Life expectancy module......?
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Senior User
Joined: Mar 2003
Posts: 259
Likes: 2
From: SOUTHERN NEW JERSEY
Life expectancy module......?
Anyone heard of such a module? I have an 87 f-250 351w , chiltons cd says there is w/ a reset button under the dash but I canot find one. anyone heard of it?
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Life expectancy module......?
I haven't heard that name for it, but it's attached to the back of the instrument cluster. Ford & Haynes call it the "Inferred Mileage & Extended Useful Life Sensor Module".
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Life expectancy module......?
It's just a small add-on PC board, but pfogle, you don't have one. I think it just turns on a service engine light after a certain amount of time, miles, or key cycles, but I'm not sure.
Lead Driver
Joined: Feb 2003
Posts: 8,140
Likes: 4
From: Oak Harbor, OH
Life expectancy module......?
I;ve got some kind of a pc-board that plugs into the side of the cluster. is it just the voltage regulator? it does have an IC on it, or is it the part of the PSOM?
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Life expectancy module......?
Oops - I keep forgetting yours is a van. I don't know what you have.
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Lead Driver
Joined: Feb 2003
Posts: 8,140
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From: Oak Harbor, OH
Life expectancy module......?
and it's also a "trasnsitional model" if you go one month earlier in the model year it's the old style.
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Posting Guru
Joined: Jan 2001
Posts: 2,358
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From: Nebraska
Life expectancy module......?
I think the Extended Useful Life sensor and the Infrared Mileage sensor are two separate things. The EUL sensor is to turn on the "emissions" light approximately every 60000 miles (actually so many hours of "on" time). The IM sensor I recall reading somewhere is supposed to change the calibration of the computer to compensate for wear on components after miles are put on.
Postmaster
Joined: Jun 1999
Posts: 2,719
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From: Lee's Summit MO
Life expectancy module......?
I've heard of this thing too, but I've heard it's just on later carburated models and not on EFI trucks. We had a '86 F-250 at work and the emissions light came on, but show'd no errors in the computer.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
Life expectancy module......?
The Haynes manual shows it on '87-89 for 5.8L only. For '84-86 there is one shown, but no engine specified. For '81-83 it says 5.0L CA only.
Only the '84-86 has an indicator light - the others just communicate with the EEC.
Only the '84-86 has an indicator light - the others just communicate with the EEC.
Lead Driver
Joined: Nov 2002
Posts: 9,555
Likes: 40
From: Concord, NC
Life expectancy module......?
My '87 has the module on it that turns on the EMISS light in the dash. The module is under the dash, above the gas pedal, and has a small hole in the side that you stick a screwdriver in to reset the module.
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