2003 F 350 6.0 - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 16 (permalink) Old 07-22-2014, 11:38 PM Thread Starter
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2003 F 350 6.0

My 2003 F350 has been an absolute work horse and has over 300K on it . Recently there a small leak in the radiator . I had the radiator replaced and now the truck overheats all the time . Any suggestions ?

If I leave the truck idling it does not overheat but start driving it and it overheats within a couple of miles

Any advice greatly appreciated
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post #2 of 16 (permalink) Old 07-22-2014, 11:51 PM
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Thermostat. They do go bad.

Dave

2004 Ford F-350 Regular cab with 6.0.
Completely Stock.

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post #3 of 16 (permalink) Old 07-23-2014, 02:03 AM
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Who replaced it? I'd agree thermostat but suprised they didn't suggest it when the radiator was changed out. What coolant did they put in hopefully ford gold flavored. I had to replace mine and found a good used one at the spare parts yard.

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #4 of 16 (permalink) Old 07-23-2014, 03:06 AM
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Is the fan clutch hooked up and working?

Harry

Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)
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post #5 of 16 (permalink) Old 07-23-2014, 07:19 PM Thread Starter
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Thank you very much for taking the time to respond . The radiator was replaced by Meineke . They also installed a new thermostat after I returned the truck because it was seriously overheating . However this did nothing to stop the problem

Is it possible that a blown gasket would be causing the problem ? If so any idea what I should expect to pay to resolve the problem

I will try the ford gold coolant but it would appear that the over heating is so serious that there must be a more serious problem .

Not sure about the fan ? How would I confirm whether it is working ?

Again thank you very much for the advice
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post #6 of 16 (permalink) Old 07-23-2014, 07:57 PM
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Hold on there. If you suspect a blown headgasket; you had best verify that it is shot. Here is a kit to test the presents of CO2 in the coolant: http://www.marineandreef.com/Hagen_F...KgYaAjaI8P8HAQ

Good Luck!

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2004 Ford F-350 Regular cab with 6.0.
Completely Stock.

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http://bennettlaneshopping.com/ - Our Outdoor/Garden and Kitchen Ware store
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post #7 of 16 (permalink) Old 07-24-2014, 02:38 AM
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You need to find out what coolant they put in it. If they used green glycol you will have a clogged oil cooler and EGR cooler which will be a big problem fast.

Fan will lock up around 225 coolant temp and roar like a jet engine. You can pick up a scangauge to see the fan speed. I'd recommend it to see your oil and coolant temp.

Engine rpm 2000 at 190 deg fan speed around 600-700
Engine rpm 2000 at 215 deg fan speed around 1500 rpm
Engine rpm 2000 at 225 deg fan speed around 3000 rpm.

http://www.scangauge.com/products/scangaugeii/. Pick them up online or autozone.

When you say overheating is that the temp gauge or is coolant coming out of the degas(coolant) tank?

Early 2004 F-250 4x4 CC 6.0


2nd owner, ARP studs 1 at a time, Some parts missing in the exhaust path, BD intercooler hoses, Blue spring, MC filters, Sinister coolant filter, Exhaust manifold gaskets, WARN lockouts, Gold coolant, zoodad mod, autometer boost gauge, high idle mod, Scangauge 2, SCT X3 tuned from KEM, autometer fuel pressure gauge, Archoil 6200 in the fuel, FICM by Ed w/ATLAS40, autometer pyro gauge,'08 Alum Rear Diff cover, 5w-40 Rotella T6 w/ Archoil 9100 in it, zert in the slip joint, harpooned fuel tank, 6.4 banjos


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post #8 of 16 (permalink) Old 07-24-2014, 10:22 PM Thread Starter
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I am using Dexcool Prestone coolant . I notice the roaring sound when it begins to overheat ( I'm glad I now know what this is ) . Usually begins to happen after about 5 miles

The gauge then goes off the charts and there is a tremendous amount of steam , pressure and fluid on the degas tank lid - just going near it looks as if it's about to explode

Again , much appreciate the advice . Just trying to make smart financial decision on trucks future ( I got a new transmission and new fuel injectors last year )
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post #9 of 16 (permalink) Old 07-25-2014, 01:54 AM
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Got to start from the begining on this one...

1. Was it overheating like this before you took it in for the radiator?

2. Dexcool is the wrong coolant to mix with any of the original Ford gold coolant and can contaminate and clog the cooling system if the two were mixed.

3. I'm suspecting your cooling system is either totally clogged up and contaminated, or you have a blown egr cooler or blown headgasket-s or both, especially if it's puking coolant out of the cap.


Harry

Jan 03' built 6.0/F250cc4wd trqsft/SCT-tuned by KEM-Performance/Garrett Powermax vg-turbo/blue spring mod/gauges=egt+boost+fuel+SG2/exhaust/airaid intake/DR 4.5 lift/dual bilsteins/315's/greasable ball joints/powerstop/smittybuilt/kc lights/high idle mod/roll-n-lock/Mobil Delvac1 ESP 5W40 with (Archoil AR9100 in the oil) and (AR6200 in the fuel)
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post #10 of 16 (permalink) Old 07-25-2014, 03:33 AM Thread Starter
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Great questions Harry . The strange thing is that it only began to overheat when the radiator was replaced . The radiator had a small leak for at least 6 months and we never had any over heating issues until we replaced it

Ok - need to use correct coolant .

Sounds more and more like a blown gasket - just strange that we only had issues once the radiator was replaced ?
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