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Discussion Starter #1
I have a 1995 Caprice with the 4.3 L99 V8. I seem to have a problem with the electric fans. Whenever they do come on, the Check Engine Light comes on as well. But, recently I had the car start to overheat, and the E-Fans didn't come on. What could be wrong? Any suggestions to fix the problem.
 

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Sounds like the sending unit in the water pump is bad. Replace it. The gauge on the dash uses the one on the passengers side head. The PCM/fans are controlled by the one in the water pump. If it goes into limp mode, and fails to get a reading from that sensor, it will kick the fans on, and the CEL.
 

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Discussion Starter #3
Sounds like the sending unit in the water pump is bad. Replace it. The gauge on the dash uses the one on the passengers side head. The PCM/fans are controlled by the one in the water pump. If it goes into limp mode, and fails to get a reading from that sensor, it will kick the fans on, and the CEL.
Thank you so much! Replacing that sensor did the trick! Much easier than having a mechanic charge 100 dollars/hour to diagnose and fix the problem.
 
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