Overheating JD 950

[PastureKing]

My JD 950 is overheating, again. It did this early last spring and I replaced the thermostat and water pump. It seemed to correct the problme. However, I am experiencing the same problem this year.

The water pump connects to a housing which has an electrical connection. The JD Parts catalog identifies this as a "switch" rather than a sensor. The manual states that overheating, among a dozen or so possible causes, could be a "defective temperature lamp or sender." My logic tells me thats just a false positive warning light and could not be causing the engine to overheat.

Steam perculates through the overflow bottle - that's the only signal that it is overheated.


Anyone with any thoughts before I go through replacing the thermostat and water pump, again??

Thanks, in advance, for any suggestions.

 

[knotweed]

Check the grill of the radiator and see if it's clean. Next check the water inside the radiator and see if it is also clean. If it's rusty or dirty, I found out here on this site to flush and fill with clean water. Add a 1/2 cup Cascade dish washing powder (dissolve in 1/2 cup water) and operate for a while (day) and it will clean the interior of the radiator. If it still overheats, get one of those heat sensor guns and take readings on different sections of the radiator and see if there are cold spots. If so, you may need a radiator core job. If the cascade solves the problem, flush and fill with 25% antifreeze mixture.

 

[PastureKing]

Sounds like my day tomorrow is planned. I'll get the Cascade.
Thanks.

 

[Blaneypark]

Cascade is some good stuff. I use it to clean filters for hot tubs. Again 1/2 cup 1n a dishwasher run the cycle and the hot tub filter is clean as a whistle.