New engine overheating with heat on?
#1
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New engine overheating with heat on?
I just put a rebuilt long block into my truck last week, and when I turn my heat on, my temp guage almost immediately will rise near about to the red. If I pull the lever back to cold, it starts to come back down. I have no problems while driving it until I turn the heat on. I'm guessing I have an air lock but can't seem to fix the prob.
Any help is appreciated.
Any help is appreciated.
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Okay. Had to ask. The sending unit for the gauge is above the outlet for the heater core so I though that maybe a hose was blocked and opening the heater caused coolant to divert through the core and recirculate back to the engine without getting to the radiator thus not cooling off well. By the same token, if you're getting hot air out of the heater, there's likely not a bubble.
What rating is the t-stat? ... and it is new too, right?
You're using coolant and not straight water?
What rating is the t-stat? ... and it is new too, right?
You're using coolant and not straight water?
Last edited by abecedarian; 02-15-2010 at 11:50 AM.
#6
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Maybe you could use a dual stage thermostat?
This is the part number you'll need to give to the Toyota dealer, otherwise they probably won't know what you are talking about. 90916-03070
This is the part number you'll need to give to the Toyota dealer, otherwise they probably won't know what you are talking about. 90916-03070
Last edited by pruney81; 02-15-2010 at 01:06 PM.
#7
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I just put a rebuilt long block into my truck last week, and when I turn my heat on, my temp guage almost immediately will rise near about to the red. If I pull the lever back to cold, it starts to come back down. I have no problems while driving it until I turn the heat on. I'm guessing I have an air lock but can't seem to fix the prob.
Any help is appreciated.
Any help is appreciated.
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#10
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Depending on how much it is, I may just drill some holes in mine.
Only thing that bothers me is that, my old motor would run a little warmer with the heat on , but the temp guage would never spike up close to the red like it is doing now, and my old t-stat was just a standard t-stat, just like the one I put back in.
Oh and thanks for the help guys.
Only thing that bothers me is that, my old motor would run a little warmer with the heat on , but the temp guage would never spike up close to the red like it is doing now, and my old t-stat was just a standard t-stat, just like the one I put back in.
Oh and thanks for the help guys.
#11
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Depending on how much it is, I may just drill some holes in mine.
Only thing that bothers me is that, my old motor would run a little warmer with the heat on , but the temp guage would never spike up close to the red like it is doing now, and my old t-stat was just a standard t-stat, just like the one I put back in.
Oh and thanks for the help guys.
Only thing that bothers me is that, my old motor would run a little warmer with the heat on , but the temp guage would never spike up close to the red like it is doing now, and my old t-stat was just a standard t-stat, just like the one I put back in.
Oh and thanks for the help guys.
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