I was just getting ready to ask that question cause I had my 2011 Ecoscrew do the hesitation while I was towing 2000lb in a rain storm. So I ordered an SCT Tuner and new plugs to see if this would help cure the problem. Everyone that has a tuner has not complained about this problem that I've read so far. Maybe this is the cure!!! FINGERS CROSSED!!!

 

Hey guys, I've got an '11 Eco with about 17k miles on it so far. It has run flawlessly until last weekend. I experienced the issue everyone is talking about on a 2.5hr trip and then was able to replicate the problem 2 or 3 times on the return trip. I had the cruise on, then attempted to accelerate rapidly followed by no power and then heavy(!) vibration. Conditions on the way down were upper 70's for temp and pretty high humidity. Conditions on the way back were low 70's and mostly rain and high humidity. I was using the cruise control between 70 and 75 MPH. Took it to the dealer today, we'll see what happens.

I'll be taking it on a 12 hour trip with my family this coming weekend so I'll be able to evaluate any changes. The forecast is calling for some rain so the conditions should be right. From what I understand the intercooler blockoff and computer recal don't seem to do much. It makes me a little nervous taking this thing on a long drive, but at least I can anticipate the issue and know what's going to potentially happen.

I hope Ford gets this thing straightened out ASAP. This is NOT what I signed up for when a bought a nearly $50k vehicle.

 

Dave W, from what I have been reading the problem seems to be related to the dew point and ambiant temp being within 4 degrees of each other. It would be interesting to note dew piont and temp if you run into this problem. Just my .02

 

Dealer couldn't replicate the condition (not surprising). He said they put a data logger on and to bring it back in after the I experience the condition again. Is this possible? Sounds like a lot of bull**** to me since I didn't see anything plugged into the OBD port or anything else. I can see this being a serious issue just trying to get the service manager to believe me.

 

It is probably plugged into the test port in the engine bay. I believe your HS/Can system is real time and operates at high speed. It is for finding out what is wrong in real driving time. I would go with it and help Ford. Your dealer probably is trained in this new diagnostic tool. It is an intergrated part of the twisty wire can/bus diagnostic system.

 

For anyone interested, here is some actual data collected during a loss of power event likely caused by condensation in the CAC.



This data was collected on my android phone using the Torque app and a bluetooth OBDII adapter. Fuel pressure and engine RPM are referenced to the right scale. All remaining data is referenced to the left.

 

Since the last TSB was performed, miss fire events are much smoother. I suspect Ford added additional measures to aggressively protect the engine during misfires. You can see the disconnect between accelerator and throttle position once the truck begins to detect a problem.

 

This is outstanding information to have. Just wish ford had this info it shows what is happening when the fuel cut is going on.

 

Can you dial into the boost PSI sender in the inlet right before the throttle body and the air temp sender there also when you see the drop in fuel psi during the boggggg. The sender info along with the MAPAIT2 data from the intake manifold may prove why the fuel system goes south.

 

I Googled this app and was surprised how cheap it is. 5 bucks for app and 25 for adapter on Amazon,

I have been using ultragauge but it don't have a record feature.

This also has a plug in for video with all the gauges. Might come in handy for those saying truck falls on it's face while passing.

I have a android tablet that I have't been using since buying a new laptop so now I have a good use for it.....

I will be ordering adapter now.....

Thanks