I have this same problem, let me know if you find a "cure" for this problem, it's been driving me up the wall.

 

I had the same problem, I would only hear it at the first traffic light when leaving the office. I was able to remedy by connecting the rubber gasket that is at the end of the plastic intake tube back through the fender.

 

My guess is...that when the intake tube is cold....the material stiffness is different which would change the resonant frequency of the tube? Could also have something to do with thermal expansion ....maybe? As far as the gasket material goes, I used some stuff I "borrowed" from the shop at work....it is actually foam with a sticky backing that is made for dampening purposes for on of our machine processes...........sorry I don't know where they get it from, but I would think that any durable insulating foam would work.

 

I've got some acoustic dampening material I think I might try. Since it has warmed up I haven't heard it or at least I'm just used to it by now. Would a cold air intake remedy this problem I'm guessing?

 

If this is the problem, then yes an aftermarket CAI would solve the problem. CAI's don't have a snorkel that goes through the fender...

 

Well, I got my truck back last night... Long story short, they updated the PCM and replaced a cam phaser... Unfortunately, I don't know if it solved the problems or not... Reason being is that as soon as I drove off the dealer's lot, I notice a slight stumble when accelerating. It did it 3 times last night. Then this morning, it did it really bad, and threw a CEL. Fortunately I was literally driving by the dealership when it happened. So I dropped it off again... They just called, said there's a problem with the #4 bank. They think it's something to do with the lobe, whatever that it. They said they're going to tear it down this morning, and see what needs to be ordered/replaced... The saga continues...

 

My advice would be to get away from Raceway, i've nerver had good dealing with them. I've had great luck with Fritt's ford in riverside. Real nice guys,and much bigger than raceway. Might be too late but just a suggestion. Good luck!

 

I know you're right... But man, I literally pass Raceway's driveway on my way to work... But yeah, if I can't get things fixed soon with Raceway, I'll have it towed to Fritts.

 

Just got another call from the dealer... They ordered 3 rocker arms. They'll have them installed Monday or Tuesday... Has anyone experienced this with their trucks? As I haven't read much about them being a problem with our trucks, I'm not real confident that they are the culprit... I still think it has something to do with the repairs they did the other day. Could they have somehow damaged the rocker arms when replacing a cam phaser???

 

QUINTIN, HELP!!! (yes that was a scream)

 

Quintin so let me get this right, its not a good idea to bring in the TSB numbers with problems? Reason I ask is because I will be bringing in the truck next month with a list and figured I'd substantiate my concerns with documented known potential problems. THats just a part of being a responsible owner, I wouldnt think anyone should/would take be offended by doing research. Who knows, people get offended over anything these days I just wouldnt think this would be one of them.

Also, I can relate with owners who bring in the truck near the warranty expiration period. Lets be real, its very inconvenient to be without a vehicle especially if its your primary vehicle and you have a long commute to work, like me. Also, with everything else going on in life sometimes it takes a back burner to more important things, guys married/with family here will know what Im talking about. I know me personally all within the last year, I've relocated twice, changed jobs once, bought a house, and about a million other things, so taking the truck in several times for vibration at idle, cam phasor tick, hard start, etc is difficult, especially when the dealer wont give you rental.

Its also frustrating to take the time and preparation to take the vehicle in for known issues and a tech comes back and cannot duplicate the problem or has no clue as to what you are talking about.

 

Another update... I stopped by the dealership on the way home from work. I was able to speak to the technician that's working on my truck. He basically said that the #4 bank threw a misfire code. That and along with the noise it was making, he's diagnosing it as a bad cam and rocker arms. He said he's probably seen a dozen or so of these situations. He's fairly confident that's the problem. But what has me a little concerned is that they haven't even opened up the engine yet. Can one code really tell them what's wrong inside the motor?? Anyway, I trying to keep my hopes up that it will be fixed by Tuesday, and that it'll be done correctly this time.

On a side note, he says that the new problem isn't related to the cam phaser that they replaced yesterday. But I find that a little hard to believe, that it's just coincidence. I mean they replaced the CAM phaser, and now the CAM is bad..??.. Seems to me that it could be related.

 

Why in the hell would they replace rocker arms? I've never had any rocker arm problems in these engines. Lifters, yes, but those usually cause a noise, not a running problem.

Edit - Okay, read the rest of the thread. They could have screwed the cam phaser installation up, or got the engine out of time somehow. Tough to tell without looking at it myself. I'm also wondering how they figure the camshaft is worn, bad, damaged, whatever.

 

I don't think it is.

Understand that TSBs are educated, streamlined guesses to fix a problem. They were (supposedly) tested and developed by engineers as an educated SWAG to try to fix the problem ASAP, at as little cost as possible to the Blue Oval. Half times, these crazy *** TSBs don't really work. And worst yet, they tend to give technicians who don't know any better tunnel vision, to where they'll blindly follow the TSB and forget about checking the little things - and it's the little things that kill.

Now, that said, you may get stonewalled by some dealers who play dumb like they've never heard of your concern. Showing them a copy of the bulletin may help in this instance.

 

Exactly! I thought that a code (such as misfire #4) simply means THAT, that there was a misfire. And that's where the training come in that a tech receives, to diagnose the cause of that problem. I don't know how he's concluding the cause to be camshaft & rocker arms without even seeing them... But it sure doesn't give me much confidence that it'll be fixed the 1st time around...

In fact, my prediction is that they'll call me on Tuesday (or whenever) and say that everything is fixed and ready to be picked up. I'll go pick up the truck, and within a few minutes of driving it, it will start to act up again. And then I'll have to take it back the next day, and start the whole routine over again.