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Old 07-02-2013, 03:03 PM
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Odometer

Swapping a 7.3 to a gasser with complete donor the gasser had 115k miles the 7.3 had 197k. Is there a way I can turn the odometer back on the 7.3 cluster to match the truck I'm putting it in?
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Old 07-02-2013, 03:24 PM
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A couple of things to throw out - I'm just asking.

Is there someone at your state's DMV that could answer that from a legal stand point?

Is the odo mechanical or electronic. (Number roller wheels or LCD that only comes on with the key?) If electronic, perhaps the mileage could be programmed into the PCM?

Like I said, I'm just asking.
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Old 07-02-2013, 06:05 PM
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Its digital, Im not sure if it stores the memory in the cluster or in the pcm, Im trying to keep the odometer correct with the vin so when I register it, it wont be way off from last time it was registered, it will be where it was when I took it apart
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Old 07-12-2013, 06:12 AM
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Pretty sure it cannot be rolled back. ODOs are designed to only go one way, intentionally. Digital ODOs had their code scrutinized to verify that the mileage displayed is reasonably correct and not vulnerable to tampering. I believe the mileage is stored in two places, one of which is the cluster, and the cluster is the displayed value. I'm just getting into powerstrokes, but hold a 4 year degree in auto engineering, so I'm speaking generally not specifically.
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Old 07-12-2013, 07:57 AM
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The counter is stored in the PSOM, the module on the back of the speedo/odo head. Wouldn't you want the odometer to reflect the miles on the engine, anyway? That's more important than the miles on the body. At this age, it has negligible impact on resale value. In most states, you just have to check a box on the title saying that the mileage is no longer applicable, because of a mechanical change made to the vehicle; something to that effect.
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Old 07-12-2013, 01:20 PM
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You can increase the mileage up to 300k but you can't roll it back. You could however, use the gas PSOM if it's still working. The cluster is modular, you just need to remove a bunch of screws.

Last edited by JSchuricht; 07-12-2013 at 11:29 PM.
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Old 07-12-2013, 10:13 PM
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You can use the gas PSOM.
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Old 07-12-2013, 11:31 PM
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Quote:
Originally Posted by madpogue View Post
You can use the gas PSOM.
I need to pay more attention to what I write.
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Old 07-13-2013, 09:15 AM
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Quote:
Originally Posted by cbates85 View Post
Swapping a 7.3 to a gasser with complete donor the gasser had 115k miles the 7.3 had 197k. Is there a way I can turn the odometer back on the 7.3 cluster to match the truck I'm putting it in?
??? Really???

KEEP the gasser Odometer/PSOM and put tin in the diesel cluster

That is if they are of the CORRECT year interchangeability
1992-93 interchange, 1994-95 interchange and 1996-97(HD trucks) interchange.
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Old 07-25-2013, 07:21 AM
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so the only way to 'rollback' the odo is to swap it out with a lower mileage one?
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