RAD. COOLING FAN STAYS ON CONSTANTLY WHENEVER KEY IS ON

  • Tiny
  • hugh thurston
  • 1995 Saturn SW2
  • 130,000 miles

Even on start up, to warm up, fan always on

Friday, November 4th, 2011 AT 11:21 PM

5 Answers

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Check the fan relay and check the temp sensor. If they are both good, check for shorts to power.

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Friday, November 4th, 2011 AT 11:23 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,864 posts

Just to add to this one the first thing I would inspect is the coolant temp sensor and the connector. That is the most probanly cause on that car.

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Saturday, November 5th, 2011 AT 12:12 AM
  • Tiny
  • hugh thurston
  • Member

I thank you for this information. Now I just have to find out where these sensors and relays are.

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Saturday, November 5th, 2011 AT 1:41 AM
  • Tiny
  • saturntech9
  • Expert
  • 28,864 posts

The fan relay is in the under hood fuse box but would be more concern with the coolant temp sensor and connector. The coolant temp sensor you want is the bottom one with a black wire and a yellow wire going to it. The connector you will be looking at the inside of it looking at the terminals they should be silver not blue or green if there blue or green you will have to replace the connector. To check the coolant temp sensor you will need a multimeter do you have one of those?The sensor is screwed into the head right below where the upper radiator hose goes onto the head.

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Saturday, November 5th, 2011 AT 1:52 AM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,410 posts

Let us know what you find. And thanks, Saturntech. Great to have you around. Hugh, just fyi, you got the best tech we have for Saturns helping. The guy can figure anything out for you. Do exactly what he says.

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Saturday, November 5th, 2011 AT 1:58 AM

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