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Strange, long wooooo sound at steady speeds, ICE on


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224 replies to this topic

#41 OFFLINE   wb8nbs

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Posted 02 January 2015 - 02:17 PM

Cold weather is here again and the C-Max is making the noise often. Might be able to take a service tech for a ride soon.

Well, I took it in on the 30th Dec. and just as Edsel Murphy predicted it would not make the noise that day. Ford Tech put about 10 miles on the car and they never heard it. I did get my complaining documented and they said to bring it right in if it started again.









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#42 OFFLINE   drdiesel1

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Posted 02 January 2015 - 05:08 PM

I really wish the dealers had people that could at least perform the standard TSB search before wasting time on things. IDK if this is your problem, but this TSB should be researched before wasting time driving around with zero results. It's a simple practice, yet they seem to be oblivious to the obvious. It's not the full article, but it has the TSB info you'll need.

 

 

Good luck with your problem and I hope this helps.

Attached File  Untitled-1.jpg   135.58KB   11 downloads


Edited by drdiesel1, 02 January 2015 - 05:10 PM.

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#43 OFFLINE   wb8nbs

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Posted 07 January 2015 - 10:13 AM

Thanks for that. I have the whole TSB now, will wave it in the dealers face next time I'm over there.

 

 

I really wish the dealers had people that could at least perform the standard TSB search before wasting time on things. IDK if this is your problem, but this TSB should be researched before wasting time driving around with zero results. It's a simple practice, yet they seem to be oblivious to the obvious. It's not the full article, but it has the TSB info you'll need.

 

 

Good luck with your problem and I hope this helps.

attachicon.gifUntitled-1.jpg


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#44 OFFLINE   Jenie Benson

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Posted 07 January 2015 - 06:24 PM

My 2013, June build, is at the dealership for this right now.  I started having this issue at about 800 miles and I'm at 20,520 now.  Dealership had been unable to determine the problem until now because they couldn't hear the noise last winter and mine only does it at 15 degrees or below outdoor temp.  

 

We'll see if the TSB solves it, I'm not optimistic since there is a horrendous vibration that goes with the noise (which I think sounds like a very resonant WWWWWWAHHHHHHHH at about 2000 RPMS) and mine only happens below a certain outdoor temperature.  I am still of the camp that something is wrong in the drivetrain.  No amount of noise cancellation manipulation is gonna make that go away.   I guess we will see when they finish the TSB tomorrow.  

 

2 days I'm gonna have to miss work cause they were out of loaners at the dealership and the rental place they use is out of cars and apparently they do not have a backup - try explaining that one to your boss when your car is still under factory warranty and you can't get to work.


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#45 OFFLINE   wb8nbs

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Posted 08 January 2015 - 08:56 PM

An improperly wired microphone in a noise cancelling system could cause the sound system to go into oscillation and would explain why the noise seems to be coming for the foot well on the passenger side I think ther's a speaker there. Can we blame Microsoft?? Please???

 

I didn't even know it HAD a noise cancelling system. I think it's a good bet that it's the problem.  Wish there was a way to disable this "Feature", that would tell me for sure when it starts doing it again.

 

I had a call from the regional manager, they're working on it. Film at 11:00.



#46 OFFLINE   drdiesel1

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Posted 08 January 2015 - 11:44 PM

An improperly wired microphone in a noise cancelling system could cause the sound system to go into oscillation and would explain why the noise seems to be coming for the foot well on the passenger side I think ther's a speaker there. Can we blame Microsoft?? Please???

 

I didn't even know it HAD a noise cancelling system. I think it's a good bet that it's the problem.  Wish there was a way to disable this "Feature", that would tell me for sure when it starts doing it again.

 

I had a call from the regional manager, they're working on it. Film at 11:00.

What happens when you turn the audio system OFF ? Is the noise gone ?

Isn't the system only active with the audio system ON ?


Edited by drdiesel1, 08 January 2015 - 11:45 PM.


#47 OFFLINE   Jenie Benson

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Posted 09 January 2015 - 05:31 PM

Had my Energi in for 3 days this week and they performed the TSB related to the Noise Cancelling system to try to rid my car of the horrendous vibration accompanied by loud WWWAAHHHH noise.  Drove to work this morning and car did it again while entering the freeway and in traffic. Not fixed.  Not the problem (though yes, I could see how the system could amplify sounds if not configured properly, but that's clearly not the issue with my car). Spoke with a regional service manager today and he already received escalation of my problem before I even called him.  Car will have to go back for more investigation into the issue for unknown length of time. Dealership is attempting to line up a rental for me though the rental places are all sold out right now and the loaners are all borrowed out at the dealership. Regional service manager says he will have to get engineering involved in solving the issue since it's been an ongoing problem that is getting worse and it's a tricky one.  I'm keeping track of how many days it's been in for warranty stuff, cause sadly, we are inching towards threshold for lemon-law buy back and I'm starting to wish I'd bought something else.



