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

["cbl1739" <cbl302@xxxxxxxxxxxxx>]

Joe,


Seems like you may have a bad heater core(restriction or partial 
blockage),since this is part of the cooling system(and most likely 
orignal)it just might be causing a blockage in your cooling 
systen...not enough to cause problems on cool days...but on the 
really hot days,it may be slowing down the flow of coolant thru the 
system,(if there is a blockage or restriction) if possible try 
disconnecting the heater core(by putting a by pass tube)and if 
everything seems fine then you know that is your problem.If you 
cannot do that,then run the heater fan at full speed to see if the 
Temperature drops(a good idea to do on any Delorean that starts to 
overheat)If the Temp drops to normal or close to normal,then you know 
for sure that is your problem.
PS...heater cores on a Delorean require you to basically take your 
dash/interior.passanger seat/carpet,console etc, all apart to 
replace...A.P.I.T.A. to replace.

Claude


--- In dmcnews@xxxxxxxxxxxxxxx, Daryl Scott <daryl_scott32@...> wrote:
>
> Joe,
>    
>   How long has you car been doing this? Is it recent or right after 
the engine rebuild?
>    
>   Are you sure that both of your fans are coming on?
>   Is the engine belt for the pump properly tightened (i.e. not 
slipping on the pump pulley)?
>   Are you sure the water pump is pumping as it should?
>    
>   Just some questions to help point you in the right direction.
>    
>   Regards,
>   Daryl
> 
> Joe Angell <jangell@...> 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
> 
> 
> 
>                            
> 
>        
> 
> [Non-text portions of this message have been removed]
>



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