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1986 sedan deville, fans not on when there suppose to be


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08-04-02, 12:10 AM   #1  
STUDES
1986 sedan deville, fans not on when there suppose to be

I HAVE A 1986 SEDAN DEVILLE, MY COOLANT TEMP FAN LITE COMES ON WHEN I USE THE A\C, WHEN I TURN THE AIR OFF, THE LITE GOES OFF. THE FAN SEEMS TO BE RUNNING UNTILL I TURN THE AIR ON. IS THE A FAN RELAY, OR SENDING UNIT, OR BOTH?
IT HAS A 4.1 LTR V8, FWD.
TOM

 
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08-04-02, 06:44 AM   #2  
TECHMAN
You say the fan seem to be working ? Do you have 1 or 2 fans. take timing tolet warm up a see if fan are fans come on. with to fan there will be a swicth in high side a/c line that will turn a/c fan on when pressure get high enouht.. Check for 3 wire swith in high side line if you are running 2 fans._____good luck--Dave---

 
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