Droning Noise

[Nekeflow]

Can anyone tell me what is the cause of a loud Droning Noise when my 2019 biturbo Ranger decelerates at low speed below 1500 revs or at 80-100km on highway while throttle is low. The noise gets louder as revs drop then disappears when the auto drops down a gear only to return when the revs in that gear drop below 1500. Sounds like a Mack Truck using Exhaust Brakes. Not a problem excelerating or above 110 km. Also not present with unloaded weight.

Sponsored

 

[jsphlynch]

Maybe a vibrating heat shield?

 

[db_tanker]

since you are describing it as a deceleration noise and not acceleration...at highway/near highway speed...and without a load...driveline sounds like the possible issue...possibly a u-joint, transmission mount or bushing, or even possibly something like a chunk of debris lodged somewhere not allowing a rubber isolation mount to do its job? Could also even be a tire wearing incorrectly or a poor manufacture with belt separation...

curious about this...I will want to follow the outcome seeing as its a 2.0 Diesel.

hope this helps!

 

[P. A. Schilke]

Can anyone tell me what is the cause of a loud Droning Noise when my 2019 biturbo Ranger decelerates at low speed below 1500 revs or at 80-100km on highway while throttle is low. The noise gets louder as revs drop then disappears when the auto drops down a gear only to return when the revs in that gear drop below 1500. Sounds like a Mack Truck using Exhaust Brakes. Not a problem excelerating or above 110 km. Also not present with unloaded weight.

Hi Ken,

I used to see this from time to time on customer units, but without experiencing not sure, but it sounds like a possible exhaust note period which can be very narrow banded and seems to be what you are stating with being rpm related.

Here is what I would do. If your vehicle is under warranty, take it to the dealer and have them do an exhaust neutralization. If out of warranty, you can do this yourself. Loosen the attachment at the turbo. Start the engine and rev it a coupe times then shut off. Now grab the exhaust tailpipe outlet and shake it agressively...let it relax and tighten up the previously loosened attaching fasteners to the turbo outlet. Drive and see if it made a difference. It does help in maybe 50% of the cases like this.

Hope this helps.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[Nekeflow]

Hi Ken,

I used to see this from time to time on customer units, but without experiencing not sure, but it sounds like a possible exhaust note period which can be very narrow banded and seems to be what you are stating with being rpm related.

Here is what I would do. If your vehicle is under warranty, take it to the dealer and have them do an exhaust neutralization. If out of warranty, you can do this yourself. Loosen the attachment at the turbo. Start the engine and rev it a coupe times then shut off. Now grab the exhaust tailpipe outlet and shake it agressively...let it relax and tighten up the previously loosened attaching fasteners to the turbo outlet. Drive and see if it made a difference. It does help in maybe 50% of the cases like this.

Hope this helps.

Best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

Thanks Phil, your advise sounds correct. It is only 1 year old and all the usual tyre or worn parts noises should not apply.
It only appears when i put a load on.
Just did 5000km loaded up with camping gear on board, the noise was depressing for the whole trip.
Had it on cruise at 100kph. No noise as it pulled up a hill, then noise came on when going down hill or on long flat road. Or when decelerating in low speed zones.
Did not appear to be present on cruise above 110kph, i guess because the engine was working harder. Sounded beautiful at 140kph.
No noise (or very faint) when unloaded.
It sounds like an air intake or exhaust sonic sound at certain revs usually decelerating. It disappears when i touch the accelerator.
I have complained previously to Ford at the first service, they just had blank face. Now due for next service, ill insist they hear it and suggest what you said.
Thanks
Ken

 

[Nekeflow]

since you are describing it as a deceleration noise and not acceleration...at highway/near highway speed...and without a load...driveline sounds like the possible issue...possibly a u-joint, transmission mount or bushing, or even possibly something like a chunk of debris lodged somewhere not allowing a rubber isolation mount to do its job? Could also even be a tire wearing incorrectly or a poor manufacture with belt separation...

curious about this...I will want to follow the outcome seeing as its a 2.0 Diesel.

hope this helps!

Thanks db, im pretty sure it is not what you said. What Phil said sounds closer. I'll see what Ford say when serviced soon.

 

[Nekeflow]

"Also not present with unloaded weight. "

what does this mean? the noise is when the truck is loaded? how heavy?

the rear differential gears would be my first place to look further. drain the oil and see if you have metal.
second thing i would look at would be drive-shafting, particularly the joints. being loaded, your angles may be exceeding the 4 degrees.
third, would be tire tread and pressures, just in case you're running some wild off road tread pattern.

and I'm also curious about the sunshine coast location? the only sunshine coast I know of is BC, my world geography isnt so sharp, and I really want to have that BiTurbo setup you got if thats the case. LOL

Thanks Ranger Pride, what Phil said sounds closer. I'll take what Phil said to Next Ford service.
The Sunshine Coast is in the best part of Australia.
Just about all 4x4's here are turbo diesels. Ranger models include a 5 cylinder turbo 6 speed. I have the 4 cylinder bi-turbo 10 speed, 157kw power and 500nm torque, sane as the Raptor.

 

[Fabweece]

Thanks Ranger Pride, what Phil said sounds closer. I'll take what Phil said to Next Ford service.
The Sunshine Coast is in the best part of Australia.
Just about all 4x4's here are turbo diesels. Ranger models include a 5 cylinder turbo 6 speed. I have the 4 cylinder bi-turbo 10 speed, 157kw power and 500nm torque, sane as the Raptor.

