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#1
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2002 Grand Cherokeewipers
During a recent ice storm my wipers were locked in the ice and could
not free themselves. After I freed them with the scraper they won't park properly, that is they don't home at the end of a cycle. I have been told that I need either a new motor or a control module. My background with GM cars tells me that I have a bad ground to the motor but that doesn't seem to apply here. Has anyone had this problem and if so what is the correct fix. Thanks in advance, Mike |
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#2
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2002 Grand Cherokeewipers
That is the biggest killer of the control modules and intermittent
modules. For some strange reason, the modules aren't fused and when the wiper motor sits under load drawing 20+ amps, it lets the smoke out of them. My CJ7's is like that and the $tealer want damn near $500.00 for a new intermittent module. Mine still park though. My module has smoked out diodes in it. A couple 50 cent parts.... The motor (mine is anyway) is like the GM one I believe with a unique ground for the brass ring to park the motor. You 'could' have burned a spot on the brass parking ring so the ground is open and they just stop when the switch is off. Some solder would fix that up.... I think opening up either the motor or the module is needed to find out which one when belly up unless there is some code they throw. (unlikely, but someone here might know) Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) wrote: > > During a recent ice storm my wipers were locked in the ice and could > not free themselves. > After I freed them with the scraper they won't park properly, that is > they don't home at the end of a cycle. I have been told that I need > either a new motor or a control module. My > background with GM cars tells me that I have a bad ground to the motor > but that doesn't seem to apply here. Has anyone had this problem and if > so what is the correct fix. > Thanks in advance, Mike |
#3
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2002 Grand Cherokeewipers
Mike, I just sent him the '02 WJ wiper electrical diagnosis info.
Hopefully he will let us know what he finds. "Mike Romain" > wrote in message ... > That is the biggest killer of the control modules and intermittent > modules. > > For some strange reason, the modules aren't fused and when the wiper > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > intermittent module. Mine still park though. My module has smoked out > diodes in it. A couple 50 cent parts.... > > The motor (mine is anyway) is like the GM one I believe with a unique > ground for the brass ring to park the motor. You 'could' have burned a > spot on the brass parking ring so the ground is open and they just stop > when the switch is off. Some solder would fix that up.... > > I think opening up either the motor or the module is needed to find out > which one when belly up unless there is some code they throw. (unlikely, > but someone here might know) > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's > Canadian Off Road Trips Photos: Non members can still view! > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > (More Off Road album links at bottom of the view page) > > wrote: >> >> During a recent ice storm my wipers were locked in the ice and could >> not free themselves. >> After I freed them with the scraper they won't park properly, that is >> they don't home at the end of a cycle. I have been told that I need >> either a new motor or a control module. My >> background with GM cars tells me that I have a bad ground to the motor >> but that doesn't seem to apply here. Has anyone had this problem and if >> so what is the correct fix. >> Thanks in advance, Mike |
#4
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2002 Grand Cherokeewipers
the wiper motor has a park switch in it and it's now damaged
billy ray wrote: > Mike, I just sent him the '02 WJ wiper electrical diagnosis info. > Hopefully he will let us know what he finds. > > "Mike Romain" > wrote in message > ... > > That is the biggest killer of the control modules and intermittent > > modules. > > > > For some strange reason, the modules aren't fused and when the wiper > > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > > intermittent module. Mine still park though. My module has smoked out > > diodes in it. A couple 50 cent parts.... > > > > The motor (mine is anyway) is like the GM one I believe with a unique > > ground for the brass ring to park the motor. You 'could' have burned a > > spot on the brass parking ring so the ground is open and they just stop > > when the switch is off. Some solder would fix that up.... > > > > I think opening up either the motor or the module is needed to find out > > which one when belly up unless there is some code they throw. (unlikely, > > but someone here might know) > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > 88 Cherokee 235 BFG AT's > > Canadian Off Road Trips Photos: Non members can still view! > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > (More Off Road album links at bottom of the view page) > > > > wrote: > >> > >> During a recent ice storm my wipers were locked in the ice and could > >> not free themselves. > >> After I freed them with the scraper they won't park properly, that is > >> they don't home at the end of a cycle. I have been told that I need > >> either a new motor or a control module. My > >> background with GM cars tells me that I have a bad ground to the motor > >> but that doesn't seem to apply here. Has anyone had this problem and if > >> so what is the correct fix. > >> Thanks in advance, Mike |
#5
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2002 Grand Cherokeewipers
Is it an electronic switch or the brass ring to ground type?
