Re: Electric Fan Motor
40? I'm thinking you're talking about the 40 amp maxi fuses in the power
distribution center. If not, what is this 40 you refer to? In message <B8Hsc.26419$fF3.679331@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" wrote: >I switched the relay for the electric fan (40) with the ignition relay (also >40). > > >"bllsht" <nospam@invaliddot.net> wrote in message >news:29q5b09l80o8uit5gr9et3hr5fudnofp92@4ax.com.. . >> In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, >"Tom R" >> wrote: >> >> >I already tested the fan & relay, they both are OK. I switched out the >> >Coolant Temperature Sensor today and still no luck. >> >> The fan staying on before total failure sure sounds like a relay problem >to me. >> How did you test it? >> >> If the old fan motor was so worn that it was running slow, it probably >smoked >> the relay. >> >> > >> >Now I am wondering now if it could be the thermostat. I know the CTS is >in >> >the same housing as the thermostat, but is it upstream of the thermostat? >> > >> >Tom R. >> > >> >"Snow" <snowball_2004@msn.com> wrote in message >> >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. >> >> Well assuming its the same layout as my 4.0 , the electric fan gets >its >> >> signal from the temp sensor on the thermostat housing, the gauge gets >its >> >> signal from a sending unit on the after left hand side of the engine. >the >> >> gauge and fan don't share the sensor/sending units. Sounds to me >like >> >> either your temp sensor (on the t-stat housing) or the relay for it has >> >bit >> >> the dust. Eliminate the fan by connecting it directly to the battery, >if >> >it >> >> spins then you know its good. >> >> >> >> Snow... "Don Cherry for Prime Minister" >> >> >> >> >> >> "Tom R" <tomr@noreply.com> wrote in message >> >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... >> >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going >through >> >a >> >> > slow death (decreasing RPM's) so I recently replaced. >> >> > >> >> > The new fan worked fine for several days then it ran constantly after >> >the >> >> > engine was shut off. For several days I just unplugged the fan so it >> >would >> >> > not drain my battery. Now when I plug it back in, it does not work at >> >all, >> >> > even when the temperature guage reads 210+. >> >> > >> >> > The temperature guage, thermostat and relay appear to working >correctly. >> >> > >> >> > Does the electric fan take its signal from the temperature sensor at >the >> >> > thermostat or is there another sensor that could be causing the >problem? >> >> > >> >> > Any suggestions? >> >> > >> >> > - Tom R >> >> > >> >> > >> >> > >> >> >> >> >> > >> > >> > |
Re: Electric Fan Motor
40? I'm thinking you're talking about the 40 amp maxi fuses in the power
distribution center. If not, what is this 40 you refer to? In message <B8Hsc.26419$fF3.679331@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" wrote: >I switched the relay for the electric fan (40) with the ignition relay (also >40). > > >"bllsht" <nospam@invaliddot.net> wrote in message >news:29q5b09l80o8uit5gr9et3hr5fudnofp92@4ax.com.. . >> In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, >"Tom R" >> wrote: >> >> >I already tested the fan & relay, they both are OK. I switched out the >> >Coolant Temperature Sensor today and still no luck. >> >> The fan staying on before total failure sure sounds like a relay problem >to me. >> How did you test it? >> >> If the old fan motor was so worn that it was running slow, it probably >smoked >> the relay. >> >> > >> >Now I am wondering now if it could be the thermostat. I know the CTS is >in >> >the same housing as the thermostat, but is it upstream of the thermostat? >> > >> >Tom R. >> > >> >"Snow" <snowball_2004@msn.com> wrote in message >> >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. >> >> Well assuming its the same layout as my 4.0 , the electric fan gets >its >> >> signal from the temp sensor on the thermostat housing, the gauge gets >its >> >> signal from a sending unit on the after left hand side of the engine. >the >> >> gauge and fan don't share the sensor/sending units. Sounds to me >like >> >> either your temp sensor (on the t-stat housing) or the relay for it has >> >bit >> >> the dust. Eliminate the fan by connecting it directly to the battery, >if >> >it >> >> spins then you know its good. >> >> >> >> Snow... "Don Cherry for Prime Minister" >> >> >> >> >> >> "Tom R" <tomr@noreply.com> wrote