Overheating

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May 13, 2018 | 03:11 PM

beemr

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Overheating

2003 6.0 auto

Truck will run hot, factory gage showing midway between H & C after driving 15 miles from a cold start (in 90 degree weather), no load running about 30mph start & stop traffic. Degas bottle has water, and heater blows hot.

Any suggestions on how to diagnos?

May 13, 2018 | 03:25 PM

FiznUKa

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From: Salt Lake City, utah

Get a better monitoring device so you can know for sure what the temp is. Download ForScan and get an ELM adapter.

May 13, 2018 | 05:57 PM

DSMMH

Fleet Mechanic

Joined: Jun 2006

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Check the upper radiator hose to see if it is hot or warm or cool. If warm or cool probably stuck or bad T-stat.

Ed

May 13, 2018 | 07:36 PM

T diesel

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Once you get a monitor and can identify that your truck is overheating, my bet is the water pump.

May 13, 2018 | 09:55 PM

Ford.Dude

More Turbo

Joined: Jan 2017

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Bad fan clutch cause my overheating which lead to headgasket leak. Fan was not engaging. Fan speed will register on torque pro if working properly. No reading then no fan. Get a bluetooth adapter for the obdII port and download torque pro from google play. Get temps and fan speed.

May 14, 2018 | 06:00 AM

T diesel

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One more thing, make sure the cooling fins
aren’t blocked.

May 14, 2018 | 04:45 PM

beemr

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Where is a good place to get adapters for reading data? I assume I can use my iPhone?

Yesterday I borrowed a Bosch scan tool...drove it around for about 30 minutes in the afternoon...it showed 161 degrees & 162 degrees. The tool did not specify which was EOT or ECT. This time, it only registered about 1/4 of the way on dash gage, which has been the norm.

Today, it ran cool all day even after driving 120 miles, until late afternoon where it got almost to midpoint again on the way home.

On water pump...are you saying maybe the impellers are breaking/wearing, and it's not flowing at maximum?

The fan comes on, but I don't know how to test it's efficiency...

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May 14, 2018 | 05:02 PM

beemr

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Will Quicklink adapter work with Torque Pro on iPhone?

May 14, 2018 | 05:09 PM

#10

AGE mechanic

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From: Arizona

161 F, Your engine isnt even warmed up

May 14, 2018 | 05:11 PM

#11

AGE mechanic

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From: Arizona

Also, what do you mean by overheating?

May 14, 2018 | 05:23 PM

#12

beemr

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My use of the term "overheating" was based on the gage reading halfway between H & C....it has never done that. Usually, it is only about 1/4 of the way off of C.

Also, when it it got to that temperature range, after turning it off I would have to wait until it cooled down before it would restart....I'm hoping it is just the hot oil not providing enough viscosity to allow the HPOP to obtain enough psi

The Bosh reader did provide the following codes yesterday:

P 0113 Intake Air Temp Sensor, 1 circuit high input
P 0261 Cylinder 1 Injector circuit low
P 0264 Cylinder 2 injector circuit low
P 0267 Cylinder 3 injector circuit low
P0269 Cylinder 3 contribution/balance
P 0270 Cylinder 4 injector circuit low
P 0273 Cylinder 5 injector circuit low
P 0276 Cylinder 6 injector circuit low
P 0279 Cylinder 7 injector circuit low
P 0821 Cylinder 7 contribution/balance
P 0282 Cylinder 8 injector circuit low
P 0401 Exhaust gas recirculation flow insuficiant detected
P 2291 Injector control pressure too low-engine cranking
P 2623 Injector control pressure regulator circuit/open
U 0306 Software incompatibility with fuel injector control module

May 14, 2018 | 05:50 PM

#13

FiznUKa

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Joined: Mar 2014

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From: Salt Lake City, utah

You will need a WiFi adapter for the iPhone. Torque pro is an android OS so you will want FORScan

check amazon and search FORScan adapter.

May 15, 2018 | 07:01 AM

#14

bismic

Fleet Owner

Joined: Nov 2003

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When you get the right scan tool, post up your coolant and your oil temperatures. It would be helpful to see the values after a good cold soak (12 hrs of not running the engine), and then after they stabilize under normal highway driving.

I agree w/ FiznUKa, get the ForScan software and buy an ELM327 wifi adapter. IMO the BAFX adapters seem to work the best.

Also, it looks like you might have a FICM issue. Is this truck original to you? Do you know the history on the FICM (is it an OEM unit or aftermarket)? How old is it? Has it been removed and re-installed lately?