Hi I've been searching for days and finally landed on a thread which talks about the same issue I'm having.
I've pack for a trip from Melbourne to Brisbane and will eventually make it to the Sunny coast. It can get pretty annoying at times. But my fix was to drop a gear.

I was wondering if Ford managed to get around it? And fix the annoying noise. I managed to book in with Metro Ford in Brisbane on the 6th.
My biturbo does the droning noise on 10th gear at 110kph, 9th gear at 100. Basically it does it every time the car coasts at 1600-1700 rpm.

 

[P. A. Schilke]

Hi I've been searching for days and finally landed on a thread which talks about the same issue I'm having.
I've pack for a trip from Melbourne to Brisbane and will eventually make it to the Sunny coast. It can get pretty annoying at times. But my fix was to drop a gear.

I was wondering if Ford managed to get around it? And fix the annoying noise. I managed to book in with Metro Ford in Brisbane on the 6th.
My biturbo does the droning noise on 10th gear at 110kph, 9th gear at 100. Basically it does it every time the car coasts at 1600-1700 rpm.

Hi Fabrice,

You have a clasic vibratory response to engine excitation in the RPM ranger as it occurs at the engine rpm. These are somewhat easier to diagnose. First is to determine the order of the frequency. Is it first order engine...RPM. Third order based on firing frequency. Then from where does the sound seem to originate...Front, Mid Cab or rear.... I have no experience with ROW Ranger but from what you describe...it should be easy to isolate this responder to engine excitation. So first order engine is about 27 Hz and third order is around 80 Hz. The dealer's equipment should be able to determine this order....

Good Luck!
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retiree

 

[Fabweece]

Hi Fabrice,

You have a clasic vibratory response to engine excitation in the RPM ranger as it occurs at the engine rpm. These are somewhat easier to diagnose. First is to determine the order of the frequency. Is it first order engine...RPM. Third order based on firing frequency. Then from where does the sound seem to originate...Front, Mid Cab or rear.... I have no experience with ROW Ranger but from what you describe...it should be easy to isolate this responder to engine excitation. So first order engine is about 27 Hz and third order is around 80 Hz. The dealer's equipment should be able to determine this order....

Good Luck!
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retiree

Cheers Phil.
The noise comes from the front and seems to be first order. Hopefully the dealer came across it and knows how to correct it.

 

[hsmith21]

Thanks Phil, your advise sounds correct. It is only 1 year old and all the usual tyre or worn parts noises should not apply.
It only appears when i put a load on.
Just did 5000km loaded up with camping gear on board, the noise was depressing for the whole trip.
Had it on cruise at 100kph. No noise as it pulled up a hill, then noise came on when going down hill or on long flat road. Or when decelerating in low speed zones.
Did not appear to be present on cruise above 110kph, i guess because the engine was working harder. Sounded beautiful at 140kph.
No noise (or very faint) when unloaded.
It sounds like an air intake or exhaust sonic sound at certain revs usually decelerating. It disappears when i touch the accelerator.
I have complained previously to Ford at the first service, they just had blank face. Now due for next service, ill insist they hear it and suggest what you said.
Thanks
Ken

Any luck in your issue? I'm having similar issue with my 2019 US Ranger. When between 50 and 60 mph I get a droning noise when decelerating. The second I touch the gas it goes away. Im skeptical the dealer will do anything without me presenting possible solutions first

 

[jsphlynch]

My 2019 has this noise and is in the dealership for it and a couple other minor things. I just got an e-mail from the service advisor saying that they can readily reproduce the noise and have located it as coming from the rear differential. Fluid level and condition look great. No sign of anything being loose, and no excessive drag on the differential. In summary, "Yes, we do hear it but we have no red or even yellow flags being raised at this time. "

I'll keep an eye (or ear, as it may be) on it for now. I may change the fluid just to feel like I'm doing something.

 

[JeffT]

Can anyone tell me what is the cause of a loud Droning Noise when my 2019 biturbo Ranger decelerates at low speed below 1500 revs or at 80-100km on highway while throttle is low. The noise gets louder as revs drop then disappears when the auto drops down a gear only to return when the revs in that gear drop below 1500. Sounds like a Mack Truck using Exhaust Brakes. Not a problem excelerating or above 110 km. Also not present with unloaded weight.

Hi Ken,

did you ever get this issue sorted? I have the exact same problem with my 2020 FX4 bi turbo, but more noticeable at lower speeds, but this is probably due to normal road noise drowning it out at higher speeds. like you Only an issue when carrying weight. keen to hear how you got on as my dealership look at me and think I'm a nutter.

 

[Ran6erChris]

Exact same issue here on my 20.75 XLS sport (Australia model). My droning is 100% coming from the rear above 80kph when coasting and mainly downhill (disappears under acceleration). I had the common Ranger bunny hopping after 2" lift kit installed but shimmed 90% of that out (around 10kph only).

Initially I was thinking its a driveshaft into rear diff noise/issue but now thinking it could be the exhaust sound after ready the below forum re EGR Vacuum control but no sure if that relates to the 3.2 diesel.

https://www.ranger5g.com/forum/threads/bucking-surging-epidemic.14581/page-21


Anyone fix this issues yet?

Thanks

 

[bullard1255]

Has this ever been figured out?

Sponsored