Re: [DML] Running hot when it's hot out
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Re: [DML] Running hot when it's hot out

Are the fans running in the correct rotation?


Joe Angell wrote:
> Here's a mystery I've had for some time now:  When it's hot out, my  
> car runs hot.  It's fine most of the time, but once it gets above ~70  
> degrees out, the car starts to run hotter than it should.
> For example, if it's ~80 degrees out, the car might run at 220 or so  
> when moving at highway speeds (~3000 RPMs or so, I'd guess; whatever  
> 70 MPH comes out to in 3rd on an automatic).  When ~100 degrees out,  
> it gets up t 240, the first redline on the temp gauge.  It will drop  
> back down a bit once I get off the highway, but not down to the  
> acceptable range.
> I checked for coolant leaks and found none.  The coolant bottle was  
> about 1/2 full, as it should be.  I bled the system at the radiator  
> and water pump and found no air at all.  I replaced the thermostat  
> about a year ago, but this made no difference.  The water pump is  
> about 5 years old, which is when I had an engine overhaul done.  The  
> radiator is one of the new triple-core brass ones, also 5 years old.   
> The cooling fans are running fine, and go on at the proper temperature.
> Any suggestions on what I should check next?  It's rather  
> infuriating.  I was thinking of bringing it to a radiator shop and  
> having them purge the system, but I'm not sure if that would help.
> Thanks!
> -- Joe


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