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Noise from ICE when getting up to speed; wasn't there before

noise

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14 replies to this topic

#1 OFFLINE   JohnnyO_71

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Posted 11 June 2018 - 11:48 AM

Hi there:

 

First time poster!

 

My C-max seems to have recently developed a strange noise ("whining") when I am going from a stop until it gets up to speed (i.e. until it gets to 2nd gear). Also makes the noise when idling if the ICE is on (if heater or A/C is on).

 

Here is a video demonstration. Any ideas or suggestions would be greatly appreciated. Thank you!

 









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#2 OFFLINE   Plus 3 Golfer

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Posted 11 June 2018 - 12:46 PM

Maybe electric coolant pump motor.  You are pointing at the outlet air pipe that is connected to the throttle body .  I believe the ICE coolant pump is maybe 6 inches below the throttle body.  There is also another coolant pump for the inverter coolant loop.  It's near the bottom of the radiator. You can see the two inverter coolant black lines  just below and to the right of where you are pointing in the video.  The inverter would be working hard (heating up when accelerating from start) to supply power to the electric traction motor. I don't know the control algorithm but perhaps this coolant pump is variable speed and reving high causing the noise when accelerating from stop.

 

If you can find a long pipe or screw driver.  Place one end on the various components in the area the sound is coming from and the other end to your ear.  You should be able to tell what component is making the noise.


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#3 OFFLINE   BIG ROCCO

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Posted 14 June 2018 - 08:32 PM

That sounds awful!



#4 OFFLINE   ptjones

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Posted 15 June 2018 - 09:07 AM

To me it seemed to very with ICE speed, for sure take it to the dealer, that isn't right.

 

Paul



#5 OFFLINE   Bill-N

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Posted 15 June 2018 - 10:42 AM

Sounds like the AC compressor to me.  They make an awful clatter.



#6 OFFLINE   JohnnyO_71

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Posted 17 June 2018 - 07:36 PM

Thank you everyone for the replies. I'm hoping to get her in this week to get looked at.

 

I don't think it's the AC compressor though; I never have it on!

 

And yes, it does vary with ICE speed. From a dead-stop until I hit 40 km/hr (sorry, I'm Canadian) the noise is present and then I'll let off the gas and it's ok. Or, when it shifts out of first (as much as you can tell it's shifting from 1st with a CVT).



#7 OFFLINE   ptjones

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Posted 18 June 2018 - 09:55 AM

Thank you everyone for the replies. I'm hoping to get her in this week to get looked at.

 

I don't think it's the AC compressor though; I never have it on!

 

And yes, it does vary with ICE speed. From a dead-stop until I hit 40 km/hr (sorry, I'm Canadian) the noise is present and then I'll let off the gas and it's ok. Or, when it shifts out of first (as much as you can tell it's shifting from 1st with a CVT).

Being a CVT it doesn't shift, it's all done with the Electric Motors. :)

 

Paul


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#8 OFFLINE   JohnnyO_71

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Posted 14 July 2018 - 12:43 PM

Hi there:

 

I thought I'd give you an update on what the deal is.

 

We have a family friend that works at a Ford dealership nearby that does work on our vehicles on the side (the dealership allows him to do these kind of cash jobs after-hours. They're nice!), so I called him and asked if he'd mind checking out my issue. I brought it by 3 weeks ago and left it with him. At the end of the day he called me and said: "Well, I checked it out with a stethoscope and I think it's something to do with the transmission. So, you can come get it, and make an appointment to have one of the tranny guys looks at it." I called to make an appointment the following morning and they told me to bring it in the following week. So I took it in last Wednesday and left it. At the end of the day, the service advisor called and said: "Yeah, definitely seems like something is up with it. You'll have to bring it back next week so I can work on it."  (!)

SO....I dropped it off this past Tuesday morning, first thing. I did not hear a peep until FINALLY he called me yesterday (Friday) at noon.

 

"Sorry, we were waiting on Ford to get back to us for approval because, well....this vehicle here, we need to take out the entire engine AND transmission. (!) So, you won't be getting it back until the end of next week at the earliest."

 

Son of a....

 

Now, I initially thought he meant I'll be getting a *new* engine and transmission, but now I'm guessing he means they just have to come out in order to be worked on. In either case, I am considering myself lucky that this happened when it did, considering that my warranty expires on JULY 27TH!

 

Anyway, there you go!



#9 OFFLINE   Bill-N

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Posted 15 July 2018 - 09:55 AM

Engine and transmission are installed/removed as a unit.  That's typical on the vast majority of cars these days (probably over the last 25 years or so).


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#10 OFFLINE   JohnnyO_71

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Posted 15 July 2018 - 10:06 AM

Engine and transmission are installed/removed as a unit.  That's typical on the vast majority of cars these days (probably over the last 25 years or so).

 

Sure, but what do you think: they're doing it to replace, or repair and put back?



#11 OFFLINE   Bill-N

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Posted 16 July 2018 - 10:01 AM

Sorry, I have no idea whether or not Ford will authorize replacement of the transmission.



#12 OFFLINE   ptjones

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Posted 16 July 2018 - 05:20 PM

Sure, but what do you think: they're doing it to replace, or repair and put back?

They were replacing all transmissions, but I'm not sure now, they maybe rebuilding now at the factory. :headscratch:

 

Paul



#13 OFFLINE   jmcgliss

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Posted 19 July 2018 - 11:11 PM

Unrelated to C-Max, I heard of a dealer that had stockpiled parts for replacing FOCUS dual-clutch units that were faulty.  Techs had perfected the job to a mere 2.5 hours. Practice makes perfect


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#14 OFFLINE   Noah Harbinger

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Posted 13 August 2018 - 10:53 PM

I'm having pretty much the exact same noise. Specifically, the noise is only present when the ICE is running, including at a dead stop - both of which rule out TSB 14-0176.

 

I should probably take it to be looked at... 



#15 OFFLINE   joshg678

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Posted 01 September 2018 - 04:15 PM

Likely they will replace the transmission with a new one if it wasn’t replaced already.






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