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Cooling fan causing problems

Tiny
JERRY57000
  • MEMBER
  • 2001 SATURN STATION WAGON
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
When cooling fan comes on it stays on and engine loses power and transmission does not shift properly. Only solution is to turn engine off for a few minutes and restart it.
Friday, April 19th, 2019 AT 3:08 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome to right turn signal or brake to light up

Since these things normally don't happen together, I have to try to find a common element which can cause it. The first thing that comes to mind would be a bad ground. When the fan is on, it is drawing and requiring more from the grounding system. With that, I first recommend checking the ground between the battery and engine block. Make sure nothing is loose or corroded. Also, there is a body ground from the battery (see pic 1). Check it also.

Next, check the ground responsible for the fan control module and fan (G100). See picture 2. Same thing there. Make sure everything is tight, clean, and not damaged.

Let me know what you find.

Take care,
Joe
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Friday, April 19th, 2019 AT 8:13 PM
Tiny
JERRY57000
  • MEMBER
  • 2 POSTS
Checked all grounds and all were good. I replaced the fan temperature switch and that seemed to solve the problem. The old temperature switch must have had a short or something wrong with it.
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Friday, May 10th, 2019 AT 4:02 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Welcome back:

Great, I'm glad you found it.

Take care and let us know if we can help in the future.

Joe
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Friday, May 10th, 2019 AT 9:08 PM

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