wrench symbol (electronic throttle control) - Ford Powerstroke Diesel Forum
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Old 03-07-2013, 02:13 PM
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Question wrench symbol (electronic throttle control)

05 6.0 lt runs good but one issue I cant seem to get around is this wrench symbol that pops up under high turbo boost conditions! I have had a diagnostic comp hooked up to try and capture a code and it shows nothing but the wrench light on the dash. . wont surpass about 18-20 psi of boost. Pull over, power down, power back up and off to grannies. most of the time it occurs, i am towing, but can make it happen climbing hills empty (my foot into the throttle) seems i can manage if i continually monitor the boost gauge but dodge chevy and other fords with similar loads are leaving me in the dust . Ford dealership has no express knowledge of this and tell me i need to bring truck into dealer ship with wrench light on. HELP!!!!
Last edited by gwark; Today at 01:54 PM. Reason: posted under wrong engine size
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Old 03-07-2013, 03:25 PM
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Do you have a monitor in your truck. I suspect your you oil cooler is clogged and it is throwing the wrench for your coolant and oil temp delta being too large.
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Old 03-07-2013, 03:51 PM
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no monitor on board new oil cooler installed when original egr packed it in 90000 miles
mabye lines clogged? had factory hand held monitor plugged in on a trip to see if I could trap a code or ? but nothing showed up each time
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Old 05-18-2014, 06:34 PM
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Just had this happen to me today. I decided to take the advice on here and drove it like I stole it. Well, I got up to about 80 and it acted like it was going to kick down a gear. The light popped on and it started slowing down. My son said the diags cannot read it because it's not a "check engine" error. My son talked to a guy that works at the Ford dealer. It's a Ford code that only they can read. AS PGreen said, it could be any number of things throwing the error. Oil cooler, EGR plugged up, turbo sticking. I'd look for a shop that does diesel work and have them check it.
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Old 07-10-2014, 05:09 PM
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Mine was a plugged oil cooler, being replaced at this time. $$$$$
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Old 07-13-2014, 04:16 PM
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same thing happened to my 04 f450 work truck. EGR cooler was problem. Keep us posted.
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Old 07-19-2014, 06:56 PM
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I just had the same thing happen to my 05 and it was the turbo sticking, bad egr value.

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Old 07-20-2014, 11:35 AM
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It's more then likely a turbo over/underboost condition or an oil cooler issue. Seeing as your boost readings seem low I'd think a turbo issue but but could be derating due to excessive oil temps. You really need to figure out what codes it's logging to narrow it down. If you find a logged code P012f then it's the oil cooler.
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