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TheMasterTechSource, Senior Automotive Consultant
Category: Car
Satisfied Customers: 211
Experience:  ASE Master-37 YRS- Master Certified Tech and a Fixed Operations Specialist
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what is the normal operating coolant temperature and the ...

Customer Question

what is the normal operating coolant temperature and the overheat temperature for a 1999 DeVille cadillac with a northstar engine?
Submitted: 10 years ago.
Category: Car
Expert:  TheMasterTechSource replied 10 years ago.

Normal operating Temperature is from 195F to 235F and then coolant fans should be on

Anything above 260F is dangerous and overheat condition..

Never attempt to open the coolant system while in operating or overheat temps--wait till it cools down to ambient tempsWink


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