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

I don't think you have all of the air out of the cooling system. 
Probably at the radiator. The integrated bleeder (small hose from the 
top of the radiator on right side) may not be working, stopped up, 
hose in a bind, etc. Also, air can get trapped in the right bank head 
near the temp sensor. Can you elevate the rear - like on a steep 
driveway to bleed?

The torgue converter creates a LOT of heat and heats the return 
coolant - that's why automatics run hotter than 5 speeds. 

Harold McElraft - 3354

--- In dmcnews@xxxxxxxxxxxxxxx, Joe Angell <jangell@...> wrote:
> Here's a mystery I've had for some time now:  When it's hot out, 
> car runs hot.  It's fine most of the time, but once it gets above 
> 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 
> when moving at highway speeds (~3000 RPMs or so, I'd guess; 
> 70 MPH comes out to in 3rd on an automatic).  When ~100 degrees 
> it gets up t 240, the first redline on the temp gauge.  It will 
> 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 
> about 1/2 full, as it should be.  I bled the system at the 
> 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.  
> radiator is one of the new triple-core brass ones, also 5 years 
> The cooling fans are running fine, and go on at the proper 
> 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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