Mike philthy wrote: > > the wiper motor has a park switch in it and it's now damaged > > billy ray wrote: > > > Mike, I just sent him the '02 WJ wiper electrical diagnosis info. > > Hopefully he will let us know what he finds. > > > > "Mike Romain" > wrote in message > > ... > > > That is the biggest killer of the control modules and intermittent > > > modules. > > > > > > For some strange reason, the modules aren't fused and when the wiper > > > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > > > > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > > > intermittent module. Mine still park though. My module has smoked out > > > diodes in it. A couple 50 cent parts.... > > > > > > The motor (mine is anyway) is like the GM one I believe with a unique > > > ground for the brass ring to park the motor. You 'could' have burned a > > > spot on the brass parking ring so the ground is open and they just stop > > > when the switch is off. Some solder would fix that up.... > > > > > > I think opening up either the motor or the module is needed to find out > > > which one when belly up unless there is some code they throw. (unlikely, > > > but someone here might know) > > > > > > Mike > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > > 88 Cherokee 235 BFG AT's > > > Canadian Off Road Trips Photos: Non members can still view! > > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > > (More Off Road album links at bottom of the view page) > > > > > > wrote: > > >> > > >> During a recent ice storm my wipers were locked in the ice and could > > >> not free themselves. > > >> After I freed them with the scraper they won't park properly, that is > > >> they don't home at the end of a cycle. I have been told that I need > > >> either a new motor or a control module. My > > >> background with GM cars tells me that I have a bad ground to the motor > > >> but that doesn't seem to apply here. Has anyone had this problem and if > > >> so what is the correct fix. > > >> Thanks in advance, Mike |
#6
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2002 Grand Cherokeewipers
That is a cool sheet. The park is electronic so I would suspect that
let the smoke out. At least it is easy to test. Mike billy ray wrote: > > Mike, I just sent him the '02 WJ wiper electrical diagnosis info. > Hopefully he will let us know what he finds. > > "Mike Romain" > wrote in message > ... > > That is the biggest killer of the control modules and intermittent > > modules. > > > > For some strange reason, the modules aren't fused and when the wiper > > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > > intermittent module. Mine still park though. My module has smoked out > > diodes in it. A couple 50 cent parts.... > > > > The motor (mine is anyway) is like the GM one I believe with a unique > > ground for the brass ring to park the motor. You 'could' have burned a > > spot on the brass parking ring so the ground is open and they just stop > > when the switch is off. Some solder would fix that up.... > > > > I think opening up either the motor or the module is needed to find out > > which one when belly up unless there is some code they throw. (unlikely, > > but someone here might know) > > > > Mike > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > 88 Cherokee 235 BFG AT's > > Canadian Off Road Trips Photos: Non members can still view! > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > (More Off Road album links at bottom of the view page) > > > > wrote: > >> > >> During a recent ice storm my wipers were locked in the ice and could > >> not free themselves. > >> After I freed them with the scraper they won't park properly, that is > >> they don't home at the end of a cycle. I have been told that I need > >> either a new motor or a control module. My > >> background with GM cars tells me that I have a bad ground to the motor > >> but that doesn't seem to apply here. Has anyone had this problem and if > >> so what is the correct fix. > >> Thanks in advance, Mike |
#7
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2002 Grand Cherokeewipers
Imho, it's a mechanical switch, of the type that only parts rebuilders seem
able to find. :^( I have not had the pleasure of owning this model, but on other vehicles that I have owned, the fix is a rebuilt wiper motor. Up here in snow country people flip the blades into the wash position before leaving a vehicle for the night. If your vehicle manufacturer was short sighted enough not to include this feature, then three or four replacement wiper motors will convince almost anybody, even women, to remember to let the wipers park before shutting off the vehicle. Earle "Mike Romain" > wrote in message ... > Is it an electronic switch or the brass ring to ground type? > > Mike > > philthy wrote: > > > > the wiper motor has a park switch in it and it's now damaged > > > > billy ray wrote: > > > > > Mike, I just