Just got my AE last week and hooked it up today.

First some background. Once the ambient temp got above 60-65 degrees this spring, my truck became virtually undriveable. It starts and idles just fine, but feels sluggish getting up to speed and once there, requires a feather light foot on the pedal to maintain driveability. Any added throttle pressure such as required to climb even the most gentle grade or to pass another vehicle causes an immediate loss of power, missing and entry into what I assume is limp-home mode. No additional codes get thrown during these events (I have a P0475 because I gutted the turbo last summer and P1211 due to running DPTuner econo mode program). If I pull over and let it sit (40-minutes or more) I can generally resume until this happens again.

I ran every test available and did some data logging based on other posts here. In no particular order, this is what I've found:

KOEO
- P0475
- P0605 Internal Control Module ROM Error
KOEO Buzz
- nothing
KOER Glow Plug
- P0683
KOER Cylinder Contribution
- P0269 Cylinder 3
- P0284 Cylinder 8
- P1211

I should note that I have never had the truck in for the new gray CPS. It is still running (I assume) an older CPS that was installed February '07.

Based on other posts, I attempted to log some data related to the ICP sensor. I added exhaust back pressure to the live data and the truck would barely run. Idled OK, but bucked and jerked when any pedal application, even in park. This surprised me because even though I left the plug EBPV connector unterminated when I gutted the turbo, I wouldn't expect the AE connection to result in poor running. But it did - once I remover the back pressure parameter from the live data, the driveability issue went away.

Same thing happened when I removed the ICP sensor connector while datalogging the pressure and duty cycle. Engine ran like crap. I disconnected the AE and it still ran like crap. After shutting it off and restarting without the AE connected, it ran just fine.

I don't think the engine ran any better (or worse) with the ICP sensor disconnected than it did connected. I did notice a slight lope at idle after goosing the pedal, but once it settled down, the idle was nice and smooth.

So, long post, lots of info. Anyone have any suggestions/comments?

 

Can you describe the limp home mode a bit more? No CEL when the truck does this? Does the truck run rough, shake, or just not seem to have any power? Does it do this in all settings on the chip? Does unplugging the chip change the symptoms any? (remember to remove the key from the ignition before pulling the chip).

How many miles on the engine oil and is it full? Fuel and air filter in good shape? Have you done the in tank mods?

 

What is your IPR at (such as duty cycle and what PSI are you seeing)?

 

I'm assuming what I'm experiencing is some sort of limp-home mode.

No CELs other than what are normally there - P1211 and P0475.

It runs rough, shakes and has no power or throttle response. If I'm lucky it will maintain maybe 30 MPH on the flat. It really won't climb even the gentlest of grades, and if I get stopped at an intersection, it takes 20-30 seconds to get thru after stopping. Normally I just pull over and shut it down when this occurs. Like I said, if I let it sit for awhile, I can generally get going again in a fairly normal manner, but it inevitably happens again 10-20 miles further down the road.

I've changed the oil twice this summer to no effect. The air filter, fuel filter and fuel pump have also been replaced in the last month or so. Full tank, half tank, almost empty, it happens all the time. I did do the in-tank mod a couple years ago.

I don't have a chip, I am one of the lucky few who purchased an Edge programmer from DPTuner with his programs on it. I have the econo and tow programs - this happens in both as well as the stock program.

In addition to the programmer, I have an MBRP exhaust (4"), 6637 mod, wicked wheel, gutted EBPV, 50-cent mod using Ford clips, and the forementioned in-tank mod. The HPOP was replaced last summer.

I should also say this has been creeping up on me. Two years ago it happened once. Didn't think too much of it at the time. Last summer it happened 3-4 times. This year, it's a constant battle. Truck runs like a champ all winter.

 

As for pressure and duty cycle, I logged 470-490 psi and 9.37-9.77% duty cycle at idle. Pedal position at idle was 12.94%

Foot to the floor, pedal position was no higher than 78%, 2000-2200 psi and 55-65% duty cycle.

Freeway cruise at 65 MPH showed 24-28% pedal position, 1200-1500 psi and 20-26% duty cycle.

These numbers are meaningless to me without a reference point

 

They have meaning and are now a reference point for you. I assume those were taken when the truck ran fine. If so, log them when the truck acts up. Since your problem appears temp related, you might want to also check your oil temp, ambient temp, and intake air temp #s to see if those sensors are not out of whack. When your truck is fully cold, compare your IAT to your EOT, they should read within 11* of each other. When engine is hot, make sure you do not see a silly # for oil temp, especially when it is acting up.

