2013 Ecoboost 3.5L High Pitched Whistle on Acceleration
09-16-2018, 03:49 PM
#1
2013 Ecoboost 3.5L High Pitched Whistle on Acceleration
Have a 2013 Ecoboost 3.5L FX4 with 200k Km's currently. Recently i have started hearing a high pitched squeal whistle like noise when i accelerate.
its when its under load when you put your foot down from standing still or when pinning it to pass on the highway.
Light acceleration when already moving does not product this sound. It sounds like a vacuum leak but cannot find out where from as I cannot replicate when still. Only when driving under load. Even with brakes on cannot replicate.
If you put your foot right to the floor it makes the squeal and then shudders and misfires. Have searched forums and internet everywhere and cannot find the same problem.
find the video on youtube here:
help is greatly appreciated.
its when its under load when you put your foot down from standing still or when pinning it to pass on the highway.
Light acceleration when already moving does not product this sound. It sounds like a vacuum leak but cannot find out where from as I cannot replicate when still. Only when driving under load. Even with brakes on cannot replicate.
If you put your foot right to the floor it makes the squeal and then shudders and misfires. Have searched forums and internet everywhere and cannot find the same problem.
find the video on youtube here:
help is greatly appreciated.
09-16-2018, 11:10 PM
#2
Did you by any chance notice your lie-o-meter shows very good MPG when you get on the engine to make the sound? I have never seen this before.
Some things to check:
vacuum lines to turbo solenoids
proper wastegate function
proper blowoff valve function
I think these can get a leak in the diaphragm and make that sound.
Some things to check:
vacuum lines to turbo solenoids
proper wastegate function
proper blowoff valve function
I think these can get a leak in the diaphragm and make that sound.
09-17-2018, 02:11 AM
#4
If you suspect a vacuum line, check the ones on the piping up front. There are a few that connect to the charge air pipes. Folks have found cracks too, so inspect the ends closely.
09-17-2018, 04:05 PM
#6
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09-18-2018, 01:32 AM
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09-13-2019, 08:08 PM
#9
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Were you able to find out what the whistle is?
Have a 2013 Ecoboost 3.5L FX4 with 200k Km's currently. Recently i have started hearing a high pitched squeal whistle like noise when i accelerate.
its when its under load when you put your foot down from standing still or when pinning it to pass on the highway.
Light acceleration when already moving does not product this sound. It sounds like a vacuum leak but cannot find out where from as I cannot replicate when still. Only when driving under load. Even with brakes on cannot replicate.
If you put your foot right to the floor it makes the squeal and then shudders and misfires. Have searched forums and internet everywhere and cannot find the same problem.
find the video on youtube here:
https://youtu.be/LmNHyKJ4gow
help is greatly appreciated.
its when its under load when you put your foot down from standing still or when pinning it to pass on the highway.
Light acceleration when already moving does not product this sound. It sounds like a vacuum leak but cannot find out where from as I cannot replicate when still. Only when driving under load. Even with brakes on cannot replicate.
If you put your foot right to the floor it makes the squeal and then shudders and misfires. Have searched forums and internet everywhere and cannot find the same problem.
find the video on youtube here:
https://youtu.be/LmNHyKJ4gow
help is greatly appreciated.
I have a 2013 3.5 ecoboost and it has recently started making the exact same whistle under hard acceleration. I was hoping you had found out what the cause and fix is.
09-13-2019, 09:16 PM
#10
of engine compartment then goes down. The rubber gasket was loose and causing the whistle. I just put rubber hose clamps over to tighten it up. A common issue I found in research was the noise could also be from bad exhaust manifold gasket from warped manifolds
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