#48 OFFLINE   Jenie Benson

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Posted 09 January 2015 - 05:32 PM

What happens when you turn the audio system OFF ? Is the noise gone ?

Isn't the system only active with the audio system ON ?

no, it's always on.  It uses the speakers from the audio system to do it's thing, but it's always on even if the audio isn't.



#49 OFFLINE   drdiesel1

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Posted 09 January 2015 - 06:00 PM

I wouldn't worry to much about it. It's not like it's something they can't sort out and

it isn't making the car unreliable or unsafe. Yes, it's annoying, but the car is a very

great set of wheels and you would be unhappy without it. I know, I was for 4 months

and had to buy another one. Last time I let that happen. Give them some time to fix

it and you'll be glad you did :wub2:


Edited by drdiesel1, 09 January 2015 - 06:00 PM.


#50 OFFLINE   wb8nbs

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Posted 22 January 2015 - 05:58 PM

I have a good recording of the noise! This is coming off a traffic light on Jan 22. Outside temp was 31F, the heater is off. Two people in the car.  Recorded on a Nook tablet.

 

In the file, noise at 0:15, and again at 1:05 briefly. RPM to get the noise going (I finally found the tachometer) is about 2400.

 

The file name is C-MaxWooo.mp3

 

Spectral display shows a 15 db peak at 159 Hz. That would be twice the engine firing rate at 2385 RPM which is consistant with the tach reading.

 

Hope This Helps.

Attached Files


Edited by wb8nbs, 22 January 2015 - 06:25 PM.

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#51 OFFLINE   scottwood2

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Posted 22 January 2015 - 07:48 PM

That sounds really bad in the audio file.  Does it really sound like that?  Can you tell where the sound is coming from?  The noise I hear is nothing that loud in my car but it does come in and out like you are talking about.  Resonant frequencies can be very damaging.



#52 OFFLINE   wb8nbs

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Posted 23 January 2015 - 11:11 AM

That sounds really bad in the audio file.  Does it really sound like that?  Can you tell where the sound is coming from?  The noise I hear is nothing that loud in my car but it does come in and out like you are talking about.  Resonant frequencies can be very damaging.

Yes, it does sound like that. It's easy to stop by just changing the throttle a bit but sometimes doing that is a problem in traffic.

 

The tablet was on my wife's lap about a foot from the right door speaker. From the left seat it sounds like the noise is coming from the right foot well and that would make the door speaker suspect.

 

Other experiments I have done:

Tapping the headliner above the drivers seat did not affect the noise

Tapping the headliner near the interior light console does stop the noise briefly

Opening the door does stop the noise but not sure because my wife freaked out when I did that.

Activating the voice command system has no effect on the noise.



#53 OFFLINE   ptjones

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Posted 23 January 2015 - 11:55 AM

What about rolling down windows? :)

 

Paul



#54 OFFLINE   wb8nbs

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Posted 23 January 2015 - 02:48 PM

What about rolling down windows? :)

 

Paul

I'll put that on the list of things to try.

Along with pulling the fuse that runs the noise canceller.


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#55 OFFLINE   Jenie Benson

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Posted 02 February 2015 - 04:19 PM

wb8nbs - my car makes that exact same noise as in your audio file and vibrates through the seats and steering wheel.  Mind if I share this file with my dealership? I took it to the dealership and got the service writer to ride along with me and his response as soon as it did it - "what the hell was that?!?!" and "make it do it again" (which I gladly did)  Dealership tried that TSB for active noise cancel crap - it did NOTHING (well strike that, it messed up my hands free so now when I use my phone via bluetooth it sound like I've fallen down a well and no one can understand me).  And mine only does it regularily when it's below about 15 degrees, so of course, once the dealership finshed the TSB, they didn't have time to test it that day cause it got warm and they couldn't test it the next day cause they apparently could not get me a loaner or a rental even though I had paid for an extended warranty to cover that and I needed to go to work as I had missed 2 days for this already, the very next morning I drove it and the car did that bad thing again.  I called and told the dealership and the service writer did not note it so the service manager thought it was fixed. And now it hasn't been cold enough for weeks and weeks.  I'm getting pretty mad about all this.  if they had gotten me a loaner or rental like they should have, they could have tested the car in the morning and it would have failed the test.

