mechanical limit.
True mileage unknown.
The far right digit is the least significant digit and displays tenths of a mile.
The other 5 digits display miles.
So the maximum miles that can be displayed is 99,999.9 miles.
If you say the odometer originally read 240000 that would be 24,000.0 miles
You can't tell what the true mileage is. After 99999.9 the odometer goes back to
00000.0 miles.
On a truck that old, most inspection stations will say mileage exceeds mechanical limit.
True mileage unknown.
Thread Starter
|
New User
Joined: Sep 2013
Posts: 4
Likes: 0
Your odometer is 6 digits.
The far right digit is the least significant digit and displays tenths of a mile.
The other 5 digits display miles.
So the maximum miles that can be displayed is 99,999.9 miles.
If you say the odometer originally read 240000 that would be 24,000.0 miles
The far right digit is the least significant digit and displays tenths of a mile.
The other 5 digits display miles.
So the maximum miles that can be displayed is 99,999.9 miles.
If you say the odometer originally read 240000 that would be 24,000.0 miles
Thread
Thread Starter
Forum
Replies
Last Post
Rufus1945
1973 - 1979 F-100 & Larger F-Series Trucks
22
Mar 13, 2019 07:05 PM
dieseldirt
1987 - 1996 F150 & Larger F-Series Trucks
10
Jul 26, 2007 05:23 PM
