small-list-digest Monday, April 12 1999 Volume 03 : Number 084



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Ford Truck Enthusiasts - Ranger, Explorer, Bronco 2 and Aerostar
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In this issue:

Re: FTE Small - '98 Ranger Speedo correction?????
Re: FTE Small - '98 Ranger Speedo correction?????
FTE Small - '98 Ranger Speedo correction?????
FTE Small - 87 Bronco II Reverse Lights
Re: FTE Small - 87 Bronco II Reverse Lights
Re: FTE Small - 87 Bronco II Reverse Lights
Re: FTE Small - '98 Ranger Speedo correction?????
Re: FTE Small - 87 Bronco II Reverse Lights
FTE Small - ADMIN: Web site updates
Re: FTE Small - Explorer high revs on starting
Re: FTE Small - Explorer Pinging Update
Re: FTE Small - '98 Ranger Speedo correction?????

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Date: Sun, 11 Apr 1999 15:52:24 GMT
From: alannorthstar mindspring.com
Subject: Re: FTE Small - '98 Ranger Speedo correction?????

On Sun, 11 Apr 1999 01:04:58 -0500, you wrote:


:This is what we were thinking, it apparently takes the speed from
:whatever wheels are turning
:because we unhooked the rear abs lead, and the speedo still worked (this
:ranger happens
:to have the 4 wheel abs, but not all '98s do) at any rate, does your
:owners manual say=20
:anything about how to reset the computer?
:BTW if this doesn't pan out, our current thinking is to build a small
:amplifier circuit with
:a potentiometer and put it inline just before the speedo, and just
:adjust it until the speedo
: reads the right speed (could also be handy for getting out of tickets:)
:
:
:Thanks
:Scott Ford

My sense of that is that the system probably measures the
frequency of the signal, not the strength, so a pot wouldn't
change anything except to possible make the signal too weak to be
sensed at all.

Later,
Alan
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Date: Sun, 11 Apr 1999 08:51:29 -0700
From: JJ Thomas
Subject: Re: FTE Small - '98 Ranger Speedo correction?????

...er, I don't think that will work. Most ABS sensors send a pulse stream
to the computer. The computer counts the pulses and acts accordingly. All
a potentiometer does is lowers the voltage of the pulse, it does not change
the number of pulses.

Admitting that I have not been under the hood of a truck as a mechanic for
a number of years... but I thought the speedo got its information from the
back of the transmission. Is that no longer true?

Not to nit pick, but I think your ticket theory is flawed.;-)

- -Julian

At 01:04 04/11/99 -0500, you wrote (and I edited for brevity):
>
>This is what we were thinking, it apparently takes the speed from
>whatever wheels are turning
>because we unhooked the rear abs lead, and the speedo still worked (this
>ranger happens
>to have the 4 wheel abs, but not all '98s do) at any rate, does your
>owners manual say
>anything about how to reset the computer?
>BTW if this doesn't pan out, our current thinking is to build a small
>amplifier circuit with
>a potentiometer and put it inline just before the speedo, and just
>adjust it until the speedo
> reads the right speed (could also be handy for getting out of tickets:)
>
>
>Thanks
>Scott Ford

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Date: Sat, 10 Apr 1999 09:45:54 -0700
From: rgstein pacbell.net
Subject: FTE Small - '98 Ranger Speedo correction?????

> Scott Ford wrote ------------------------------------
>
(Continuing from my post about info from my Aerostar's manual)

This is what we were thinking, it apparently takes the speed from
whatever wheels are turning
because we unhooked the rear abs lead, and the speedo still worked (this
ranger happens
to have the 4 wheel abs, but not all '98s do) at any rate, does your
owners manual say
anything about how to reset the computer?

Me-------------------------------------------------------------------
No. I feel truly blessed when Ford condescends to provide any
information whatsoever. Ford information is all farmed out to Helm,
which sells the data for the cost of a trip to the emergency room in a
midwestern hospital. (See post elsewhere in this packet.) The
exhorbitant cost of manuals is a good reason to not buy a Ford product.

I didn't find this information in my Alldata/Popular Science CD ROM,
another very dissappointing "manual."

