07 Overheating Issues - Ford Powerstroke Diesel Forum
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Old 10-30-2012, 06:17 PM
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07 Overheating Issues

Im a Diesel Tech for a private company, Ive recently had an 07 F550 had all "normal" issues. Six months ago I replaced the EGR cooler with Bulletproof's the oil cooler is a stock replacement also replaced the thermostat, 3 months ago the hard start when hot popped up no problem dummy plugs and stand tubes along with a new ipr valve, but an overheating issue was also present pulled the water pump and replaced it with a Bulletproof, flushed the cooling system and put in a new Thermostat out of spite...still overheating...my night shift counterpart in an attempt to undermine me put on a pull type electric fan and set it at 200 degrees, still overheating...now Im loosing hair but Im thinking Ive narrowed it down to 2 possibilities the oil cooler stopping up, or the head gaskets, just asking for an opinion that will get my gears churning a bit with the best questions come the best answers and the best ideas
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Old 10-30-2012, 07:21 PM
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How about the radiator? Maybe is clogged.
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Old 10-30-2012, 07:37 PM
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A good field test to tell if you have a plugged radiator is with an infrared thermometer is shoot the inlet and outlet of the radiator you should have a 10 to 15 degree difference in temps.
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Old 10-30-2012, 07:52 PM
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I'll take a gander at it. However like I said I did do a full system flush on it and also acid cleaned the fins out.

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Old 10-30-2012, 08:01 PM
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Yeah I agree here check the radiator first then start checking the cooling system for head gasket problems.

On Edit: Is the fan engaging when it is overheating?
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Old 10-30-2012, 08:07 PM
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The clutch fan and the the electric fan are both kicking in the truck is supposed to be towed in tonight so I'll get a look at it in the a.m.

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Old 10-30-2012, 08:07 PM
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I would start with the radiator then start checking for head gaskets.
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Old 10-31-2012, 03:17 AM
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There is also a chance that during your flushing you may have loosened up some stuff that now broke loose and clogged your new oil cooler.
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Old 10-31-2012, 01:49 PM
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As stupid as this sounds, have you replaced your coolant cap? Stock caps are crap. $5 will buy you some insurance and get you a cap that'll hold the proper pressure and keep your coolant from boiling prematurely. Check out this vid for more info:

I just bought the new cap the other day for $4.99. Cheap insurance. I had never given it much thought until I ran across this vid on youtube. Now I'll replace the cap every 30k miles, as should everyone running these trucks.
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Old 10-31-2012, 01:54 PM
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Quote:
Originally Posted by Waz 6.0 View Post
As stupid as this sounds, have you replaced your coolant cap? Stock caps are crap. $5 will buy you some insurance and get you a cap that'll hold the proper pressure and keep your coolant from boiling prematurely. Check out this vid for more info: $5 PART WILL SAVE YOUR POWERSTROKE FROM SELF DESTRUCTION - YouTube

I just bought the new cap the other day for $4.99. Cheap insurance. I had never given it much thought until I ran across this vid on youtube. Now I'll replace the cap every 30k miles, as should everyone running these trucks.
I saw this video too and followed Bill's advice, a $5.00 radiator cab can save you a lot of headaches.
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