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Old 10-07-2012, 03:05 PM   #1
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overheating problem

when I am driving I randomly overheat occasionally plus when my thermostat is open I have heat but when my thermostat is closed I have no heat any ideas?
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Old 10-07-2012, 03:30 PM   #2
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Temperature sensor needs to be replaced is what i would think.
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Old 10-07-2012, 04:02 PM   #3
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I'd probably drop in a new tstat when you replace your temp sensor. Have you had any work on your heater core or the hoses going to it?
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Old 10-08-2012, 12:30 AM   #4
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do what they said...plus burb your system
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Old 10-08-2012, 06:49 AM   #5
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I don't think it's a temp sensor because I am actually overheating

---------- Post added at 06:49 AM ---------- Previous post was at 06:48 AM ----------

plus I already replaced the thermostat and a radiator flush
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Old 10-08-2012, 07:44 AM   #6
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Quote:
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I don't think it's a temp sensor because I am actually overheating

---------- Post added at 06:49 AM ---------- Previous post was at 06:48 AM ----------

plus I already replaced the thermostat and a radiator flush
The temp sensed by the ECU could be off keeping the electric fan from coming on when its supposed to. Also, is your electric fan working okay?
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Old 10-08-2012, 01:01 PM   #7
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did you burb the system...because i swear on here 95% of the overheating issues turn out to be air in the system
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Old 10-08-2012, 04:00 PM   #8
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I burped it already still texting the problem
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Old 10-13-2012, 07:17 PM   #9
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check your fan mine had same problem
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Old 10-16-2012, 06:52 PM   #10
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You HAVE to bleed the air out of the system by removing the vent plug. ALSO- You have to drill the relief hole in the new thermostat before installing, and it goes in with the hole on top at twelve o'clock.
LINK:
180 Degree Thermostat in a 3.8L V6 Mustang
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Old 10-16-2012, 07:14 PM   #11
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You HAVE to bleed the air out of the system by removing the vent plug. ALSO- You have to drill the relief hole in the new thermostat before installing, and it goes in with the hole on top at twelve o'clock.
LINK:
180 Degree Thermostat in a 3.8L V6 Mustang
IMO, putting a 180 stat in your car doesn't make it run cooler. You engine oil needs to be at least 180 degF to flow and protect properly. Depending where you live, your engine temp will still get to 190-200 range anyway because that is what the system was designed to run. Your heater will just blow cool air in the winter. Your exhaust will rust out because the exhaust will not be hot enough to burn off any condensate that forms inside. If you really want to improve your cooling, get a larger radiator so you have more surface area to exchange the heat away from the coolant.
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Old 10-17-2012, 01:14 AM   #12
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Or just take out the tstat that's what I did and never hade any other probloms
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Old 10-17-2012, 05:40 AM   #13
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Or just take out the tstat that's what I did and never hade any other probloms
Its not good to run cold,,you go back in forth in open and closed loop,,you acually can lose HP
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Old 10-19-2012, 07:42 AM   #14
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Quote:
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IMO, putting a 180 stat in your car doesn't make it run cooler. You engine oil needs to be at least 180 degF to flow and protect properly. Depending where you live, your engine temp will still get to 190-200 range anyway because that is what the system was designed to run. Your heater will just blow cool air in the winter. Your exhaust will rust out because the exhaust will not be hot enough to burn off any condensate that forms inside. If you really want to improve your cooling, get a larger radiator so you have more surface area to exchange the heat away from the coolant.
My engine is modified, and tuned. I understand how an engine cooling system works.
180 degree thermostat is irrelevant, it could be a 191 degree stat!
-The article was to point out that
1)How to bleed air out of system properly
2)A relirf hole needs to be drilled in the new thermostat to operate properly.
That's All!
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Old 10-19-2012, 08:35 AM   #15
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Quote:
Originally Posted by robb15033 View Post

My engine is modified, and tuned. I understand how an engine cooling system works.
180 degree thermostat is irrelevant, it could be a 191 degree stat!
-The article was to point out that
1)How to bleed air out of system properly
2)A relirf hole needs to be drilled in the new thermostat to operate properly.
That's All!
You might have mentioned that in your original post in regard to the liked information.
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