#56 OFFLINE   wb8nbs

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Posted 02 February 2015 - 06:19 PM

Wooo people:

 

Please turn on the tachometer display and report the engine RPM at which you hear the noise.

 

Someone posted these directions I think they are correct.

 

"Go to the Displays page on the left-hand mfd. Scroll up or down to get to MyView. Go right to customize. Again, up or down until the tach shows up."



#57 OFFLINE   FordService

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Posted 03 February 2015 - 12:30 PM

I'll put that on the list of things to try.

Along with pulling the fuse that runs the noise canceller.

Thanks for the update, wb8nbs.

 

Please continue to work with your customer service manager to reach a resolution. Let me know if you have any updates, and I’ll gladly add them to the case notes.

 

wb8nbs - my car makes that exact same noise as in your audio file and vibrates through the seats and steering wheel.  Mind if I share this file with my dealership? I took it to the dealership and got the service writer to ride along with me and his response as soon as it did it - "what the hell was that?!?!" and "make it do it again" (which I gladly did)...

Welcome to the community, Jenie Benson!  :) 

 

My name is Tricia, and I’m the U.S. Ford Customer Service Representative. Let me look into this further. What’s the current mileage on your C-MAX Hybrid?

 

Tricia 


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#58 OFFLINE   wb8nbs

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Posted 03 February 2015 - 07:04 PM

Fair Oaks Ford worked TSB 14-0151 today on my C-Max. They said they did not find any problem with the wiring and they caulked up the microphones. As Jenie Benson reported though, it did not fix the problem.  Heard the moaning three times on the way home.

 

I have verified the noise stops if you open the door, and it does seem to stop if you open a window. Nest test will be pulling F22 in the rear fuse panel.



#59 OFFLINE   Jenie Benson

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Posted 04 February 2015 - 01:46 PM

Thanks for the update, wb8nbs.

 

Please continue to work with your customer service manager to reach a resolution. Let me know if you have any updates, and I’ll gladly add them to the case notes.

 

Welcome to the community, Jenie Benson!  :) 

 

My name is Tricia, and I’m the U.S. Ford Customer Service Representative. Let me look into this further. What’s the current mileage on your C-MAX Hybrid?

 

Tricia 

I've got just over 20K on mine. Had this issue since last winter just shortly after it reached 850 miles when the weather got below 15 degrees for the first time. Had it in a number of times for a lot of unrelated stuff covered under warranty and regular maintenance and dealership never could get it to act up. Then spring came and it stopped being obvious.

 

As soon as it started doing it this winter (which was late cause winter has been really warm this year), I took it in and had a service writer ride along with me. Finally someone other than myself or my husband experienced it. Left the car with them that day for troubleshooting and missed work. They found that active noise cancelling TSB, but did zero work the first day.  Called to ask if I could leave it another day.  I asked for a rental and didn't get one, but wanted them to fix the car so I left it. They waited until the end of the next day to finish the TSB and it was too warm by that afternoon to test it. I needed to go to work the next day and they still could not provide a loaner or rental even though I have paid for an extended warranty which covers that so I had to take the car.  Very next morning - WAHHHHH and it was not fixed.  Called the service writer from the car on my way to work as it was doing it and told him it was not fixed.  He must not have noted it anywhere because Chris the regional guy out here was talking with the serivce manager at the dealership who thought my car was fixed.  Totally not fixed.

 

Now it's been way to warm and I'm going to get stuck waiting until next winter which is what I warned Chris about. This is NOT okay. This is an expensive car and I expect it not to have this kind of issue.  I have started calculating how many days it has been in the shop for all warranty related issues to begin purusing lemon law - which totally sucks, cause other than this, I love the car, but my husband is not about to let us keep a car with a warranty issue the dealership can't find or fix. 

 

FYI, mine is an Energi, so the other catch is that I can't have charged the car to experience this problem. I spent about a month not charging the car every day (and wasting tons of money in gas) hoping the weather would be cold enough to get it to act up enough to take it back to the dealer. Once the electric only charge is depleted and it runs like a regular hybrid, that's when there is a problem (this never happens in electric mode).



#60 OFFLINE   Jenie Benson

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Posted 04 February 2015 - 01:48 PM

Fair Oaks Ford worked TSB 14-0151 today on my C-Max. They said they did not find any problem with the wiring and they caulked up the microphones. As Jenie Benson reported though, it did not fix the problem.  Heard the moaning three times on the way home.

 

I have verified the noise stops if you open the door, and it does seem to stop if you open a window. Nest test will be pulling F22 in the rear fuse panel.

Let me know how this goes. I'm very curious since my hubby is convinced it's a mechanical issue - being a mechanic and all.  He didn't even know it had active noise cancelling until last month.








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