 

Checked the truck this morning, there was a 12.2 degree difference between IAT (54 degrees) and EOT (62.2 degrees). I'm going to assume that 12.2 is probably OK.

One thing I've noticed in my two days working with AE - if I hook it up with the engine off and then start the truck, it idles OK but will not drive. The engine romps with any application of the accel pedal. If I remove the AE connector the engine continues to romp. Only after shutting down and restarting does the engine run OK. If I connect AE after starting the engine, everything is OK, truck drives fine. Is this normal behavior with AE?

 

Doesn't sound normal to me in regards to the romps. I can start my truck with AE plugged in with no issues at all. If the skinny pedal makes it act up, try looking at it on AE to see what reading you're getting on the live data tab. I don't remember if they call it Accelerator Position or Throttle Position. You'll just have to read through the list and pick the one that sounds right.

 

Throttle is not it. There is no throttle on our trucks and it will read zero. You are outside the range of cold comparison and need to look at what EOT is when the engine is warm. Read my other post. They don't make up these numbers for nothing.

EDIT: I looked at your data and it seems you are mathematically challenged. 62.2 minus 54 equals 8.2. Boy, time to go to bed.

 

where do you have AE running on ? and where dose it get it power from ?

if you are using a lap top try running it off batts

when i use AE on my gmc pick up and if i plug in my power invertor to power up my lap top from the in cab at the power point or lighter the truck runs like crap and bucks and wont set ( mil ) light but if i run the lap top off the int batt or plug in to the wall

i have also read the ford truck will do some thing simmaler , to do with a grownd loop problem

 

The EOT was 66.2 when cold yesterday morning vs 54 for the IAT. My typo.

This morning the EOT was 70.25 vs 58 for IAT. Almost immediately after starting the truck, the EOT dropped to 69.35.

As for hot EOT, I've had the Edge set up to display it. I normally run 209-213 degrees. The onset of issues has never been preceeded by a spike or even significant rise in EOT. Only after the onset of issues does the EOT rise into the 220-225 range. Normally by that time I pull over and let the engine rest.

I logged some data this morning when I started the truck. With the AE hooked up, it idled fine as before but would not respond to the accel pedal. The romping I mentioned yesterday. I shut it off and noticed exhaust back pressure and ICP duty cycle continued to display their final readings when running. ICP pressure slowly dropped to 0 after a minute or so. The pressure makes sense, but not the EBP and ICP DC readings.

I then turned the key off, back on and restarted the truck without disconnecting the AE. It started and responded to the accel pedal just fine.

The laptop I'm using has always run on batteries when connected to the truck.

 

Thats why they say don't plug into an inverter in your truck. The ground loop it creates is what causes the funky operation.

 

@nd this. It says it a couple of times in the quick start pamphlet and in the owners manual. Unless your inverter has it's own external ground, so this could be a reason the truck is acting funny.

 

I know how that happens, I have made a few myself and needed to add a smiley there. Just tired I guess.

There are some inverter brands that do not have issues.

Are you running edge tunes? If so I recommend you remove/return to stock and start over driving the truck and logging.

Your EOT and IAT #s are still outside the test range even after you start it. What was the actual temp outside?

 

No worries. I assumed intent and resisted firing back with a smart-*** comment.

As for tunes, I bought the Edge from DPTuner loaded with his tunes - econo and tow. I'm one of the few who managed to take advantage of this wonderful opportunity during the brief window they were available.

Actually, sarcasm aside, this setup has worked fine for me, unlike many others who had problems.

But back to my issues, last week Mon-Tue were two bad days with the truck. On Wednesday, I reloaded the stock program and it ran fine the rest of the week. Over the weekend I put the 80HP econo program back in and continued to drive OK. Yesterday and today it struggled a little bit, but I've learned to recognize the onset of issues and by backing off the throttle (I know, I know, but I hate typing accelerator pedal) I can generally avoid the worst of it.

I actually logged some data with it acting up yesterday, but there was really nothing extraordinary to any of it. Of course, my experience with AE is somewhat limited, so I could easily be missing something. Plus, I may not be logging the correct data - ICP psi, ICP duty cycle, MAP, IAT, RPM, EBP, EOT, accelerator position.

As for ambient temps yesterday and today, I didn't check. I assumed after setting outside overnight with temps in the 50s, IAT would be approximately equal to ambient prior to starting the engine.