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Fan does come on right away

Tiny
PAUL IN LAKELAND, FL.
  • MEMBER
  • 2002 JAGUAR X-TYPE
  • 78,000 MILES
Should radiator cooling fan automatically come on when you start the car and stay on, or only when reaches certain temperature? Fan will actually not come on for quite awhile, ran a hot wire to test and fan works, small coolant leak and sometimes coolant reservoir back flows to radiator, but only showing half way mark on temperature gauge.
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Monday, January 9th, 2012 AT 5:05 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The coolant fan should come on right before it reaches 220deg's-Might want to test the coolant temperature sensor-
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Tuesday, January 10th, 2012 AT 10:27 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
It will also come on when the A/C compressor engages which could happen in defrost and some other modes in order to remove moisture from the air.
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Tuesday, January 10th, 2012 AT 11:03 AM

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