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Re: 89 Cherokee Blower only working on Hi-speed...
I think if you run the heater on recirculating air too long, it can
overheat the system, but you could have a good point about an old motor starting to draw too much. Our motor went that way and killed the switch. It melted it down. Resistor pack stayed ok. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Dave wrote: > > I always wonder why the resistor pack blows that thermo fuse??? > I was told it is caused by a blower that demands a little too much current. > :-( > > Keep your old pack and install a new fuse in it. I believe that Radio Shack > may sell them cheaply. > later, > dave > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > news:Rbcbb.10121$KJ5.251@fe2.columbus.rr.com... > > Well, I found the problem. It was the resistor pack. Got one from the > > dealer today for $17 and some change. Installed it and voila, I have a > > multi-speed blower once again! Awesome! > > Thank you so much for your help with this! > > > > Regards, > > Gary B. > > > > > > " Stephen Cowell" <scowell@sbcglobal.net> wrote in message > > news:VM0bb.1320$Q63.249@newssvr23.news.prodigy.com ... > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > news:umZab.15408$uJ2.8084@fe3.columbus.rr.com... > > > > I would appreciate any help or advise that anyone could give me to fix > > > this > > > > problem I'm having with my 89 Cherokee. My blower fan works on High > > speed > > > > only and not at all on the lower speeds. Would this mean my switch is > > > "bad" > > > > or the resistor needsreplacing? Is there any way to fix/clean the > > switch > > > > short of replacing it? > > > > > > Could be switch or resistor pack... you'll have to troubleshoot > > > it. Easiest would be to pull the resistor pack and examine it... > > > basically pieces of coiled nichrome wire. The wire should be > > > solid; you should get low ohms with an ohmmeter check. > > > > > > Some resistor packs have a temperature limiting fuse, > > > if the pack gets too hot, the fuse opens and voila, > > > you need a new pack. Bypassing the fuse to > > > repair the pack is not for the faint of heart. > > > __ > > > Steve > > > . > > > > > > > > > > |
Re: 89 Cherokee Blower only working on Hi-speed...
FYI, I also had to replace the blower within the past week. For a few
months before I owned the XJ, you would run the blower and could here a bearing/grinding noise coming from the blower. Maybe this helped the resistor pack to an early grave?? Regards, Gary "Mike Romain" <romainm@sympatico.ca> wrote in message news:3F6DB32B.7AC6CD24@sympatico.ca... > I think if you run the heater on recirculating air too long, it can > overheat the system, but you could have a good point about an old motor > starting to draw too much. > > Our motor went that way and killed the switch. It melted it down. > Resistor pack stayed ok. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > > Dave wrote: > > > > I always wonder why the resistor pack blows that thermo fuse??? > > I was told it is caused by a blower that demands a little too much current. > > :-( > > > > Keep your old pack and install a new fuse in it. I believe that Radio Shack > > may sell them cheaply. > > later, > > dave > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > news:Rbcbb.10121$KJ5.251@fe2.columbus.rr.com... > > > Well, I found the problem. It was the resistor pack. Got one from the > > > dealer today for $17 and some change. Installed it and voila, I have a > > > multi-speed blower once again! Awesome! > > > Thank you so much for your help with this! > > > > > > Regards, > > > Gary B. > > > > > > > > > " Stephen Cowell" <scowell@sbcglobal.net> wrote in message > > > news:VM0bb.1320$Q63.249@newssvr23.news.prodigy.com ... > > > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > > news:umZab.15408$uJ2.8084@fe3.columbus.rr.com... > > > > > I would appreciate any help or advise that anyone could give me to fix > > > > this > > > > > problem I'm having with my 89 Cherokee. My blower fan works on High > > > speed > > > > > only and not at all on the lower speeds. Would this mean my switch is > > > > "bad" > > > > > or the resistor needsreplacing? Is there any way to fix/clean the > > > switch > > > > > short of replacing it? > > > > > > > > Could be switch or resistor pack... you'll have to troubleshoot > > > > it. Easiest would be to pull the resistor pack and examine it... > > > > basically pieces of coiled nichrome wire. The wire should be > > > > solid; you should get low ohms with an ohmmeter check. > > > > > > > > Some resistor packs have a temperature limiting fuse, > > > > if the pack gets too hot, the fuse opens and voila, > > > > you need a new pack. Bypassing the fuse to > > > > repair the pack is not for the faint of heart. > > > > __ > > > > Steve > > > > . > > > > > > > > > > > > > > |
Re: 89 Cherokee Blower only working on Hi-speed...
