Truck went into limp mode while towing
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Tuned
Joined: Nov 2010
Posts: 251
Likes: 6
Truck went into limp mode while towing
I was towing a fairly heavy trailer yesterday (around 10k) and laying into the throttle to gain some speed before a big hill when I completely lost power. It slowed me down to about 10 MPH.
I was able to drive home at very slow speeds and the only way to get over 10 MPH (only up to about 20MPH was to very lightly accelerate up to speed. Any hard acceleration and it cut me off to 10 MPH. No warning lights of any kind going off...
Truck has a Hypertech Max Energy programmer on stage 2.
Any ideas??
I was able to drive home at very slow speeds and the only way to get over 10 MPH (only up to about 20MPH was to very lightly accelerate up to speed. Any hard acceleration and it cut me off to 10 MPH. No warning lights of any kind going off...
Truck has a Hypertech Max Energy programmer on stage 2.
Any ideas??
Lead Driver
Joined: Dec 2013
Posts: 9,762
Likes: 115
Did you run for codes?
Remove the programmer, clear codes and see what happens is what I would do...
If it does it in stock mode you should set codes. Then go from there.
Feel free to post your codes and issues after you go back to stock. I don't know that programmer and it's really tough to diagnose something with a programmer on, so don't take it as I am anti-programmer. If you get a Ford dealer to look at it, you'll need it deprogrammed regardless...
Remove the programmer, clear codes and see what happens is what I would do...
If it does it in stock mode you should set codes. Then go from there.
Feel free to post your codes and issues after you go back to stock. I don't know that programmer and it's really tough to diagnose something with a programmer on, so don't take it as I am anti-programmer. If you get a Ford dealer to look at it, you'll need it deprogrammed regardless...
Thread Starter
|
Tuned
Joined: Nov 2010
Posts: 251
Likes: 6
Did you run for codes?
Remove the programmer, clear codes and see what happens is what I would do...
If it does it in stock mode you should set codes. Then go from there.
Feel free to post your codes and issues after you go back to stock. I don't know that programmer and it's really tough to diagnose something with a programmer on, so don't take it as I am anti-programmer. If you get a Ford dealer to look at it, you'll need it deprogrammed regardless...
Remove the programmer, clear codes and see what happens is what I would do...
If it does it in stock mode you should set codes. Then go from there.
Feel free to post your codes and issues after you go back to stock. I don't know that programmer and it's really tough to diagnose something with a programmer on, so don't take it as I am anti-programmer. If you get a Ford dealer to look at it, you'll need it deprogrammed regardless...
Thanks. I just reset to factory settings and it's driving just fine.
I'd like to know what caused it but don't think the Hypertech programmer has a code reading function, unless there's one I'm unaware of (entirely possible).
Does anyone know if these programmers come with a code reading function?
Fleet Mechanic
Joined: Aug 2013
Posts: 1,313
Likes: 19
From: Louisiana
The problem lies with the Hypertech. I haven't even heard of that brand of tuner out there. You are breaking the golden rule of tuning these trucks.....Only tune on stock power!!!!! I would check everything over and sell your Hypertech. If your trying to use a tuner without deleting the DPF, I would go with one of the more known brands. H&S, Spartan, SCT, and there seems to be a handful of custom programmers now.
Lead Driver
Joined: Jan 2008
Posts: 6,180
Likes: 83
From: Georgia
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Lead Driver
Joined: Dec 2013
Posts: 9,762
Likes: 115
The problem lies with the Hypertech. I haven't even heard of that brand of tuner out there. You are breaking the golden rule of tuning these trucks.....Only tune on stock power!!!!! I would check everything over and sell your Hypertech. If your trying to use a tuner without deleting the DPF, I would go with one of the more known brands. H&S, Spartan, SCT, and there seems to be a handful of custom programmers now.
And as you said, Tofan, the brands you mentioned are the ones with the best reputation for the 6.7 Diesel Fords.
Going back to stock and having the truck behave properly makes me think that something is off with the programmer or programming in the programmer.
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Hotshot
Joined: Jul 2013
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is it a 3.x rear ?
what size tires?
are the present tires stock?
if not...was the tire size re-calibration done?
why didnt you reset transmission learned values?
does your truck have tow/hual mode? did you use it?
what size tires?
are the present tires stock?
if not...was the tire size re-calibration done?
why didnt you reset transmission learned values?
does your truck have tow/hual mode? did you use it?
FTE Legend
Joined: Mar 2017
Posts: 31,880
Likes: 9,172
From: Western NY
Thanks. I just reset to factory settings and it's driving just fine.
I'd like to know what caused it but don't think the Hypertech programmer has a code reading function, unless there's one I'm unaware of (entirely possible).
Does anyone know if these programmers come with a code reading function?
I'd like to know what caused it but don't think the Hypertech programmer has a code reading function, unless there's one I'm unaware of (entirely possible).
Does anyone know if these programmers come with a code reading function?
Hey guys, would there be a code stored in the ECM from that?
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