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How to test radiator fan

Discussion in 'Tech Archive (No Posting)' started by takeachance, Apr 22, 2009.



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  1. takeachance

    takeachance New Member Registered VIP 5+ Year Member

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    I changed my coolant today and let it idle for a while and filled it up when it needed it but i never saw the fan turn on. The top hose was hot and could barely touch it and the bottom hose was also hot. I couldnt find any bleeder screw near the thermostat. It never got above what it normally does on the temp gauge though so i dont tihnk it overheated.
     
  2. 2slo4u

    2slo4u wait4me Registered VIP Registered OG 5+ Year Member 10+ Year Member

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  3. sf22189

    sf22189 names Brenton Registered VIP 5+ Year Member

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    cap on to the "first stop" That way you don't have radiator fluid boiling over all over the place
     
  4. takeachance

    takeachance New Member Registered VIP 5+ Year Member

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    i tested the fan at the ECT plug on the thermostat housing and it came on so the fan works....maybe its just not gettting hot enough??? or the temp plug might be bad
     
  5. knightxrider1

    knightxrider1 New Member Registered VIP 5+ Year Member

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    did you fflip your switch to HOT inside the cabin? it kinda takes a long time w the cap off and your filling it w fresh coolant for the fan to come on. like. 15 mins.
     
  6. zeroarmy27

    zeroarmy27 New Member 5+ Year Member

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    It does take quite a while for the fan to kick on on my HX. I replaced the radiator in it about a year ago and had the same worry, but the fan kicked on when it needed to. Take it for a small spin around the block and come back, if the fan still doesn't come on... wait a while. Watch the temp. gauge.
     
  7. takeachance

    takeachance New Member Registered VIP 5+ Year Member

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    yea i drove around the block afterward and i didnt hear it turn on but it seems the temp gauge on the dash was right about where its supposed to be. I just dont want it to overheat. The top hose was really hot though im not sure how hot its supposed to get.
     
  8. zeroarmy27

    zeroarmy27 New Member 5+ Year Member

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    it should be hot, bottom colder. That's the point. I had to let mine idle for about 10 mins after a 2 mile journey until the fan kicked on. I was worried about wiring/relay until it kicked on.
     


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