Hi all, thanks for such an awesome forum. Sorry this is long, I wanted to provide as much info as possible. I've been reading for a while, actually since before I bought my wife a CRD, so you folks get some of the credit and blame! We bought ours at the end of July as a demo with 3500 miles on it. At 5500 miles my wife called me freaking out because she was in heavy traffic, had stopped at a traffic light, and now it wouldn't move. I was nearby, so I flew over. She got out, I got in, she was right, it would idle very rough and barely move no matter how far you pushed the accelerator. I nursed to a parking lot and just parked it and left as we were in a hurry. Called roadside the next morning, met him there and tried to start it, it ran like nothing happened. I told the dealer the symptoms, they called back and asked if the check engine light had come on, it never did. They replaced the EGR valve and re-flashed the computer, everything fine, until... I was out of town, same thing happened to my wife again, she nursed it home and parked it. When I got home, it started right up, had a check engine light, drove normal till 1/2 to 2/3 throttle when it would lose power and eventually stall. If I shift to neutral while still coasting, turn the key off and the re-start, everything is back the way it was before the power loss and stall, seems to run normal unless pushed, and check engine light is on. I couldn't get any codes to display, Dropped it at the dealer, the next day they call me and say "there was an EVAP code from a loose gas cap, it's all set". I say "I'm not trying to hurt antone's feelings, but a loose gas cap will not cause loss of power and stalling". He says "you're right, mind if I drive it home with a scan tool on it", I say ok, he calls today and says everything is normal right now. Any advice is apreciated. My wife is losing confidence fast, please help!!!

Thanks for the reply. I did a visual inspection, nothing amiss. I tried toggling for codes and couldn't get any to display. I read another post where after a re-flash a couple of people could no longer toggle for codes. Wtih the overhead trip computer do codes still show up on the odometer, or do they show up on the display? Now that I have the vehicle back after no repairs except cleared codes, I realize it was in limp home mode. Does anyone know exactly what will cause limp home mode? One idiot at the dealer said only trans faults can cause it, but I can't believe anything they tell me. Thanks again, Bill

Sounds like it might have something to do with windows

Will it shift down to second gear no matter how fast you are going? HI OD straight to 2nd would be rough.

It is important to note, for everyone who experiences ANYTHING like this, that beyond the question of the cause of the problem, for safety's sake, the immediate "get me the hell out of traffic" response on the driver's part, is to turn the engine off, then restart. This resets the computer and will probably allow you at least temporary driveability long enough to get out of harm's way.

IMHO it is one thing for the programmers to set up a routine to make it very clear to the driver that something bad has happened and expert assistance in fixing the problem is in order, and quite another for the vehicle to suddenly become unresponsive in traffic because the fuel cap is loose, or some sensor has recorded an odd event.

What is worse is that when this happens, you are suddenly driving a sled, and a slow one at that, and cannot get it out of the dangerous behavior without switching off, a sometimes even more dangerous event.

I have no idea what the designers of modern vehicles were smoking when they thought that one up. I quite understand if an engine is seriously not capable of making much power, but if the "error" is temporary, or minor, the darn thing has no business collapsing completely on you, as they all seem to do nowadays.

As far as I know yes, this is why people are filing NHTSA reports on this. Imagine if you are doing 75-80 and it does this. Has the potential to cause a serious accident. Luckily mine has been great so far with 2700 miles on the clock....knocking on wood.