Horton Fan

[Donald Spithaler]

Jim
I replaced mine two years ago but I didn't think it was the thermostat that sent a signal to engage the fan.
Don Spithaler
89 SP 36'
Butler, PA

On Mon, Nov 24, 2008 at 9:30 PM, jim riordan <"jqrjr@yahoo.com"> wrote:

190• That's what my thermostat is manufactured for



Jim Riordan

--- Don Spithaler <"dspithaler%40gmail.com"> wrote:



> Guys

> I put a small light at the dash to let me know when

> my fan comes on.

> I took it out on the road today to check it out. It

> was cold today & I

> saw the fan coming on & off at about 170 degree.

> That seems to cold

> for the fan to be coming on & off. What do you

> think? What is the

> sender set at & does anybody know what degree it

> should come on at. I

> always though the fan was running more that it

> should.

> Don Spithaler

> 89 SP 36'

> Butler, PA

>

>

[birdshill123]

The sensor for the Horton fan is screwed into the block just under the
alternator ( on an FC). It is a tight spot. Sensor looks just like a
temperature sensor. They are wired strangely. Look closely at the old
one to see both the temp. and if it is NC or NO. Mine was NC. They are
available at most HD truck dealers.


Bruce
1988 FC35

[Donald Spithaler]

Hi Bruce
Will that give me the correct temp. Does yours cycle on & off a lot? Is there a way to check the sensor to make sure it is coming on at the correct temp? Thanks
Don Spithaler
89 SP 36'

Butler, PA

On Tue, Nov 25, 2008 at 8:03 AM, birdshill123 <"birdshill123@yahoo.com"> wrote:

The sensor for the Horton fan is screwed into the block just under the

alternator ( on an FC). It is a tight spot. Sensor looks just like a

temperature sensor. They are wired strangely. Look closely at the old

one to see both the temp. and if it is NC or NO. Mine was NC. They are

available at most HD truck dealers.



Bruce

1988 FC35

[pattypape]

Hi Don,

With the Outside Temps in Pennsylvania, the 3208 should not get hot
enough to trip the fan temp sensor, Unless you can put a heavy load
on in the foothills. Our 88 FC trips at about 190/195 and quickly
returns to 180/185. Some one may have changed the sensor, the temp
may be stamped on the sensor, But you will probably need to remove it.
The only other way that I am avare of; is to put it is a pot of
water with Ohm meter wires attached, and with another mechanical
thermometer, and gradually raise the temp. This will check the
switching temp.

Bill 88 FC michigan

--- In WanderlodgeForum@yahoogroups.com, "Donald Spithaler"
wrote:
>
> Hi Bruce
> Will that give me the correct temp. Does yours cycle on & off a
lot? Is
> there a way to check the sensor to make sure it is coming on at the
correct
> temp? Thanks
> Don Spithaler
> 89 SP 36'
> Butler, PA
>
> On Tue, Nov 25, 2008 at 8:03 AM, birdshill123
wrote:
>
> > The sensor for the Horton fan is screwed into the block just
under the
> > alternator ( on an FC). It is a tight spot. Sensor looks just
like a
> > temperature sensor. They are wired strangely. Look closely at the
old
> > one to see both the temp. and if it is NC or NO. Mine was NC.
They are
> > available at most HD truck dealers.
> >
> > Bruce
> > 1988 FC35
> >
> >
> >
>

[Donald Spithaler]

Bill
Is this the only sensor that would cause the fan to cycle? The other day when I was out it was cold & I didn't think it should be cycling on & off. I'll try that to see if the sensor is the problem. I want to get it fixed

Don Spithaler
89 SP 36'
Butler, PA

2008 at 1:23 PM, pattypape <"billpatty@hotmail.com"> wrote:

Hi Don,



With the Outside Temps in Pennsylvania, the 3208 should not get hot

enough to trip the fan temp sensor, Unless you can put a heavy load

on in the foothills. Our 88 FC trips at about 190/195 and quickly

returns to 180/185. Some one may have changed the sensor, the temp

may be stamped on the sensor, But you will probably need to remove it.

The only other way that I am avare of; is to put it is a pot of

water with Ohm meter wires attached, and with another mechanical

thermometer, and gradually raise the temp. This will check the

switching temp.