Scott ---------------------------------------------------------------
BTW if this doesn't pan out, our current thinking is to build a small
amplifier circuit with
a potentiometer and put it inline just before the speedo, and just
adjust it until the speedo
reads the right speed (could also be handy for getting out of tickets:)

Me-------------------------------------------------------------------
I almost replied not to try this: the signal is probably digital. But
the gauge sure seems analog. But is it linear? Would the pot throw off
the linearity? I inherited a set of undersized tires with my Aerostar.
And so my speedo reads proportionally low (as a rough figure, I deduct
4-5 mph from the speedo). A mechanic here might point the way. Trouble
is, there are probably very few people who want this reset done.

Richard

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Date: Sun, 11 Apr 1999 11:55:14 PDT
From: "William Bracey"
Subject: FTE Small - 87 Bronco II Reverse Lights

Hello All:

I have a 87 Bronco II. I recently noticed my reverse lights are no
longer working. I was wondering if anyone knows where the reverse
light switch is located on this SUV.

Thanks in Advance!

Nelson Bracey
wnbracey bigfoot.com



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Date: Sun, 11 Apr 1999 15:58:52 EDT
From: Bakend aol.com
Subject: Re: FTE Small - 87 Bronco II Reverse Lights

In a message dated 4/11/99 12:59:17 PM Mountain Daylight Time,
wnbracey hotmail.com writes:

>
> I have a 87 Bronco II. I recently noticed my reverse lights are no
> longer working. I was wondering if anyone knows where the reverse
> light switch is located on this SUV.
>
My 87 Ranger (manual 5spd) has it on the top of the transmission
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Date: Sun, 11 Apr 1999 14:39:42 PDT
From: "William Bracey"
Subject: Re: FTE Small - 87 Bronco II Reverse Lights

I have a 87 Bronco II. It has a 5 speed Manual transmission. I
recently noticed my reverse lights are no longer working. I was
wondering if anyone knows where the reverse light switch is located
on this SUV.

My 87 Ranger (manual 5spd) has it on the top of the transmission

Can you get to it by removing the boot inside the truck or do you
need to get under the truck.

Thanks



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------------------------------

Date: Sun, 11 Apr 1999 17:01:07 -0500
From: Scott Ford
Subject: Re: FTE Small - '98 Ranger Speedo correction?????

rgstein pacbell.net wrote:

> BTW if this doesn't pan out, our current thinking is to build a small
> amplifier circuit with
> a potentiometer and put it inline just before the speedo, and just
> adjust it until the speedo
> reads the right speed (could also be handy for getting out of tickets:)
>
> Me-------------------------------------------------------------------
> I almost replied not to try this: the signal is probably digital. But
> the gauge sure seems analog. But is it linear? Would the pot throw off
> the linearity? I inherited a set of undersized tires with my Aerostar.
> And so my speedo reads proportionally low (as a rough figure, I deduct
> 4-5 mph from the speedo). A mechanic here might point the way. Trouble
> is, there are probably very few people who want this reset done.

I am not sure if it is linear, but it would seem to be. To answer some
of the
other posts here, The amplifier was meant to go just before the
speedometer,
not anywhere in the abs system, as we don't care what speed the abs
system
"sees" as long as it can differentiate speed between wheels. as for the
amplifier,
the way I see the speedo working is simply by varying voltage, much like
a
fuel gauge. i.e. higher voltage=higher speed. and this is what I think
the
computer would spit out to the speedo. again this is all hypothesis, but
I
am interested to try it to see if it works.

If and when we try it, I will post, and report my results.
if it doesn't work, I have a couple of Electrical Engineering Friends
that
may be of further assistance.

Thanks again
Scott Ford


- --
_________________________________________________________________________
'99 Ranger 4X4 Scott Ford
sford umr.edu
'86 Mustang GT Member
'56 Ford F-100 Alpha Psi chapter
Theta Xi Fraternity

http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.umr.edu/~sford
http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.umr.edu/~thetaxi
"Whether you think you can, or think you can't, you are right" Henry
Ford
_________________________________________________________________________
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Date: Sun, 11 Apr 1999 19:25:28 EDT
From: Bakend aol.com
Subject: Re: FTE Small - 87 Bronco II Reverse Lights

In a message dated 4/11/99 3:41:16 PM Mountain Daylight Time,
wnbracey hotmail.com writes:

> Can you get to it by removing the boot inside the truck or do you
> need to get under the truck.
>
I had the tranny out when I "found" mine and it was the only thing I forgot
to unhook! There is not much room to do anything from the top side under the
boot, so I think you have to get at it from the under side. It is a tough
booger to get to either way.
Good luck
Dennis Baken
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------------------------------

Date: Sun, 11 Apr 1999 23:13:30 -0400
From: Ken Payne
Subject: FTE Small - ADMIN: Web site updates

The following updates have been made to the web site:

Pictorial additions:
1956 F100, 1958 F100, 1984 E150

Links:

"The Ranger Station" added.
"Fords of the Fifties" added.

