Fan not working properly and van is overheating

2004 TOYOTA SIENNA
50,000 MILES • V6
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DAVID33463
  • MEMBER
  • 1 POST
The fan works when I put on the A/C, but when the A/C is off my fan wont work and my car overheats. don't know what it my be. I checked the relay and is good.
Jun 16, 2019 at 5:09 AM
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MOTOR MASTER
  • ✓Experienced Mechanic
  • 279 POSTS
Hello my name is Dave.

It sounds like the most likely culprit is the engine coolant sensor located right front side of the engine. I would recommend having a scanner hooked up and see what temp the ECU is showing after it has reached operating temperature.
Jun 16, 2019 at 9:59 PM
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