Wrench light while towing
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Junior User
Joined: Jan 2008
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Wrench light while towing
I was pulling my trailer up a fairly long hill, watching the ect got up around 210 and heard the fan come on. The eot was around 225 and I lost all boost threw the wrench light. Without the trailer in the summer the temps are around eot 200 ect 190.Wondering if the oil cooler is plugging up? 2007 6.0
Lead Driver
Joined: Oct 2010
Posts: 5,420
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From: Ouray, CO
The 15* delta probably set the CEL (since you have a 2007), but during towing the delta varies widely based on grade, wind, outdoor temp, etc.. so it's not a real way to determine IF your oil cooler is clogged.
The typical method is with engine up to temp (190) and to drive 65-ish on reasonable FLAT (NOT towing) interstate for 15 minutes or so watching the temps..
The typical method is with engine up to temp (190) and to drive 65-ish on reasonable FLAT (NOT towing) interstate for 15 minutes or so watching the temps..
Cargo Master
Joined: Oct 2009
Posts: 2,283
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From: missouri
I would agree. Pull codes and I bet there will be an over boost code. Probably time to clean it if that's the case.
Cargo Master
Joined: Oct 2009
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From: missouri
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Certified Thread Hijacker
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Scangauge definitely won't pull those codes.
Josh
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Cargo Master
Joined: Oct 2009
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From: missouri
Putting a load on it makes the turbo work harder. If there is some coking or rust on the unison ring or veins would be more likely to stick open and cause an overboost. I am sure if you were unloaded and wot up a hill would probably do the same thing.
Cross-Country
Joined: Jun 2004
Posts: 51
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I have had the same problem. Typically it occurs towing my car hauler with the cruise control on and I forget to turn off CC as I start up a grade. The tranny downshifts at least 2 gears increasing the revs and then the wrench light comes on.
Posting Guru
Joined: Jun 2012
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Randy, you're almost certainly going to need to pull the turbo and see if it just needs cleaning or needs a new turbo. You should have been able to see the boost going high fast just after it down-shifted, it will de-fuel and set the wrench light at around 32 lbs of boost, or so they say.
Brian
Brian