View Single Post
Old 12-18-2012, 04:04 AM   #43
Registered User
Join Date: Aug 2008
Location: Sydney
Posts: 3,372
My Ride: 332Ci
Originally Posted by Brissyjohn View Post
It all depends on what the coolant temp reached. A large variety of conditions can cause the coolant temp to rise and the fan should come on at a certain temperature to get the air flow up - it's the only option the system has left at that stage.

If the fan doesn't come on due to a faulty sensor, faulty fan motor or dodgy electrical connection or something, then the overheat condition will continue until one or more of the other variables is changed for the better.

I never rule out anything...but I have never (in many decades) seen intermittent mechanical water pump failure.
Coolant temp got up to 114 from normal running temps (88-92) in less than 2 minutes. Do you think a fan kicking in at 60-80ks an hour would've prevented that? (serious question, I am only just learning about cooling systems).

Last edited by DeclanM3; 12-18-2012 at 04:05 AM.
DeclanM3 is offline   Reply With Quote