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I noticied today that my oil temp. sender was broken and the wire had fallen off of the sender. I'm in the process of rebuilding this 2000 350 rancher 4X4 es and was wondering if I had to have the oil temp. sender to run the engine when I finish it. My understanding is that it just tells the fan when to come on, am I right? I read a thread were some fans rarely come on at all. The male spade on the sender just fell off. I wonder if I can just stick the wire in the sender and soider it in and that work, anybody done this before?
 

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Yeah, the oil temp sensor tells the fan when to turn on and it also makes the oil temp light turn on when it needs to. It's important that the fan runs on those Ranchers when it needs to or it will got hot and melt the piston and rings. I have one in my garage right now and that's what happened to it.

You might be able to solder the wire to it, but it might get the inside too hot and the sensor might not work properly anymore. I think I would just buy a new one.

What happened to the Rancher that you are rebuilding it? Did the piston and rings melt? If so, then the wire breaking off the sensor is probably what caused it to do that.
 

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Yeah, the oil temp sensor tells the fan when to turn on and it also makes the oil temp light turn on when it needs to. It's important that the fan runs on those Ranchers when it needs to or it will got hot and melt the piston and rings. I have one in my garage right now and that's what happened to it.

You might be able to solder the wire to it, but it might get the inside too hot and the sensor might not work properly anymore. I think I would just buy a new one.

What happened to the Rancher that you are rebuilding it? Did the piston and rings melt? If so, then the wire breaking off the sensor is probably what caused it to do that.
I traded a gun for it knowing it didnt have any compression. It was treated very rough with no care. I found it had a .75 piston in it and the oil ring was broke several places. Swingarm bearings are bad also.
 

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I would also buy a new one. If you used a low temp. Solder it wouldn't damage the sensor but the engine would probaly get hot enough to melt it and then it would fall off again. A high temp. Solder will damage the sensor.
 

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Just rig a switch to the fan so you can manually turn it off and on...
 

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I would also buy a new one. If you used a low temp. Solder it wouldn't damage the sensor but the engine would probaly get hot enough to melt it and then it would fall off again. A high temp. Solder will damage the sensor.
I was thinking and you can go to Radio Shack and buy a clip on heat sink that would let you solder it back on without burning the sensor out.
 

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Can't you just ground the wire and then the fan would run all the time, don't know if its a normally open or closed switch.
 

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Can't you just ground the wire and then the fan would run all the time, don't know if its a normally open or closed switch.
I believe you are correct 69. I think when it gets a certain temperature it just grounds to the block to complete the circuit. He could tell for sure when he gets it running by just tipping the end of the wire to the block and the fan should kick on.
 

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Can't you just ground the wire and then the fan would run all the time, don't know if its a normally open or closed switch.
I believe you are correct 69. I think when it gets a certain temperature it just grounds to the block to complete the circuit. He could tell for sure when he gets it running by just tipping the end of the wire to the block and the fan should kick on.
I think thats what the manual says to do to check the fan operation, just ground that wire. So I guess it wont hurt anything to just run it for a bit when I get it back together and replace it soon after?
 

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Can't you just ground the wire and then the fan would run all the time, don't know if its a normally open or closed switch.
I believe you are correct 69. I think when it gets a certain temperature it just grounds to the block to complete the circuit. He could tell for sure when he gets it running by just tipping the end of the wire to the block and the fan should kick on.
I think thats what the manual says to do to check the fan operation, just ground that wire. So I guess it wont hurt anything to just run it for a bit when I get it back together and replace it soon after?
Yeah, it shouldn't hurt it a bit to do that.
 

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On my 450ER thata what i did when the sensor broke on the thermostat housing i just grounded it to the bolt that holds the coil to the frame when the motor is running the fan is on.
 

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Hay Bass11.11 those are some great lookin Bass, i love to fish also i live about 6 hrs north of you near Memphis,Tenn actually Southaven, Ms
 

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Hay Bass11.11 those are some great lookin Bass, i love to fish also i live about 6 hrs north of you near Memphis,Tenn actually Southaven, Ms
Since your that close you need to get together with Tom Helmut and me and go to LBL to ride sometime!
 

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I would love to have been to LBL but it was back in the late 80's we need to plan a trip!
 

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yep we need to try to get together on a time when everyone can go.
 

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Hay Bass11.11 those are some great lookin Bass, i love to fish also i live about 6 hrs north of you near Memphis,Tenn actually Southaven, Ms
Thanks, I'm headed to Fork Monday on some vacation time to fish till my parts for the rancher.
Lake fork in Texas? my cousins went there a few years ago and caught some good ones.
 

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I noticied today that my oil temp. sender was broken and the wire had fallen off of the sender. I'm in the process of rebuilding this 2000 350 rancher 4X4 es and was wondering if I had to have the oil temp. sender to run the engine when I finish it. My understanding is that it just tells the fan when to come on, am I right? I read a thread were some fans rarely come on at all. The male spade on the sender just fell off. I wonder if I can just stick the wire in the sender and soider it in and that work, anybody done this before?
Wanting to check if mine is working I have the 2006 bike with manual shift I have been using the bike a bit runs great just on shorter journeys around the farm. I took it out the other day and rode the bike hard as I was wondering if the fan ever kicked in but it didn't so. I am wondering if it's working anyone got a diagram or pics with the location of the oil temp sensor. I can get a diagram for just about every other bike on Google except this one. Came across this post fingers crossed
 

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Wanting to check if mine is working I have the 2006 bike with manual shift I have been using the bike a bit runs great just on shorter journeys around the farm. I took it out the other day and rode the bike hard as I was wondering if the fan ever kicked in but it didn't so. I am wondering if it's working anyone got a diagram or pics with the location of the oil temp sensor. I can get a diagram for just about every other bike on Google except this one. Came across this post fingers crossed
left side, where the foot shift lever is located, behind the lever, stuck in the corner of engine case, one wire leads to it, unplug it, turn key on, touch it to the engine case, the fan should come on if its good ?, most times this tells me the oil temp sensor is bad if your getting the engine very hot ?, and the fan don't kick on.
 
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