sent him the '02 WJ wiper electrical diagnosis info. > > > Hopefully he will let us know what he finds. > > > > > > "Mike Romain" > wrote in message > > > ... > > > > That is the biggest killer of the control modules and intermittent > > > > modules. > > > > > > > > For some strange reason, the modules aren't fused and when the wiper > > > > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > > > > > > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > > > > intermittent module. Mine still park though. My module has smoked out > > > > diodes in it. A couple 50 cent parts.... > > > > > > > > The motor (mine is anyway) is like the GM one I believe with a unique > > > > ground for the brass ring to park the motor. You 'could' have burned a > > > > spot on the brass parking ring so the ground is open and they just stop > > > > when the switch is off. Some solder would fix that up.... > > > > > > > > I think opening up either the motor or the module is needed to find out > > > > which one when belly up unless there is some code they throw. (unlikely, > > > > but someone here might know) > > > > > > > > Mike > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > > > 88 Cherokee 235 BFG AT's > > > > Canadian Off Road Trips Photos: Non members can still view! > > > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > > > (More Off Road album links at bottom of the view page) > > > > > > > > wrote: > > > >> > > > >> During a recent ice storm my wipers were locked in the ice and could > > > >> not free themselves. > > > >> After I freed them with the scraper they won't park properly, that is > > > >> they don't home at the end of a cycle. I have been told that I need > > > >> either a new motor or a control module. My > > > >> background with GM cars tells me that I have a bad ground to the motor > > > >> but that doesn't seem to apply here. Has anyone had this problem and if > > > >> so what is the correct fix. > > > >> Thanks in advance, Mike |
#8
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2002 Grand Cherokeewipers
Ditto.
God Bless America, Bill O|||||||O http://www.billhughes.com/ philthy wrote: > > the wiper motor has a park switch in it and it's now damaged |
#9
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2002 Grand Cherokeewipers
contact type
Mike Romain wrote: > Is it an electronic switch or the brass ring to ground type? > > Mike > > philthy wrote: > > > > the wiper motor has a park switch in it and it's now damaged > > > > billy ray wrote: > > > > > Mike, I just sent him the '02 WJ wiper electrical diagnosis info. > > > Hopefully he will let us know what he finds. > > > > > > "Mike Romain" > wrote in message > > > ... > > > > That is the biggest killer of the control modules and intermittent > > > > modules. > > > > > > > > For some strange reason, the modules aren't fused and when the wiper > > > > motor sits under load drawing 20+ amps, it lets the smoke out of them. > > > > > > > > My CJ7's is like that and the $tealer want damn near $500.00 for a new > > > > intermittent module. Mine still park though. My module has smoked out > > > > diodes in it. A couple 50 cent parts.... > > > > > > > > The motor (mine is anyway) is like the GM one I believe with a unique > > > > ground for the brass ring to park the motor. You 'could' have burned a > > > > spot on the brass parking ring so the ground is open and they just stop > > > > when the switch is off. Some solder would fix that up.... > > > > > > > > I think opening up either the motor or the module is needed to find out > > > > which one when belly up unless there is some code they throw. (unlikely, > > > > but someone here might know) > > > > > > > > Mike > > > > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > > > > 88 Cherokee 235 BFG AT's > > > > Canadian Off Road Trips Photos: Non members can still view! > > > > Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 > > > > (More Off Road album links at bottom of the view page) > > > > > > > > wrote: > > > >> > > > >> During a recent ice storm my wipers were locked in the ice and could > > > >> not free themselves. > > > >> After I freed them with the scraper they won't park properly, that is > > > >> they don't home at the end of a cycle. I have been told that I need > > > >> either a new motor or a control module. My > > > >> background with GM cars tells me that I have a bad ground to the motor > > > >> but that doesn't seem to apply here. Has anyone had this problem and if > > > >> so what is the correct fix. > > > >> Thanks in advance, Mike |
#10
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2002 Grand Cherokeewipers
Thanks for all the tips guys, I'm sorting through the manual that Billy
Ray sent butI may just order a motor from rockauto.com and hopre that will fix it. I may also pull the motor and have our electrician at work test it. |
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