Coolant Temps Bouncing all over
Moderator
Joined: 01-23-2009
Posts: 26,484
From: Fredericksburg,VA
Not necessarily at high mileage, but impellers have been known to stop spinning for various reasons. Chain, bearing, impeller etc. The weep hole being on top in a hole doesn't help you noticing a bad bearing, like you used to be able to do. Plus the impeller is just a force fit onto the shaft.
Senior Member
Joined: 04-07-2014
Posts: 505
From: San Diego
Really, hmm. Mine does the same thing, but only on hot days and after driving it hard up a long hill.
I changed the coolant and thermostat and it stays 178-190 all the time except on really hot days where it does what this person is experiencing.
I know I did not add enough water to my coolant mix so I will be replacing it again soon.
If it was the pump would’t It fail to go back down in temperature at a stop?
I changed the coolant and thermostat and it stays 178-190 all the time except on really hot days where it does what this person is experiencing.
I know I did not add enough water to my coolant mix so I will be replacing it again soon.
If it was the pump would’t It fail to go back down in temperature at a stop?
Thread Starter
Member
Joined: 01-22-2011
Posts: 45
From: Tallahassee, FL
Mostly just in stopped or stop & go traffic. I ordered a new radiator and thermostat and will change out the fluid. I need to get this corrected since this is my work car that I drive all day.
Senior Member
Joined: 03-06-2010
Posts: 6,869
From: Ohio
Don't use anything but the proper AC-Delco thermostat and Dexcool... You don't want to have to do this twice.