Bill 88 FC michigan



--- In "WanderlodgeForum%40yahoogroups.com", "Donald Spithaler"

wrote:

>

> Hi Bruce

> Will that give me the correct temp. Does yours cycle on & off a

lot? Is

> there a way to check the sensor to make sure it is coming on at the

correct

> temp? Thanks

> Don Spithaler

> 89 SP 36'

> Butler, PA

>

> On Tue, Nov 25, 2008 at 8:03 AM, birdshill123

wrote:

>

> > The sensor for the Horton fan is screwed into the block just

under the

> > alternator ( on an FC). It is a tight spot. Sensor looks just

like a

> > temperature sensor. They are wired strangely. Look closely at the

old

> > one to see both the temp. and if it is NC or NO. Mine was NC.

They are

> > available at most HD truck dealers.

> >

> > Bruce

> > 1988 FC35

> >

> >

> >

>

[birdshill123]

Don:

Have you considered it could be the wiring? Have you found the sesnor
under the alternator? Chek that the wires are attached properly. Maybe
the wires cooked and have become brittle giving you intemittent
contact. I would check the wiring first. Then do as Bill and I
suggested and remove the sensor and test. I dont know what it is like
on an SP but on the FC it is a fun job. I had to use a deep 1/2 inch
drive socket and a super long Johnson bar to loosen the sensor. I guess
they sieze to the block threads.


Bruce
1988 FC35

[Donald Spithaler]

Bruce
I haven't been able to get to it yet. We have been getting some nasty weather this week. I'll check the wires first. That is a good point. It probably won't be that easy.
Don Spithaler
89 SP 36'

Butler, PA

On Wed, Nov 26, 2008 at 5:58 PM, birdshill123 <"birdshill123@yahoo.com"> wrote:

Don Spithaler

Have you considered it could be the wiring? Have you found the sesnor

under the alternator? Chek that the wires are attached properly. Maybe

the wires cooked and have become brittle giving you intemittent

contact. I would check the wiring first. Then do as Bill and I

suggested and remove the sensor and test. I dont know what it is like

on an SP but on the FC it is a fun job. I had to use a deep 1/2 inch

drive socket and a super long Johnson bar to loosen the sensor. I guess

they sieze to the block threads.



Bruce

1988 FC35

[Donald Spithaler]

Thanks Guys
It was the Horton Fan sensor. I have a light on my dash that I installed to tell when the fan is cycling on & off. and on a short trip out today the fan was coming on at 195 & off at 188. I really like to know when the fan is running.

Don Spithaler
89 SP 36'
Butler, PA

On Wed, Nov 26, 2008 at 5:58 PM, birdshill123 <"birdshill123@yahoo.com"> wrote:

Don:



Have you considered it could be the wiring? Have you found the sesnor

under the alternator? Chek that the wires are attached properly. Maybe

the wires cooked and have become brittle giving you intemittent

contact. I would check the wiring first. Then do as Bill and I

suggested and remove the sensor and test. I dont know what it is like

on an SP but on the FC it is a fun job. I had to use a deep 1/2 inch

drive socket and a super long Johnson bar to loosen the sensor. I guess

they sieze to the block threads.



Bruce

1988 FC35

[Gardner Yeaw]

Don,
In my FC I need ear plugs when the fan goes on. No light necessary.

Gardner
83FC35

--- In WanderlodgeForum@yahoogroups.com, "Donald Spithaler"
wrote:
>
> Thanks Guys
> It was the Horton Fan sensor. I have a light on my dash that I
installed
> to tell when the fan is cycling on & off. and on a short trip out
today the
> fan was coming on at 195 & off at 188. I really like to know when
the fan is
> running.
> Don Spithaler
> 89 SP 36'
> Butler, PA
>
> On Wed, Nov 26, 2008 at 5:58 PM, birdshill123
wrote:
>
> > Don:
> >
> > Have you considered it could be the wiring? Have you found the
sesnor
> > under the alternator? Chek that the wires are attached properly.
Maybe
> > the wires cooked and have become brittle giving you intemittent
> > contact. I would check the wiring first. Then do as Bill and I
> > suggested and remove the sensor and test. I dont know what it is
like
> > on an SP but on the FC it is a fun job. I had to use a deep 1/2
inch
> > drive socket and a super long Johnson bar to loosen the sensor. I
guess
> > they sieze to the block threads.
> >
> > Bruce
> > 1988 FC35
> >
> >
> >
>