Can a heater core cause the car to overheat ?? - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com
 
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Old 09-11-2009, 06:58 PM   #1
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Can a heater core cause the car to overheat ??

Hey I just have a quick question, can the heater core in a 2g awd turbo cause the car to slightly overheat if it is clogged ??

ALSO another thing I noticed is that if I'm in a carwash with the heat on I would see some coolant dripping on the passenger side floor, could that cause however the car does not over heat like that its only when I start the car for the first time, I just want to know if a heater core can cause the car to over heat. THATS ALL.

Please no HG suggestions, I know its either the heater core or the radiator, I just want to see if its possible for the heater core to over heat.
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Old 09-11-2009, 07:00 PM   #2
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Re: Can a heater core cause the car to overheat ??

Yes happened to me! And yes coolant on the passenger floor means blown heater core.
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Old 09-11-2009, 07:09 PM   #3
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Re: Can a heater core cause the car to overheat ??

Hmmm, so when you replaced that did your car stop over heating, as for the coolant on the floor that ONLY happens when im in a car wash with the heat on NOT ANY OTHER TIME, so could it still be that.
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Old 09-11-2009, 07:18 PM   #4
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Re: Can a heater core cause the car to overheat ??

Anyone else???
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Old 09-11-2009, 07:20 PM   #5
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Re: Can a heater core cause the car to overheat ??

No it will not cause it to overheat unless it is leaking.
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Old 09-11-2009, 07:24 PM   #6
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Re: Can a heater core cause the car to overheat ??

Ok just to clarify it will cause the car to overheat due to loss of coolant not pressure in the system (causing tstat not to open) right ?
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Old 09-11-2009, 07:42 PM   #7
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Re: Can a heater core cause the car to overheat ??

bump
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Old 09-11-2009, 08:17 PM   #8
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Re: Can a heater core cause the car to overheat ??

Do Not Bump Up Posts, Especially, After Only 18 Minutes!
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Old 09-11-2009, 08:23 PM   #9
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Re: Can a heater core cause the car to overheat ??

Well Im trying to get a quick question, I mean im not trying to be an ass but I'm sort of in a hurry.
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Old 09-11-2009, 08:33 PM   #10
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Re: Can a heater core cause the car to overheat ??

Did you bypass the heater core? If you bypass it and your car works great then you know its the heater core.
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Old 09-11-2009, 08:53 PM   #11
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Re: Can a heater core cause the car to overheat ??

I want to try that, If I want to do that all I have to do is bend the line comming out of the water pipe upwards to connect it to the tstat housing yea ?
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Old 09-11-2009, 09:11 PM   #12
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Re: Can a heater core cause the car to overheat ??

I don't know what you just said, but if you said, "take the two radiator hoses that go to the firewall and connect them together." Then I would say yes.
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Old 09-11-2009, 10:28 PM   #13
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Re: Can a heater core cause the car to overheat ??

Yea, thats what I said in other words though, Kk thanks for info.
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