in message >> >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... >> >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going >through >> >a >> >> > slow death (decreasing RPM's) so I recently replaced. >> >> > >> >> > The new fan worked fine for several days then it ran constantly after >> >the >> >> > engine was shut off. For several days I just unplugged the fan so it >> >would >> >> > not drain my battery. Now when I plug it back in, it does not work at >> >all, >> >> > even when the temperature guage reads 210+. >> >> > >> >> > The temperature guage, thermostat and relay appear to working >correctly. >> >> > >> >> > Does the electric fan take its signal from the temperature sensor at >the >> >> > thermostat or is there another sensor that could be causing the >problem? >> >> > >> >> > Any suggestions? >> >> > >> >> > - Tom R >> >> > >> >> > >> >> > >> >> >> >> >> > >> > >> > |
Re: Electric Fan Motor
40? I'm thinking you're talking about the 40 amp maxi fuses in the power
distribution center. If not, what is this 40 you refer to? In message <B8Hsc.26419$fF3.679331@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" wrote: >I switched the relay for the electric fan (40) with the ignition relay (also >40). > > >"bllsht" <nospam@invaliddot.net> wrote in message >news:29q5b09l80o8uit5gr9et3hr5fudnofp92@4ax.com.. . >> In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, >"Tom R" >> wrote: >> >> >I already tested the fan & relay, they both are OK. I switched out the >> >Coolant Temperature Sensor today and still no luck. >> >> The fan staying on before total failure sure sounds like a relay problem >to me. >> How did you test it? >> >> If the old fan motor was so worn that it was running slow, it probably >smoked >> the relay. >> >> > >> >Now I am wondering now if it could be the thermostat. I know the CTS is >in >> >the same housing as the thermostat, but is it upstream of the thermostat? >> > >> >Tom R. >> > >> >"Snow" <snowball_2004@msn.com> wrote in message >> >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. >> >> Well assuming its the same layout as my 4.0 , the electric fan gets >its >> >> signal from the temp sensor on the thermostat housing, the gauge gets >its >> >> signal from a sending unit on the after left hand side of the engine. >the >> >> gauge and fan don't share the sensor/sending units. Sounds to me >like >> >> either your temp sensor (on the t-stat housing) or the relay for it has >> >bit >> >> the dust. Eliminate the fan by connecting it directly to the battery, >if >> >it >> >> spins then you know its good. >> >> >> >> Snow... "Don Cherry for Prime Minister" >> >> >> >> >> >> "Tom R" <tomr@noreply.com> wrote in message >> >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... >> >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going >through >> >a >> >> > slow death (decreasing RPM's) so I recently replaced. >> >> > >> >> > The new fan worked fine for several days then it ran constantly after >> >the >> >> > engine was shut off. For several days I just unplugged the fan so it >> >would >> >> > not drain my battery. Now when I plug it back in, it does not work at >> >all, >> >> > even when the temperature guage reads 210+. >> >> > >> >> > The temperature guage, thermostat and relay appear to working >correctly. >> >> > >> >> > Does the electric fan take its signal from the temperature sensor at >the >> >> > thermostat or is there another sensor that could be causing the >problem? >> >> > >> >> > Any suggestions? >> >> > >> >> > - Tom R >> >> > >> >> > >> >> > >> >> >> >> >> > >> > >> > |
Re: Electric Fan Motor
pull fault codes
Tom R wrote: > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through a > slow death (decreasing RPM's) so I recently replaced. > > The new fan worked fine for several days then it ran constantly after the > engine was shut off. For several days I just unplugged the fan so it would > not drain my battery. Now when I plug it back in, it does not work at all, > even when the temperature guage reads 210+. > > The temperature guage, thermostat and relay appear to working correctly. > > Does the electric fan take its signal from the temperature sensor at the > thermostat or is there another sensor that could be causing the problem? > > Any suggestions? > > - Tom R |
Re: Electric Fan Motor
pull fault codes
