Fan kicks in at proper temp but won't kick off.

[Sharke3]

New at this but I have an issue with the fan kicking in at temperatures but stays on. I have replaced the Thermostat, Temps switch sensor in the water crossover and the TDM. Is there anyway to check the selanoid valve before I spend 200 bucks on a new one? I have tried unplugging it and it shuts off when I plug it back in at cooler Temps. Kinda racking my brain...

 

[Action]

Before replacing all those parts, did you look at the temp gauge to see if the temp dropped after the fan came on?

 

[Sharke3]

It came does a little bit, but not as much as it should have.

 

[Action]

Then that is why the fan was still running. The motor is not cooling down like it should. An easy thing to check is between the radiator and oil/trans cooler on top of it. Lots of debris and dirt get stuck in there slowing airflow.

 

[goldneagle]

When was the last time you flushed out the cooling system? Also consider adding a coolant bypass filter to the system once you flush it out. I have pictures of the setup in my M923 Mod thread.

 

[Sharke3]

All good in between the radiator and trans-cooler. Nothing at all between them. When I got it is drained the system and the glycol was clean green tested good. I never really flushed it just put new coolant back in 50/50 mix.
While the unit was cool I unplugged the selanoid and plugged it back in. Turning the fan on then off agsin.
When I got the unit Ito was blowing power steering hoses. And after tracking it down sometime somewhere reversed two lines on the selinoid valve so it was dead heading at the valve. Could that have something to do with this problem?

 

[Action]

It sounds like it works as it is supposed to, but something is keeping the motor hot, which is keeping the fan on.

 

[1 Patriot-of-many]

Stuck thermostat?

 

[Sharke3]

The Thermostat is new but I suppose it could be bad.

 

[porkysplace]

The Thermostat is new but I suppose it could be bad.

Did you ever get it fixed ?