FYI, I also had to replace the blower within the past week. For a few
months before I owned the XJ, you would run the blower and could here a bearing/grinding noise coming from the blower. Maybe this helped the resistor pack to an early grave?? Regards, Gary "Mike Romain" <romainm@sympatico.ca> wrote in message news:3F6DB32B.7AC6CD24@sympatico.ca... > I think if you run the heater on recirculating air too long, it can > overheat the system, but you could have a good point about an old motor > starting to draw too much. > > Our motor went that way and killed the switch. It melted it down. > Resistor pack stayed ok. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > > Dave wrote: > > > > I always wonder why the resistor pack blows that thermo fuse??? > > I was told it is caused by a blower that demands a little too much current. > > :-( > > > > Keep your old pack and install a new fuse in it. I believe that Radio Shack > > may sell them cheaply. > > later, > > dave > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > news:Rbcbb.10121$KJ5.251@fe2.columbus.rr.com... > > > Well, I found the problem. It was the resistor pack. Got one from the > > > dealer today for $17 and some change. Installed it and voila, I have a > > > multi-speed blower once again! Awesome! > > > Thank you so much for your help with this! > > > > > > Regards, > > > Gary B. > > > > > > > > > " Stephen Cowell" <scowell@sbcglobal.net> wrote in message > > > news:VM0bb.1320$Q63.249@newssvr23.news.prodigy.com ... > > > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > > news:umZab.15408$uJ2.8084@fe3.columbus.rr.com... > > > > > I would appreciate any help or advise that anyone could give me to fix > > > > this > > > > > problem I'm having with my 89 Cherokee. My blower fan works on High > > > speed > > > > > only and not at all on the lower speeds. Would this mean my switch is > > > > "bad" > > > > > or the resistor needsreplacing? Is there any way to fix/clean the > > > switch > > > > > short of replacing it? > > > > > > > > Could be switch or resistor pack... you'll have to troubleshoot > > > > it. Easiest would be to pull the resistor pack and examine it... > > > > basically pieces of coiled nichrome wire. The wire should be > > > > solid; you should get low ohms with an ohmmeter check. > > > > > > > > Some resistor packs have a temperature limiting fuse, > > > > if the pack gets too hot, the fuse opens and voila, > > > > you need a new pack. Bypassing the fuse to > > > > repair the pack is not for the faint of heart. > > > > __ > > > > Steve > > > > . > > > > > > > > > > > > > > |
Re: 89 Cherokee Blower only working on Hi-speed...
Very likely. As they wear out, they draw a lot of power and generate
heat in the lines. Mike "Gary B." wrote: > > FYI, I also had to replace the blower within the past week. For a few > months before I owned the XJ, you would run the blower and could here a > bearing/grinding noise coming from the blower. Maybe this helped the > resistor pack to an early grave?? > > Regards, > Gary > > "Mike Romain" <romainm@sympatico.ca> wrote in message > news:3F6DB32B.7AC6CD24@sympatico.ca... > > I think if you run the heater on recirculating air too long, it can > > overheat the system, but you could have a good point about an old motor > > starting to draw too much. > > > > Our motor went that way and killed the switch. It melted it down. > > Resistor pack stayed ok. > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > 88 Cherokee 235 BFG AT's > > > > Dave wrote: > > > > > > I always wonder why the resistor pack blows that thermo fuse??? > > > I was told it is caused by a blower that demands a little too much > current. > > > :-( > > > > > > Keep your old pack and install a new fuse in it. I believe that Radio > Shack > > > may sell them cheaply. > > > later, > > > dave > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > news:Rbcbb.10121$KJ5.251@fe2.columbus.rr.com... > > > > Well, I found the problem. It was the resistor pack. Got one from > the > > > > dealer today for $17 and some change. Installed it and voila, I have > a > > > > multi-speed blower once again! Awesome! > > > > Thank you so much for your help with this! > > > > > > > > Regards, > > > > Gary B. > > > > > > > > > > > > " Stephen