Tom R wrote: > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through a > slow death (decreasing RPM's) so I recently replaced. > > The new fan worked fine for several days then it ran constantly after the > engine was shut off. For several days I just unplugged the fan so it would > not drain my battery. Now when I plug it back in, it does not work at all, > even when the temperature guage reads 210+. > > The temperature guage, thermostat and relay appear to working correctly. > > Does the electric fan take its signal from the temperature sensor at the > thermostat or is there another sensor that could be causing the problem? > > Any suggestions? > > - Tom R |
Re: Electric Fan Motor
pull fault codes
Tom R wrote: > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through a > slow death (decreasing RPM's) so I recently replaced. > > The new fan worked fine for several days then it ran constantly after the > engine was shut off. For several days I just unplugged the fan so it would > not drain my battery. Now when I plug it back in, it does not work at all, > even when the temperature guage reads 210+. > > The temperature guage, thermostat and relay appear to working correctly. > > Does the electric fan take its signal from the temperature sensor at the > thermostat or is there another sensor that could be causing the problem? > > Any suggestions? > > - Tom R |
Re: Electric Fan Motor
pull fault codes
Tom R wrote: > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through a > slow death (decreasing RPM's) so I recently replaced. > > The new fan worked fine for several days then it ran constantly after the > engine was shut off. For several days I just unplugged the fan so it would > not drain my battery. Now when I plug it back in, it does not work at all, > even when the temperature guage reads 210+. > > The temperature guage, thermostat and relay appear to working correctly. > > Does the electric fan take its signal from the temperature sensor at the > thermostat or is there another sensor that could be causing the problem? > > Any suggestions? > > - Tom R |
Re: Electric Fan Motor
the fan control relay is behingd the right headlite assembly, is that the one you
tested???? bllsht wrote: > In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" > wrote: > > >I already tested the fan & relay, they both are OK. I switched out the > >Coolant Temperature Sensor today and still no luck. > > The fan staying on before total failure sure sounds like a relay problem to me. > How did you test it? > > If the old fan motor was so worn that it was running slow, it probably smoked > the relay. > > > > >Now I am wondering now if it could be the thermostat. I know the CTS is in > >the same housing as the thermostat, but is it upstream of the thermostat? > > > >Tom R. > > > >"Snow" <snowball_2004@msn.com> wrote in message > >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. > >> Well assuming its the same layout as my 4.0 , the electric fan gets its > >> signal from the temp sensor on the thermostat housing, the gauge gets its > >> signal from a sending unit on the after left hand side of the engine. the > >> gauge and fan don't share the sensor/sending units. Sounds to me like > >> either your temp sensor (on the t-stat housing) or the relay for it has > >bit > >> the dust. Eliminate the fan by connecting it directly to the battery, if > >it > >> spins then you know its good. > >> > >> Snow... "Don Cherry for Prime Minister" > >> > >> > >> "Tom R" <tomr@noreply.com> wrote in message > >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... > >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through > >a > >> > slow death (decreasing RPM's) so I recently replaced. > >> > > >> > The new fan worked fine for several days then it ran constantly after > >the > >> > engine was shut off. For several days I just unplugged the fan so it > >would > >> > not drain my battery. Now when I plug it back in, it does not work at > >all, > >> > even when the temperature guage reads 210+. > >> > > >> > The temperature guage, thermostat and relay appear to working correctly. > >> > > >> > Does the electric fan take its signal from the temperature sensor at the > >> > thermostat or is there another sensor that could be causing the problem? > >> > > >> > Any suggestions? > >> > > >> > - Tom R > >> > > >> > > >> > > >> > >> > > > > |
Re: Electric Fan Motor
the fan control relay is behingd the right headlite assembly, is that the one you
