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Overheating

Tiny
PEEWEE82
  • MEMBER
  • 2001 CHEVROLET IMPALA
  • 3.4L
  • V6
  • FWD
  • AUTOMATIC
  • 119,000 MILES
New water pump, new thermostat, new used engine bled the system still over heating fan is coming on. Is both fans soppose to come on water seems to flow back in the resvoir, but its not hot just temp gauge keeps going up, o yeah replaced coolant sensor too
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Sunday, June 11th, 2017 AT 6:31 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Both fans should come on when A/C is on when engine hot disconnect fans and check radiator for cold spots. Then rent a pressure checker from auto parts and pressure check for internal leak like a head gasket. You can also purchase chemical to add to radiator for same thing either are good.
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Thursday, January 31st, 2019 AT 6:40 PM
Tiny
PEEWEE82
  • MEMBER
  • 2 POSTS
How about when the AC is not on?
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Thursday, January 31st, 2019 AT 6:40 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Then it is normal for only one fan until it gets hot then other fan kicks in. Check all of your fan relays in under hood fuse box. See picture there are five check all of them two may be fuses.
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Thursday, January 31st, 2019 AT 6:40 PM

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