945 seat motor fire - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > PAG Vehicle Discussion > Volvo
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 04-03-2005, 22:01   #1 (permalink)
Howard Nelson
Guest
 
Posts: n/a
945 seat motor fire

Today while my daughter was driving our 1993 945T began to release smoke
from under the drivers seat (memory power seat). Pulled over, shut down
engine and got out. Smoke continued and then flames rose over the front edge
of the seat. Fire was put out with extinguisher and on examination all the
electronics (motor, controller, wiring) under the seat was fried and the
carpet and seat upholsetery burnt.

I can understand electrical shorts and the re******t heat but the 30A fuse
controlling the seat had blown so why did the motor/controller burn up and
start a fire? The problem was the seat motor and not the seat heater. No
other fuses blew.
Anyone had something like this happen to them? Any thoughts why burning
continued to the point of flames when fuse had blown (oil from motor?)? Any
source for replacement parts or seat (nothing good on ebay at this time).
Thanks for any information you can provide.
Howard


  Reply With Quote
Sponsored Links
Advertisement
 
Old 04-04-2005, 18:01   #2 (permalink)
Glenn Klein
Guest
 
Posts: n/a
Re: 945 seat motor fire

Howard Nelson wrote:
> Today while my daughter was driving our 1993 945T began to release smoke
> from under the drivers seat (memory power seat). Pulled over, shut down
> engine and got out. Smoke continued and then flames rose over the front edge
> of the seat. Fire was put out with extinguisher and on examination all the
> electronics (motor, controller, wiring) under the seat was fried and the
> carpet and seat upholsetery burnt.
>
> I can understand electrical shorts and the re******t heat but the 30A fuse
> controlling the seat had blown so why did the motor/controller burn up and
> start a fire? The problem was the seat motor and not the seat heater. No
> other fuses blew.
> Anyone had something like this happen to them? Any thoughts why burning
> continued to the point of flames when fuse had blown (oil from motor?)? Any
> source for replacement parts or seat (nothing good on ebay at this time).
> Thanks for any information you can provide.
> Howard
>
>

Contact Volvo Customer Service & tell them what happened as this is a
issue that I have not run in to yet. Do not know what help they may or
may not offer you but it can not hurt to go on record with them about this
Glenn

--
"*-344-*Never Forgotten"
Is for the New York City Firemen who lost their lives on September 11,2001.
The official count is 343, but there was also a volunteer who lost his life
aiding in the initial rescue efforts. And I will never forget them as
long as I live,
nor should any American.
  Reply With Quote
Old 04-05-2005, 02:01   #3 (permalink)
James Sweet
Guest
 
Posts: n/a
Re: 945 seat motor fire


"Howard Nelson" <htnelsonvip@pacbell.net> wrote in message
news:gU24e.1249$qD2.77@newssvr14.news.prodigy.com...
> Today while my daughter was driving our 1993 945T began to release smoke
> from under the drivers seat (memory power seat). Pulled over, shut down
> engine and got out. Smoke continued and then flames rose over the front

edge
> of the seat. Fire was put out with extinguisher and on examination all the
> electronics (motor, controller, wiring) under the seat was fried and the
> carpet and seat upholsetery burnt.
>
> I can understand electrical shorts and the re******t heat but the 30A fuse
> controlling the seat had blown so why did the motor/controller burn up and
> start a fire? The problem was the seat motor and not the seat heater. No
> other fuses blew.
> Anyone had something like this happen to them? Any thoughts why burning
> continued to the point of flames when fuse had blown (oil from motor?)?

Any
> source for replacement parts or seat (nothing good on ebay at this time).
> Thanks for any information you can provide.
> Howard
>
>


Yikes! Can you tell where the fire started? Was it the motor itself or the
wiring? It's entirely possible that a wire chafed, grounded out, and had
enough resistance that it didn't blow the fuse before heating up hot enough
to burn the insulation off, though it does surprise me that it actually
caught fire, that's kinda scary.

