Turbo rattle?

jason0341

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Mines a 2020. I’m going to fix the GoPro under the hood today to see if I can capture it.





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thetooke

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Mines a 2020. I’m going to fix the GoPro under the hood today to see if I can capture it.
If you can post the video, please do. It will be good to have as much material in this thread for JeepCares or Mopar to have. With yours being a 2020, it looks as though it wasn’t just a bad batch, but a faulty part to begin with and service department techs need to know what that sound actually means instead of “oh, that’s just normal turbo noise”.

What mileage were you at when you first started hearing this issue?
 
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jason0341

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If you can post the video, please do. It will be good to have as much material in this thread for JeepCares or Mopar to have. With yours being a 2020, it looks as though it wasn’t just a bad batch, but a faulty part to begin with and service department techs need to know what that sound actually means instead of “oh, that’s just normal turbo noise”.

What mileage were you at when you first started hearing this issue?
I have 9300 currently and noticed it probably around 7000 or so. Took it to my dealer for it and my transmission. They wrote off the turbo as normal and re-flashed my transmission but I’m still having clunking there when the trans temp is below 130°.
 
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laroo

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I didn't read this entire thread, so I apologize if this has been discussed. But about a year ago, we put premium in my wife's 2020 2.0. Immediately this sound was present, only around 1200 rpm. Next tank of gas was back to regular, and the sound went away. I don't think she's put premium in it since. Maybe I'll put some in as a test to see if the sound comes back. But since the sound went away, we stopped worrying about it. Maybe we should be worried.
 

Meela

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I didn't read this entire thread, so I apologize if this has been discussed. But about a year ago, we put premium in my wife's 2020 2.0. Immediately this sound was present, only around 1200 rpm. Next tank of gas was back to regular, and the sound went away. I don't think she's put premium in it since. Maybe I'll put some in as a test to see if the sound comes back. But since the sound went away, we stopped worrying about it. Maybe we should be worried.
The sound can be very faint. The difference between windows up or down can impact hearing it.....Sitting in the passenger seat vs drivers seat...add to that certain set of circumstances.... it could be getting missed... or maybe it was just a fluke for you?

for me... I had to be in the drivers seat...radio off....windows down.... I would have to be coasting towards my stop between 15-30 mph without applying the brakes. Once I pressed the brakes the sound would stop immediately.
 

laroo

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The sound can be very faint. The difference between windows up or down can impact hearing it.....Sitting in the passenger seat vs drivers seat...add to that certain set of circumstances.... it could be getting missed... or maybe it was just a fluke for you?

for me... I had to be in the drivers seat...radio off....windows down.... I would have to be coasting towards my stop between 15-30 mph without applying the brakes. Once I pressed the brakes the sound would stop immediately.
Interesting. Maybe it's still there, just quiet enough where we don't hear it. When we did hear it, it was very loud. I'll drive it this weekend to see if I notice anything. Thanks.
 

AtlanticOverland

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I didn't actually hear mine until I was driving with my doors off and the radio turned down. Then upon deceleration, under 30 mph, I heard it. I knew immediately something was wrong as it sounded like baseball cards in the spokes of a bike. When I took a mechanic from the dealership for a ride, he heard it too but said it is just what turbos do. When I replied that it didn't originally do that, that's when I started to make some headway.
 

Huehue80

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Interesting. Maybe it's still there, just quiet enough where we don't hear it. When we did hear it, it was very loud. I'll drive it this weekend to see if I notice anything. Thanks.
I always fill with premium gas. Never regular. The engine makes a ticking noise normally. The turbo clicking noise is completely different. Check out my video in this thread.
 

thetooke

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I didn't read this entire thread, so I apologize if this has been discussed. But about a year ago, we put premium in my wife's 2020 2.0. Immediately this sound was present, only around 1200 rpm. Next tank of gas was back to regular, and the sound went away. I don't think she's put premium in it since. Maybe I'll put some in as a test to see if the sound comes back. But since the sound went away, we stopped worrying about it. Maybe we should be worried.
What we are discussing is the actuator in the turbo charger. Under normal operation when you let your foot off of the accelerator the actuator opens the waste gate to let off the extra pressure. The issue that seems to be arising is that the actuator has faulted and when it opens up it is loose and the air pressure escaping causes it to move around presenting a “rattle” or “card in the spokes of a bicycle” sound.
This would not be affected by a change in fuel.
When you do try premium (which is what I fuel with) run your tank empty before fueling. I have heard that a mix may cause a slight knocking? Can anyone confirm that?
 

laroo

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What we are discussing is the actuator in the turbo charger. Under normal operation when you let your foot off of the accelerator the actuator opens the waste gate to let off the extra pressure. The issue that seems to be arising is that the actuator has faulted and when it opens up it is loose and the air pressure escaping causes it to move around presenting a “rattle” or “card in the spokes of a bicycle” sound.
This would not be affected by a change in fuel.
When you do try premium (which is what I fuel with) run your tank empty before fueling. I have heard that a mix may cause a slight knocking? Can anyone confirm that?
The sound we had was a rattle or card in the spokes sound, and it was very loud. When my wife told me about it, I blew it off as normal turbo related sounds. Then I drove the jeep and it was obviously not a normal sound. It could be heard windows up, in any gear at a certain rpm, around 1200 or so. I was ready to bring it in, but new tank of regular gas, and the sound immediately went away. The only reason we didn't bring it in right away is because she had her valve body replaced a couple of months prior, and the dealer experience was pretty bad with that one.

I'm not saying you're wrong about fuel not causing it, and my experience might have been coincidence. But we haven't heard the loud rattle in about a year.

If left unfixed, will this actuator issue cause long-term damage?
 

thetooke

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The sound we had was a rattle or card in the spokes sound, and it was very loud. When my wife told me about it, I blew it off as normal turbo related sounds. Then I drove the jeep and it was obviously not a normal sound. It could be heard windows up, in any gear at a certain rpm, around 1200 or so. I was ready to bring it in, but new tank of regular gas, and the sound immediately went away. The only reason we didn't bring it in right away is because she had her valve body replaced a couple of months prior, and the dealer experience was pretty bad with that one.

I'm not saying you're wrong about fuel not causing it, and my experience might have been coincidence. But we haven't heard the loud rattle in about a year.

If left unfixed, will this actuator issue cause long-term damage?
I found this in an online article.
“A sticking wastegate or faulty diaphragm can result in performance issues. A stuck open wastegate results in poor high-end performance, allowing too much exhaust pressure to bypass the turbine wheel. A stuck closed wastegate results in damaging overboost by providing maximum pressure at all times.”
 

thetooke

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To those who’ve had their turbo replaced: any idea if its a different part number?
This is the question I asked my JeepCares rep who is in contact with the service tech. I hope to have an answer when the service is being completed (parts are being delivered).
 

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