Diode (?) in heater resistor pack
#11
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I agree with DougW,
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
#12
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I agree with DougW,
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
#13
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I agree with DougW,
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
I had also thought it was a thermal fuse like on some of the VWs that I work
on.
You should be able to just replace it and save some $$$. ;-)
later,
dave AKA vwdoc1
88 GW
88 XJ
"DougW" <post.replies@invalid.address> wrote in message
news:9%VBd.4478$2_4.3947@okepread06...
> Pat Moore did pass the time by typing:
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>
> Any numbers on it or bands?
>
> Can you post a pic of it to alt.binaries.pictures.autos.4x4
> or a link?
>
> http://tinyurl.com/465fj
> (radioshack)
>
> If it's just a diode you can use any rectifier diode that
> is rated high enough for the motor current. Overkill is fine.
> 276-1661 or 276-1653
>
> However, it could be a different animial. You could be looking
> at a thermal fuse designed to turn off the system should the
> resistor pack overheat due to a seized motor.
> http://www.thermodisc.com/productdet...p?ProductID=30
> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
> (lacks pictures)
> http://www.circuitspecialists.com/prod.itml/icOid/5704
>
>
> --
> DougW
>
#14
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I ran thru my service manual and couldn't find a description of what the
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
#15
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I ran thru my service manual and couldn't find a description of what the
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
#16
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I ran thru my service manual and couldn't find a description of what the
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
diode is for. Well, my patiend ran out (thick book)....but it sure does
list how to replace it more than once.
I'd hazard a guess that the motors have thermal shutdown themselves (most of
them do for the last bunch of years).
Anyhow, replace it....I couldn't find a part number in my book, but
hopefully there's something left of your diode that you can read the numbers
off of.
cheers
"dave AKA vwdoc1" <vwdoc1@ameritech.net> wrote in message
news:Ti1Cd.9697$by5.7957@newssvr19.news.prodigy.co m...
>I agree with DougW,
> I had also thought it was a thermal fuse like on some of the VWs that I
> work on.
> You should be able to just replace it and save some $$$. ;-)
>
> later,
> dave AKA vwdoc1
> 88 GW
> 88 XJ
>
> "DougW" <post.replies@invalid.address> wrote in message
> news:9%VBd.4478$2_4.3947@okepread06...
>> Pat Moore did pass the time by typing:
>>> We're working on a friend's "new" 94 Cherokee and have replaced the
>>> busted
>>> heater fan motor. We then tracked why the fan only worked on "High" to
>>> an
>>> open
>>> component in the heater resistor. It's shown as a switch in the wiring
>>> diagram, and physically resembles a silicon diode. Shorting across it
>>> restored all four fan speeds. Does anyone know what that diode-looking
>>> thing
>>> is? And why it's there? I hate to buy a new resistor pack just to
>>> replace
>>> the diode (?).
>>
>> Any numbers on it or bands?
>>
>> Can you post a pic of it to alt.binaries.pictures.autos.4x4
>> or a link?
>>
>> http://tinyurl.com/465fj
>> (radioshack)
>>
>> If it's just a diode you can use any rectifier diode that
>> is rated high enough for the motor current. Overkill is fine.
>> 276-1661 or 276-1653
>>
>> However, it could be a different animial. You could be looking
>> at a thermal fuse designed to turn off the system should the
>> resistor pack overheat due to a seized motor.
>> http://www.thermodisc.com/productdet...p?ProductID=30
>> http://www.partsexpress.com/webpage.cfm?WebPage_ID=63
>> (lacks pictures)
>> http://www.circuitspecialists.com/prod.itml/icOid/5704
>>
>>
>> --
>> DougW
>>
>
>
#17
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
It's a thermal fuse. You can get a replacement at Radio shack or just solder
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
#18
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
It's a thermal fuse. You can get a replacement at Radio shack or just solder
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
#19
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
It's a thermal fuse. You can get a replacement at Radio shack or just solder
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
a wire around it. Mine blew because the motor needed lubed. Yes, it's just
like the one used on VW's.
JoBo
"Pat Moore" <pmoore@gatecliff.com> wrote in message
news:10tg90dga95ta10@corp.supernews.com...
> We're working on a friend's "new" 94 Cherokee and have replaced the busted
> heater fan motor. We then tracked why the fan only worked on "High" to an
> open
> component in the heater resistor. It's shown as a switch in the wiring
> diagram, and physically resembles a silicon diode. Shorting across it
> restored all four fan speeds. Does anyone know what that diode-looking
> thing
> is? And why it's there? I hate to buy a new resistor pack just to replace
> the diode (?).
>
>
#20
Guest
Posts: n/a
Re: Diode (?) in heater resistor pack
I've heard Bill and Mike both talk about a separate diode that's been
replaced at times....what is this diode for?
Again, I can find the replacement instructions for it in my service manual,
but haven't been able to find a description of what it's for!
"Jo Bo" <jromas@columbus.rr.com> wrote in message
news:6_9Cd.3818$iu5.37@fe2.columbus.rr.com...
> It's a thermal fuse. You can get a replacement at Radio shack or just
> solder a wire around it. Mine blew because the motor needed lubed. Yes,
> it's just like the one used on VW's.
>
> JoBo
>
> "Pat Moore" <pmoore@gatecliff.com> wrote in message
> news:10tg90dga95ta10@corp.supernews.com...
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>>
>>
>
>
replaced at times....what is this diode for?
Again, I can find the replacement instructions for it in my service manual,
but haven't been able to find a description of what it's for!
"Jo Bo" <jromas@columbus.rr.com> wrote in message
news:6_9Cd.3818$iu5.37@fe2.columbus.rr.com...
> It's a thermal fuse. You can get a replacement at Radio shack or just
> solder a wire around it. Mine blew because the motor needed lubed. Yes,
> it's just like the one used on VW's.
>
> JoBo
>
> "Pat Moore" <pmoore@gatecliff.com> wrote in message
> news:10tg90dga95ta10@corp.supernews.com...
>> We're working on a friend's "new" 94 Cherokee and have replaced the
>> busted
>> heater fan motor. We then tracked why the fan only worked on "High" to
>> an
>> open
>> component in the heater resistor. It's shown as a switch in the wiring
>> diagram, and physically resembles a silicon diode. Shorting across it
>> restored all four fan speeds. Does anyone know what that diode-looking
>> thing
>> is? And why it's there? I hate to buy a new resistor pack just to replace
>> the diode (?).
>>
>>
>
>