Cowell" <scowell@sbcglobal.net> wrote in message > > > > news:VM0bb.1320$Q63.249@newssvr23.news.prodigy.com ... > > > > > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > > > news:umZab.15408$uJ2.8084@fe3.columbus.rr.com... > > > > > > I would appreciate any help or advise that anyone could give me to > fix > > > > > this > > > > > > problem I'm having with my 89 Cherokee. My blower fan works on > High > > > > speed > > > > > > only and not at all on the lower speeds. Would this mean my > switch is > > > > > "bad" > > > > > > or the resistor needsreplacing? Is there any way to fix/clean the > > > > switch > > > > > > short of replacing it? > > > > > > > > > > Could be switch or resistor pack... you'll have to troubleshoot > > > > > it. Easiest would be to pull the resistor pack and examine it... > > > > > basically pieces of coiled nichrome wire. The wire should be > > > > > solid; you should get low ohms with an ohmmeter check. > > > > > > > > > > Some resistor packs have a temperature limiting fuse, > > > > > if the pack gets too hot, the fuse opens and voila, > > > > > you need a new pack. Bypassing the fuse to > > > > > repair the pack is not for the faint of heart. > > > > > __ > > > > > Steve > > > > > . > > > > > > > > > > > > > > > > > > |
Re: 89 Cherokee Blower only working on Hi-speed...
Very likely. As they wear out, they draw a lot of power and generate
heat in the lines. Mike "Gary B." wrote: > > FYI, I also had to replace the blower within the past week. For a few > months before I owned the XJ, you would run the blower and could here a > bearing/grinding noise coming from the blower. Maybe this helped the > resistor pack to an early grave?? > > Regards, > Gary > > "Mike Romain" <romainm@sympatico.ca> wrote in message > news:3F6DB32B.7AC6CD24@sympatico.ca... > > I think if you run the heater on recirculating air too long, it can > > overheat the system, but you could have a good point about an old motor > > starting to draw too much. > > > > Our motor went that way and killed the switch. It melted it down. > > Resistor pack stayed ok. > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > 88 Cherokee 235 BFG AT's > > > > Dave wrote: > > > > > > I always wonder why the resistor pack blows that thermo fuse??? > > > I was told it is caused by a blower that demands a little too much > current. > > > :-( > > > > > > Keep your old pack and install a new fuse in it. I believe that Radio > Shack > > > may sell them cheaply. > > > later, > > > dave > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > news:Rbcbb.10121$KJ5.251@fe2.columbus.rr.com... > > > > Well, I found the problem. It was the resistor pack. Got one from > the > > > > dealer today for $17 and some change. Installed it and voila, I have > a > > > > multi-speed blower once again! Awesome! > > > > Thank you so much for your help with this! > > > > > > > > Regards, > > > > Gary B. > > > > > > > > > > > > " Stephen Cowell" <scowell@sbcglobal.net> wrote in message > > > > news:VM0bb.1320$Q63.249@newssvr23.news.prodigy.com ... > > > > > > > > > > "Gary B." <jeepnmon@cinci.rr.com> wrote in message > > > > > news:umZab.15408$uJ2.8084@fe3.columbus.rr.com... > > > > > > I would appreciate any help or advise that anyone could give me to > fix > > > > > this > > > > > > problem I'm having with my 89 Cherokee. My blower fan works on > High > > > > speed > > > > > > only and not at all on the lower speeds. Would this mean my > switch is > > > > > "bad" > > > > > > or the resistor needsreplacing? Is there any way to fix/clean the > > > > switch > > > > > > short of replacing it? > > > > > > > > > > Could be switch or resistor pack... you'll have to troubleshoot > > > > > it. Easiest would be to pull the resistor pack and examine it... > > > > > basically pieces of coiled nichrome wire. The wire should be > > > > > solid; you should get low ohms with an ohmmeter check. > > > > > > > > > > Some resistor packs have a temperature limiting fuse, > > > > > if the pack gets too hot, the fuse opens and voila, > > > > > you need a new pack. Bypassing the fuse to > > > > > repair the pack is not for the faint of heart. > > > > > __ > > > > > Steve > > > > > . > > > > > > > > > > > > > > > > > > |
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