High temp issues - Ford Powerstroke Diesel Forum
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Old 06-19-2012, 04:28 PM
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High temp issues

Well here the past week or so I have been having high temps. Well today my tranny made it to 174 while cruising empty coming home from work. Im not sure why but when im at slower speeds my temps rise. I hit 204 ECT 208 EOT while cruising 50-60 in construction zone but as soon as I hit 70 my temps lower back down to around 190-194 ECT 196-200 EOT outside temps mid 90s. This is all while running AC on high which my AC is also messed up. It blows cool then warm for a bit back and forth. With the AC on MAX it blows out the windsheild vents some and out my AC vents. Not really sure whats up with it.
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Old 06-19-2012, 04:54 PM
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I don't see a problem.

Sent from my SCH-I500
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Old 06-19-2012, 04:55 PM
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well lets start with the basic's. is your radiator clean? if your blow it out with air or with a pressure washer itll clean out your radiator and itll run cooler. for your ac im not to sure whats up with that. does it blow cold when your in the throttle?
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Old 06-19-2012, 05:29 PM
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Do temps normally rise at lower speeds? What are normal summer temps? This is my first summer with it last summer I was gone for military. I will have to check out the radiator. I know its not coated in mud cause I dont go mudding. It blows the same whether at idle or at throttle. Im thinking vacum leak somewhere cause my auto hubs will not lock in if on pavement. In mud it will just fine no issues as soon as i try on pavement it wont lock in
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Old 06-19-2012, 05:35 PM
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Start with the simple remedies first, clean your radiator. Pic below was mine with bugs and road grime, you'll be amazed the amount of dirt in between the fins.

Here is a PDF on the ESOF.
http://www.powerstroke.org/forum/att...-f350-esof.pdf


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Old 06-19-2012, 06:04 PM
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Ok lets start with the problems first. If your AC is blowing out the defrost vents you have a vacuum leak. The most frequent culprit is the auto locking front hubs. So jack the front end up, engage the 4x4 and see if the wheels lock in. If not the keep looking till you find the vacuum leak. Also check the refrigerant charge to make sure it isn't low.

Cleaning out the radiator is also a good idea but you have other issues.
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Old 06-19-2012, 06:22 PM
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If it is my Hubs how do I fix that? I have a feeling thats the issue. Is there and known places for vaccum leaks on the 6.0? I have NO IDEA how to go about looking for a vaccum leak to be honest lol I have never had to do it.
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Old 06-19-2012, 08:10 PM
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Quote:
Originally Posted by legionxxii View Post
If it is my Hubs how do I fix that? I have a feeling thats the issue. Is there and known places for vaccum leaks on the 6.0? I have NO IDEA how to go about looking for a vaccum leak to be honest lol I have never had to do it.
If it is your hubs you can temporarily pull those hoses and plug them one at a time to see if your ac starts to work correctly. If you are losing vacuum, I believe your heater valve will open and cause warm air to mix with your cold air. That wil give you the indication that your ac is not working correctly.

Sent from my SCH-I500
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Old 06-19-2012, 08:11 PM
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check this out......

HVAC Medic needed "Code Blue"

Sent from my SCH-I500
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Old 06-19-2012, 08:13 PM
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Quote:
Originally Posted by southend View Post
I don't see a problem.

Sent from my SCH-I500
On this I meant coolant temps.

Sent from my SCH-I500
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