Noise

[Dwoody]

Hi to all I’m new to the site. When I engage the exhaust brake it has started to sound different. To me it sounds like the turbo has opened a bit. All is working as it should. Any ideas?

 

[flan]

Hi to all I’m new to the site. When I engage the exhaust brake it has started to sound different. To me it sounds like the turbo has opened a bit. All is working as it should. Any ideas?

Any recent reflashes or services at the dealer done?

 

[Dwoody]

Just got a code for down stream Nox sensor. I’ll be changing that soon

 

[flan]

What years your truck?

 

[Dwoody]

2016 65000 miles

 

[Dwoody]

It sounds like the exhaust brake is kicking in but I hear this when at idle.

 

[flan]

Have you checked for exhaust leaks around the exhaust manifold, turbo and downpipe?

 

[Dwoody]

Just a general look but I’m going to do another Close look.

 

[Dwoody]

No exhaust leaks found

 

[flan]

just to confirm this is when you are driving/hauling and the brake comes on as you go to slow down?

 

[Dwoody]

In park not towing. At idle after pushing the exhaust brake button once. It sounds normal for the Cummins before the button is pushed.

 

[Dwoody]

Does the turbo actuator either work or not or can it not work properly?

 

[flan]

The actuator will usually set a code if it’s malfunctioning. Is this the first start of the day or anytime you push the button?

 

[Dwoody]

Any time this started about a month ago

 

[flan]

Any time this started about a month ago

That’s strange, I don’t have any other help for you, but if you figure it out I’d be interested of the cause.

 

[Dwoody]

I will Thanks

 

[Gus]

Have you hooked up a capable code reader like alfaobd? That will help you pull codes that a cheeper scanner will not read.


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