Best I can suggest for parts is a wrecking yard, or see if you can file an
insurance claim and get the parts from Volvo, but a wrecking yard is sure to
be far cheaper, even a nicer one with newer cars.


  Reply With Quote
Old 04-05-2005, 11:02   #4 (permalink)
Stephen Henning
Guest
 
Posts: n/a
Re: 945 seat motor fire

Howard Nelson wrote:
> I can understand electrical shorts and the re******t heat but the 30A fuse
> controlling the seat had blown so why did the motor/controller burn up and
> start a fire? The problem was the seat motor and not the seat heater. No
> other fuses blew.


What probably happened is that the seat heater overheated and shorted to
the motor and burned out the motor fuse but continued to burn the seat.
That explains why when the fuse burned out it didn't stop the fire, it
was the wrong fuse. The seat heater can cause a fire and does when the
thermostat fails.
--
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.
http://home.earthlink.net/~rhodyman/volvo.html
  Reply With Quote
Old 04-05-2005, 11:02   #5 (permalink)
Howard Nelson
Guest
 
Posts: n/a
Re: 945 seat motor fire


"Stephen Henning" <pighash@aol.com> wrote in message
news:pighash-A333C4.11581405042005@news.isp.giganews.com...
> Howard Nelson wrote:
> > I can understand electrical shorts and the re******t heat but the 30A

fuse
> > controlling the seat had blown so why did the motor/controller burn up

and
> > start a fire? The problem was the seat motor and not the seat heater. No
> > other fuses blew.

>
> What probably happened is that the seat heater overheated and shorted to
> the motor and burned out the motor fuse but continued to burn the seat.
> That explains why when the fuse burned out it didn't stop the fire, it
> was the wrong fuse. The seat heater can cause a fire and does when the
> thermostat fails.
> --
> Cheers, Steve Henning in Reading, PA, USA
> Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
> The '67,'74,'79,'87,'95 and '01 through European Delivery.
> http://home.earthlink.net/~rhodyman/volvo.html


Seat heater is fine. Fire under seat centered at motor and controller unit.

Howard


  Reply With Quote
Old 04-05-2005, 21:01   #6 (permalink)
James Sweet
Guest
 
Posts: n/a
Re: 945 seat motor fire


"Howard Nelson" <htnelsonvip@pacbell.net> wrote in message
news:4Qy4e.1760$qD2.450@newssvr14.news.prodigy.com...
>
> "Stephen Henning" <pighash@aol.com> wrote in message
> news:pighash-A333C4.11581405042005@news.isp.giganews.com...
> > Howard Nelson wrote:
> > > I can understand electrical shorts and the re******t heat but the 30A

> fuse
> > > controlling the seat had blown so why did the motor/controller burn up

> and
> > > start a fire? The problem was the seat motor and not the seat heater.

No
> > > other fuses blew.

> >
> > What probably happened is that the seat heater overheated and shorted to
> > the motor and burned out the motor fuse but continued to burn the seat.
> > That explains why when the fuse burned out it didn't stop the fire, it
> > was the wrong fuse. The seat heater can cause a fire and does when the
> > thermostat fails.
> > --
> > Cheers, Steve Henning in Reading, PA, USA
> > Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
> > The '67,'74,'79,'87,'95 and '01 through European Delivery.
> > http://home.earthlink.net/~rhodyman/volvo.html

>
> Seat heater is fine. Fire under seat centered at motor and controller

unit.
>
> Howard
>


It was probably the wire, or maybe a connector that overheated. I've shorted
a couple wires connected to high current 12v sources before and it's
shocking how quickly the insulation practically vaporizes, though I haven't
yet had one actually catch fire.


  Reply With Quote
Old 04-05-2005, 21:01   #7 (permalink)
Stephen Henning
Guest
 
Posts: n/a
Re: 945 seat motor fire

"Howard Nelson" <htnelsonvip@pacbell.net> wrote:

> Seat heater is fine. Fire under seat centered at motor and controller unit.


