limping home
Thread Starter
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Junior User
Joined: Aug 2014
Posts: 86
Likes: 0
From: Wi. Rapids, WI
limping home
Like so many others, I have seen the "wrench" display itself. The problem is that I just bought this beast - 2005 6.0 l with 74,000 original miles. REALLY!
On the first trip, pulling a 7000lb trailer, I get the wrench after 40 miles. I have read from so many forums and there does not seem to be a definitive answer to this particular problem. Idles well, runs great without a load, no coughing, farting, burbing, nothing unusual other than this loss of power and its not being used hard. Happens on the level while cruising at 1750 rpms. Someone has got to know the cause. Please. Thanks!
On the first trip, pulling a 7000lb trailer, I get the wrench after 40 miles. I have read from so many forums and there does not seem to be a definitive answer to this particular problem. Idles well, runs great without a load, no coughing, farting, burbing, nothing unusual other than this loss of power and its not being used hard. Happens on the level while cruising at 1750 rpms. Someone has got to know the cause. Please. Thanks!
Strokin Okie
Joined: Apr 2004
Posts: 1,883
Likes: 21
From: Oklahoma
Typically shutting the truck off and turning it back on will reset the limp mode condition. You will want to see if there are any codes. Just my guess, is probably an over/under boost condition. I had the same issue pulling a load, and had a p0299 code. There are a handful of things that can cause this, and most of them are pretty easy to fix/check.
Fleet Mechanic
Joined: Jul 2013
Posts: 1,402
Likes: 114
From: Tuscaloosa, AL
Start with cleaning the egr valve.
Next step, you gotta get some gauges. I use torque pro and it will do 90% of what you need. It'll cost $5 for the android app and $20 for a good Bluetooth reader from fleabay. There are other options, but all more expensive. Next least expensive option is scan gage ii.
Without gauges, you will chase your tail a lot.
Next step, you gotta get some gauges. I use torque pro and it will do 90% of what you need. It'll cost $5 for the android app and $20 for a good Bluetooth reader from fleabay. There are other options, but all more expensive. Next least expensive option is scan gage ii.
Without gauges, you will chase your tail a lot.
Cargo Master
Joined: Oct 2009
Posts: 2,283
Likes: 0
From: missouri
You are correct. That's why he needs something to measure the temps and other vitals to see what's going on, and prevent future hg's problem, if that's why it's throwing the light. I was actually thinking the same thing.
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Elder User
Joined: May 2008
Posts: 765
Likes: 0
From: Patricia, Alberta
Just what I was thinking too. IF it has the latest flash. You could check at a dealer if the pcm has been reflashed to VXCF9
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Thread Starter
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Junior User
Joined: Aug 2014
Posts: 86
Likes: 0
From: Wi. Rapids, WI
Limping home
Thanks to all for your input!!! I need to acquire the appropriate code scanner then get on with a resolution (I hope). I'm so new to diesels its embarrassing. EGR cleaning is on for this afternoon however, I have seen no evidence of white smoke and the darn thing runs so good (except when loaded) I'm stumped. Have a had a really bad experience with the almost local ford dealership and my V10 Super Duty. Yup. Got one of those spark plug throwers also. Anyway, thanks again. I'll stay with you guys and hopefully learn something.
Thread Starter
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Junior User
Joined: Aug 2014
Posts: 86
Likes: 0
From: Wi. Rapids, WI
Pulled the EGR today. I've never seen an interior part as disgusting as this was. Caked with carbon (actually chunks that could be flicked off). If it has ever been out, I'd be surprised. It couldn't possibly have been working right. Bottom O ring is marginal so replacing all. This may not solve my problem with the "wrench", but it sure can't hurt. Thanks for the tip.
Fleet Mechanic
Joined: Sep 2013
Posts: 1,303
Likes: 84
Pulled the EGR today. I've never seen an interior part as disgusting as this was. Caked with carbon (actually chunks that could be flicked off). If it has ever been out, I'd be surprised. It couldn't possibly have been working right. Bottom O ring is marginal so replacing all. This may not solve my problem with the "wrench", but it sure can't hurt. Thanks for the tip.