Tech Articles:
"How to convert an oil bath filter to paper element"

Having problems with the flatbed scanner so it will be about
a week before I can post photo submissions. As usual, we
stay about 1 week behind in pictorial submissions.

Ken Payne
Ford Truck Enthusiasts



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Date: Sun, 11 Apr 1999 23:18:32 EDT
From: Ding060297 aol.com
Subject: Re: FTE Small - Explorer high revs on starting

Well since its a 97 i'm assuming its still under warranty so let them
deal with it..But it sounds like somethings sticking and obvioulsy affecting
maybe the tps sensor or other related components...Let them fix it maybe they
will replace a few things for ya.......ding
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------------------------------

Date: Sun, 11 Apr 1999 23:23:52 EDT
From: Ding060297 aol.com
Subject: Re: FTE Small - Explorer Pinging Update

No matter what gas you use ford has designed the truck to run on the
minium octane out there 87 without PINGING so with 10k you shouldn't have it
...Nor should you have to live with it so put the crapiest gas you can find
in it make it ping like crazy and bring it back to them an tell them you want
a loaner car and your not picking up the truck until its fixed and not
pinging anymore..My explorer doesn't ping nor does any other explorer that i
know of so make them fix it before its too late and your stuck with the
problems and out of warranty..See how fast they take your truck in
then..............ding
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------------------------------

Date: Sun, 11 Apr 1999 23:38:48 -0400
From: Jean Marc Chartier
Subject: Re: FTE Small - '98 Ranger Speedo correction?????

Scott Ford wrote:
>
> rgstein pacbell.net wrote:
>
> > BTW if this doesn't pan out, our current thinking is to build a small
> > amplifier circuit with
> > a potentiometer and put it inline just before the speedo, and just
> > adjust it until the speedo
> > reads the right speed (could also be handy for getting out of tickets:)
> >
> > Me-------------------------------------------------------------------
> > I almost replied not to try this: the signal is probably digital. But
> > the gauge sure seems analog. But is it linear? Would the pot throw off
> > the linearity? I inherited a set of undersized tires with my Aerostar.
> > And so my speedo reads proportionally low (as a rough figure, I deduct
> > 4-5 mph from the speedo). A mechanic here might point the way. Trouble
> > is, there are probably very few people who want this reset done.
>
> I am not sure if it is linear, but it would seem to be. To answer some
> of the
> other posts here, The amplifier was meant to go just before the
> speedometer,
> not anywhere in the abs system, as we don't care what speed the abs
> system
> "sees" as long as it can differentiate speed between wheels. as for the
> amplifier,
> the way I see the speedo working is simply by varying voltage, much like
> a
> fuel gauge. i.e. higher voltage=higher speed. and this is what I think
> the
> computer would spit out to the speedo. again this is all hypothesis, but
> I
> am interested to try it to see if it works.
>
> If and when we try it, I will post, and report my results.
> if it doesn't work, I have a couple of Electrical Engineering Friends
> that
> may be of further assistance.
>
> Thanks again
> Scott Ford
>
> --
> _________________________________________________________________________
> '99 Ranger 4X4 Scott Ford
> sford umr.edu
> '86 Mustang GT Member
> '56 Ford F-100 Alpha Psi chapter
> Theta Xi Fraternity
>
> http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.umr.edu/~sford
> http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.umr.edu/~thetaxi
> "Whether you think you can, or think you can't, you are right" Henry
> Ford
> _________________________________________________________________________

Scott,

I would suspect that your speedo uses a signal Vehicle
Speed Sensor(VSS) driven by the speedo gear in the
transmission tail housing. On 4x4 it might be
in the Transfer case. The 97+ F150s have the same 5spd
manual as the Rangers, Mazda built M5OD. The VSS generates
an A/C signal whose signal is proportional to vehicle
speed. I have a 97 F150 4x4 and to change the speedo
....


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