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What causes my cooling system to run warm?

Tiny
MR. NOBODY
  • MEMBER
  • 1996 BUICK ROADMASTER
  • 85,000 MILES
Coolant check=ok
rad. Check cold ==ok
idler for water pump=ok
right fan works. Lowers temp. Some
left fan never starts.
heater core changed
thermostat changed
hoses ok
Wednesday, November 30th, 2011 AT 4:19 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Are you saying the engine overheats? How hot does it get in degrees F? Do you have coolant flow through the system?
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Wednesday, November 30th, 2011 AT 5:09 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The primary fan should come on at 225 degrees F. The secondary fan should come on at 232 degrees F. The fans can also come on with the ac.
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Wednesday, November 30th, 2011 AT 5:13 PM

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