The fact remains that there was a sudden acceleration incident that resulted in APPS codes. I think the dealership would be found negligent in case of an accident for letting you back on the road without even attempting to fix the problem. It's one thing to misdiagnose a problem and replace a perfectly good part, but to ignore a serious safety problem is criminal, or should be!

 

The problem is now she won't drive it. And I am afraid to let her. She is driving my Ford guess I can go get another one.

 

Hmmm was the customer perfectly honest with the service dept? (ie did you tell them about the tuner box?) Betcha he didn't.......
Misdiagnosis with misinformation.

 

Our trucks throttle control is drive-by-wire.

There's no way a fueling box that alters rail pressure can result in a full throttle run.

Something has to tell the ECM to keep the injectors open, or something has to have control over the injectors themselves. They are electronically fired, and the ECM controls timing and pulse-width.

You can have the rail at 26,500 psi at idle, and all you'll get is an erratic idle with loud noise from the injectors. Run a pressure box on it's highest settings for a while and you'll understand. When you come down to idle from WOT, there's rattling from the injectors until rail pressure bleeds off. There may be an outside chance the idle may be a little higher, but as I understand it, the ecm will adjust the pulse-width to keep the idle at 750.

So, please explain how the Edge EZ had something to do with the APPS codes. I like learning more about our great trucks, so educate me. It may save me from having problems in the future.

 

Actually I did tell them about The Edge EZ. But their answer was they didn't see how that would cause the problem.

Bill

 

JD, I agree, I wouldn't let my significant other drive my truck or her truck for that matter if she didn't have the ability to control it under the worst case scenario. Like I said, something similar happened to me, I knew how to handle it. These trucks have the power to drive through buildings, people, other vehicles. Crap happens. If you don't have the skill set or willingness to learn how to handle these trucks then stick with the best vehicle that matches your skill set. It is like the 95 pound girl walking her two rottweilers or her boyfriends pitbulls. If the dogs want to go eat or maime something they will. How often do we see incompetent drivers driving a rig they have no clue how to handle. Its like people driving these trucks at 120 mph on q speed rated 35 inch tires with different pressures in every tire pulling a toy hauler. Yep the trucks can do it, but if you don't check the tire pressure, check the bearings, check the tire temps and have the braking capacity to match the speed then you may be unlucky. I sometimes drive a little faster than I probably should but I've had lots of experience handling my vehicle and others in difficult situations and I make sure my vehicle doesn't interfere with others. ks.

 

I've read thorugh all of this and stand here still wondering what could have caused this, as I stated it happened to me as well. I had heard of troubles with cruise control taking over and causing this but in my situation it was not on. This happened after a 45 minute drive highway and then 'round town driving. Any way to look up any bulletins pertaining to this yet?

 

If a frog had wings it wouldn't bump his butt, there are variables to everything

Is the service dept always perfectly honest with you (how did that scratch get in my door--what scratch--oh that was already there).

They should've done a little more, especially with WOT, I had a gasser do the WOT thing as soon as I left the dealer, less than a mile away, the dealer called a wrecker for a 1 mile tow, I asked why, they replied, it was too much of a liability after being made aware of the problem.

 

I copied all of this and sent it to Cummins. Let's see what happens.

Bill

 

The 03 has a throttle cable if I'm not mistaken.

 

quit4e a few of the 04.5's have cables too, Mine does, gitchu's does as well, in fact we have two different cable setups. That makes for 3 different setups in one half model year...... sheesh, sounds like a nightmare........ no wonder it is hard to talk about a truck and understand what is going on, why do they do this? why not stick to one design for a given model???? Reminds me of wrenching on Fords.......... you aren't getting anywhere without a vin number.

 

Yes, it has a throttle cable, but that cable goes to the sensor (APPS) that gives direction to the ecm, which in turn tells the electronic injectors to stay open longer causing the engine to accelerate.

 

They'll probably use it as garbage pail liner.

 

We should send that dealer a thank you note, and flowers, for once a dealer doesn't just automatically pass the buck because you have a box on there.
Example: Hello mr. service writer dude, my hitch is loose, oops, warranty void caused by your box....

 

Have you tried Resetting your APPS? Not sure on 03 but for mine there is a tech sheet that tells how to reset (located on this site I think, maybe search).

Something like, disconnect BOTH batteries, Turn key to ON (don't start) to drain all things. Leave this way for at least 30 minutes. Turn key off, Connect both batteries back up, Turn key to ON positon and SLOWLY press go pedal to the floor and then back up. Turn key off. Then start as normal.

I'm not sure about the connection part?? Turn key back OFF before connecting or after connecting. I would think before.