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Radiator Fan Stays On!

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SonySlave

15+ Year Contributor
967
75
Jun 24, 2004
Pasadena, Maryland
So the connection where the upper radiator hose connects to the radiator crumbled on me putting a new hose on... I got a new OEM replacement radiator and the install went smooth for the most part. I screwed in the temp sensor on the bottom of the new radiator and plugged all the electrical stuff back in and threw some water wetter and water/coolant. Turn my car on and the passenger side fan turns on and will not turn off. The A/C fan still functions correctly, but the other will not turn off. I'm not getting any overheating problems or anything...

Any reason why this may be? I unplugged the temp sensor at the bottom of the radiator and it stopped the fan, plugged it back in and the fan started back up... Any ideas?

Oh yeah and in the process of all of this I busted a nipple off my boost control solenoid and now I can boost to the moon and back if I get on it... I'll have to be careful for a bit...
 
Ok so I did some further searching and actually found a few articles about this problem and I am about 99% sure that the problem is the sensor that is connected to the bottom of the radiator. I have been searching and cannot find a part number for this sensor! Can anyone find me that part number? Thanks!
 
I tried the local parts stores and none of them can find it... So I'm wondering if anyone can figure it out so I can go to Mitsu...
 
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