tested???? bllsht wrote: > In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" > wrote: > > >I already tested the fan & relay, they both are OK. I switched out the > >Coolant Temperature Sensor today and still no luck. > > The fan staying on before total failure sure sounds like a relay problem to me. > How did you test it? > > If the old fan motor was so worn that it was running slow, it probably smoked > the relay. > > > > >Now I am wondering now if it could be the thermostat. I know the CTS is in > >the same housing as the thermostat, but is it upstream of the thermostat? > > > >Tom R. > > > >"Snow" <snowball_2004@msn.com> wrote in message > >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. > >> Well assuming its the same layout as my 4.0 , the electric fan gets its > >> signal from the temp sensor on the thermostat housing, the gauge gets its > >> signal from a sending unit on the after left hand side of the engine. the > >> gauge and fan don't share the sensor/sending units. Sounds to me like > >> either your temp sensor (on the t-stat housing) or the relay for it has > >bit > >> the dust. Eliminate the fan by connecting it directly to the battery, if > >it > >> spins then you know its good. > >> > >> Snow... "Don Cherry for Prime Minister" > >> > >> > >> "Tom R" <tomr@noreply.com> wrote in message > >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... > >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through > >a > >> > slow death (decreasing RPM's) so I recently replaced. > >> > > >> > The new fan worked fine for several days then it ran constantly after > >the > >> > engine was shut off. For several days I just unplugged the fan so it > >would > >> > not drain my battery. Now when I plug it back in, it does not work at > >all, > >> > even when the temperature guage reads 210+. > >> > > >> > The temperature guage, thermostat and relay appear to working correctly. > >> > > >> > Does the electric fan take its signal from the temperature sensor at the > >> > thermostat or is there another sensor that could be causing the problem? > >> > > >> > Any suggestions? > >> > > >> > - Tom R > >> > > >> > > >> > > >> > >> > > > > |
Re: Electric Fan Motor
the fan control relay is behingd the right headlite assembly, is that the one you
tested???? bllsht wrote: > In message <Gctsc.24027$fF3.612160@bgtnsc05-news.ops.worldnet.att.net>, "Tom R" > wrote: > > >I already tested the fan & relay, they both are OK. I switched out the > >Coolant Temperature Sensor today and still no luck. > > The fan staying on before total failure sure sounds like a relay problem to me. > How did you test it? > > If the old fan motor was so worn that it was running slow, it probably smoked > the relay. > > > > >Now I am wondering now if it could be the thermostat. I know the CTS is in > >the same housing as the thermostat, but is it upstream of the thermostat? > > > >Tom R. > > > >"Snow" <snowball_2004@msn.com> wrote in message > >news:848sc.9996$sr3.117197@news20.bellglobal.com. .. > >> Well assuming its the same layout as my 4.0 , the electric fan gets its > >> signal from the temp sensor on the thermostat housing, the gauge gets its > >> signal from a sending unit on the after left hand side of the engine. the > >> gauge and fan don't share the sensor/sending units. Sounds to me like > >> either your temp sensor (on the t-stat housing) or the relay for it has > >bit > >> the dust. Eliminate the fan by connecting it directly to the battery, if > >it > >> spins then you know its good. > >> > >> Snow... "Don Cherry for Prime Minister" > >> > >> > >> "Tom R" <tomr@noreply.com> wrote in message > >> news:ec6sc.19789$fF3.505534@bgtnsc05-news.ops.worldnet.att.net... > >> > 1999 Grand Cherokee w/ 4.0L. The electric cooling fan was going through > >a > >> > slow death (decreasing RPM's) so I recently replaced. > >> > > >> > The new fan worked fine for several days then it ran constantly after > >the > >> > engine was shut off. For several days I just unplugged the fan so it > >would > >> > not drain my battery. Now when I plug it back in, it does not work at > >all, > >> > even when the temperature guage reads 210+. > >> > > >> > The temperature guage, thermostat and relay appear to working correctly. > >> > > >> > Does the electric fan take its signal from the temperature sensor at the > >> > thermostat or is there another sensor that could be causing the problem? > >> > > >> > Any suggestions? > >> > > >> > - Tom R > >> > > >> > > >> > > >> > >> > > > > |
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