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Old 04-01-2012, 09:53 PM   #1
teefivetee
Scooby Newbie
 
Member#: 296046
Join Date: Sep 2011
Vehicle:
2005 sti

Default Rad cap doesnt get hot while driving

relatively new rad cap on my 05 sti....
the top reservoir cap gets super hot, the rad, top rad hose does too...

but my rad cap never ever gets hot while driving, itll get kinda warm when the car is coolling off after awhile, but even that doesnt seem normal to me....

any ideas here guys? anything else i should be looking for?


thanks

BTW its oem!
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Old 04-02-2012, 09:08 AM   #2
Bacon117
Scooby Specialist
 
Member#: 118500
Join Date: Jun 2006
Chapter/Region: MWSOC
Location: Michigan
Vehicle:
02 Silver Wagon
"Stage 2"

Default

Is the car overheating? Anything else wrong? It sounds normal, as a lot of coolant doesn't flow through the cap, just enough to keep the system under normal pressure. The cap will get hot as the coolant expands and goes into the overflow tank, but once the coolant reaches operating temperature, nothing should flow through it anymore. Also, once the coolant starts to contract, it will suck the coolant from the overflow, which should now be relatively cool.
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