What is there to burn in a motor? The control unit is the biggest
candidate. I had a smoke detector that started a fire. Control
circuitry can start fires easily. When I was a physicist at AT&T, one
of my jobs was designing electronic components so they were not
flammable. The plastic parts are very flammable and once the fire is
started the fire continues even after the fuse blows. We solved the
problem by making all components connected to the power source
non-flammable. They were made of flammable resins but were designed so
they would always fail safely by cracking before they ignited. This
always prevented a fire.
--
Cheers, Steve Henning in Reading, PA, USA
Owned '67,'68,'71,'74,'79,'81,'87,'93,'95 & '01 Volvos.
The '67,'74,'79,'87,'95 and '01 through European Delivery.
http://home.earthlink.net/~rhodyman/volvo.html
  Reply With Quote
Old 04-06-2005, 09:01   #8 (permalink)
Stephen Henning
Guest
 
Posts: n/a
Re: 945 seat motor fire

"James Sweet" <jamessweet@hotmail.com> wrote:

> It was probably the wire, or maybe a connector that overheated. I've shorted
> a couple wires connected to high current 12v sources before and it's
> shocking how quickly the insulation practically vaporizes, though I haven't
> yet had one actually catch fire.


The fuse is to keep the wire from catching on fire. The way to prevent
fires is to have a smaller section of bare wire that melts before the
insulation catches on fire (i.e., a fuse or fusible link). When I did
this type of work I had a 200 amp power supply and could make just about
anything catch on fire.

--
Pardon my spam deterrent; send email to rhodyman@earthlink.net
Cheers, Steve Henning in Reading, PA USA
http://home.earthlink.net/~rhodyman
  Reply With Quote
Old 04-08-2005, 20:01   #9 (permalink)
James Sweet
Guest
 
Posts: n/a
Re: 945 seat motor fire


"Stephen Henning" <pighash@aol.com> wrote in message
news:pighash-19233F.23431505042005@news.isp.giganews.com...
> "Howard Nelson" <htnelsonvip@pacbell.net> wrote:
>
> > Seat heater is fine. Fire under seat centered at motor and controller

unit.
>
> What is there to burn in a motor? The control unit is the biggest
> candidate. I had a smoke detector that started a fire. Control
> circuitry can start fires easily. When I was a physicist at AT&T, one
> of my jobs was designing electronic components so they were not
> flammable. The plastic parts are very flammable and once the fire is
> started the fire continues even after the fuse blows. We solved the
> problem by making all components connected to the power source
> non-flammable. They were made of flammable resins but were designed so
> they would always fail safely by cracking before they ignited. This
> always prevented a fire.
> --



Reminds me that I should really get fire extinguishers to keep in my cars,
I've seen enough cars of all makes burned to a crisp in junkyards and heard
just enough stories that a $20 compact extiguisher is cheap insurance.


  Reply With Quote
Old 04-08-2005, 20:01   #10 (permalink)
James Sweet
Guest
 
Posts: n/a
Re: 945 seat motor fire


"Stephen Henning" <pighash@aol.com> wrote in message
news:pighash-20DE84.09555106042005@news.isp.giganews.com...
> "James Sweet" <jamessweet@hotmail.com> wrote:
>
> > It was probably the wire, or maybe a connector that overheated. I've

shorted
> > a couple wires connected to high current 12v sources before and it's
> > shocking how quickly the insulation practically vaporizes, though I

haven't
> > yet had one actually catch fire.

>
> The fuse is to keep the wire from catching on fire. The way to prevent
> fires is to have a smaller section of bare wire that melts before the
> insulation catches on fire (i.e., a fuse or fusible link). When I did
> this type of work I had a 200 amp power supply and could make just about
> anything catch on fire.
>
>


In an ideal world the fuse would always blow to prevent a fire, but it's
entirely possible for a connector to corrode enough to limit the current
just enough to burn up the wire without actually blowing the fuse.


  Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > PAG Vehicle Discussion > Volvo



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 18:45.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.