HOW DO I KNOW IF I NEED TO REPLACE MY WATERPUMP

  • Tiny
  • tbenson1987
  • 2000 Saturn SL1
  • 45,500 miles

My coolant is not staying in as long as it should. My car starts to run hot after about 35 minutes and when I am stopped at a light that is when my temperature gauge starts to go up to hot

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Thursday, September 6th, 2012 AT 8:42 PM

10 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

Is your radiator fan working? Also if your AC works turn it on does the radiator fan come on with the AC?

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Thursday, September 6th, 2012 AT 9:19 PM
  • Tiny
  • tbenson1987
  • Member

Yes the fan is working and when I turn on the act it blows cold and the fan comes on

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Friday, September 7th, 2012 AT 1:36 AM
  • Tiny
  • tbenson1987
  • Member

*a/c

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Friday, September 7th, 2012 AT 1:38 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

How high is the gauge getting?Also ia the radiator fan on when the gauge is reading hot?

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Friday, September 7th, 2012 AT 1:39 AM
  • Tiny
  • tbenson1987
  • Member

It stays a little over the half point and if I drive it long periods at a time it starts to hit the red when I'm stopped at lights. Most of the time it will stay at half as long as the car is moving

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Friday, September 7th, 2012 AT 5:14 AM
  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

If it will only overheat heat while idling then it sounds like the radiator fan is not working. So the radiator fan that is behind the radiator in the engine compartment turns on with the ac on and blows tons of air?

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Friday, September 7th, 2012 AT 3:31 PM
  • Tiny
  • tbenson1987
  • Member

Whe the air is on the radiator fan does come on.

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Friday, September 7th, 2012 AT 5:27 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

Then I would start by replacing the coolant temp sensor sounds like its not reading correctly and turning the fan on at the correct temo. Also inspect the inside of the connector to it if the terminals are blue or green instead of silver then you will need to replace the connector also.I have reolaced tons of them its a common failure.I have owned my 1999 saturn sl2 for 6 years and have replaced four of them so far.

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Friday, September 7th, 2012 AT 6:53 PM
  • Tiny
  • tbenson1987
  • Member

Ok thanks

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Friday, September 7th, 2012 AT 7:22 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,451 posts

Keep me posted.

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Friday, September 7th, 2012 AT 7:34 PM

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