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Discussion Starter · #1 ·
I just bought this 2000 6x4 Gator. It hasn't been used much lately, so I'm dealing with some issues. The current issue I'm dealing with is the cooling fan will not come on. I used my tester and verified power to the fan. I used a jumper to bypass the fan control switch on the radiator and the fan came on. I'm assuming that means my control switch is bad since the water in the radiator was pretty hot. A couple of questions:

1) Where can I buy a new control switch?

2) I know the power to the fan is on all the time. Would I do any harm by bypassing the control switch and changing the circuit to switched? The fan would run whenever the key is on.

Thanks

Ricky
 

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1. Any John Deere dealer should be able to provide. Check with some of the online supporters as they typically have competitive prices.

2. Running a fan full time. Suggest you evaluate alternator output at all rpms and electrical load. I'm concern the alternator can not support the fan running 100%.

Best solution would be to properly troubleshoot the current problem and fix. "Seems hot" is not adequate troubleshooting. Do you know what temperature the sensor should turn on? If not, I suggest you get the workshop manual so you have a clear understanding how it works and what the electrical circuit looks like.
 

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Do it right and confirm your fan switch is or is not working properly. Pull it out and hook the leads up to an ohmmeter, put it in a pot of water, heat the water and at 190* you should see ~0 ohms. If it opens at 190* you're good to go. If it doesn't just about any radiator mount sensor switches will work for you. ebay is your friend.
 

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Probably not much use as an answer, but had a similar problem on my HPX diesel. After the initial sticker shock for an OE replacement, I decided to check around, assuming JD didn't have a new switch designed just for them. Turns out my switch was for a motorcycle (I believe a Suzuki). At $9.00 delivered, it was easier to replace the switch than test the old one. The new switch fixed the problem.
 

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Does the OP want to comment on how they resolved their issue?
 

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It seems that way.

It would be of tremendous value to the forum if the original posters made the effort to close the post by stating the details of the outcome.
 
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I just bought an older 6x4 Kawasaki liquid cooled gas Gator. I also experienced the overheating problem after opening up the cooling system for a rebuild and this is what I did to solve the overheat condition. The cooling system is laid out with the radiator inlet port below the water pump on the motor. This leaves a large air bubble in the hose between the water pump and the bottom of the radiator. I found by jacking the front of the Gator so the radiator is higher than the motor and filling the rad with the bleeder screw open until coolant flows out. Tighten the bleeder screw and finish filling the radiator. The rest of the air is removed while filling. PUT THE RAD CAP ON AND DON"T REMOVE. Start the machine and warm it up and everything should be back to normal.
 

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Bingo! I'd guess 90% of the overheating issues on 6x4's simply has to do with air in the system and can be cured with proper "burping". Thanks for the post and let's hope the OP will at least return for the help he's been offered.
 

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Discussion Starter · #10 ·
I apologize to the group until I got a notification that someone responded to the thread. I didn't realize that I hadn't replied to the forum. I ended up buying a new thermostat for the fan and I haven't had any more issues with it. While I was in there I cleaned all of the areas to make sure there was good airflow. Thank you for your help and I'm sorry about the late reply.
 
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