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New challenger exhaust squeak

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5.8K views 19 replies 8 participants last post by  Mopar Frank  
#1 ·
Hello all! I'm a proud owner of a 2023 challenger r/t 5.7
Bought it with 8 miles on it about 4-5 months ago and now has about 2700 on it.
Love the car so far but around 900 miles I started hearing a loud squeak underneath the car when driving..I figured out what it was after I happened to use the remote start while standing next to the car - exhaust actuators. A little poking around online seen couple people with this issue but not much info on it.
I sprayed them down with wd40 and after driving for a few getting the actuators to engage the squeak went away and so far stayed away...
It's kind of ridiculous I have to spray anything with wd40 on a brand new car and who knows how long it will last.
Does anybody have any experience with this issue?
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#2 · (Edited)
Yes, your solution is this. There are springs in the actuators that will always squeak no matter what you do. The only solution is to keep the valves open all the time using this product here. This product essentially tricks your car into keeping the valves in the open position at all times. Very easy to install and works to eliminate the squeak. Another solution would be getting a cat-back exhaust with valve simulators.
 
#3 · (Edited)
Hello all! I'm a proud owner of a 2023 challenger r/t 5.7
Bought it with 8 miles on it about 4-5 months ago and now has about 2700 on it.
Love the car so far but around 900 miles I started hearing a loud squeak underneath the car when driving..I figured out what it was after I happened to use the remote start while standing next to the car - exhaust actuators. A little poking around online seen couple people with this issue but not much info on it.
I sprayed them down with wd40 and after driving for a few getting the actuators to engage the squeak went away and so far stayed away...
It's kind of ridiculous I have to spray anything with wd40 on a brand new car and who knows how long it will last.
Does anybody have any experience with this issue?
View attachment 1097307
My 2022 Challenger RT makes that same squeaky sound under the rear axle when I use the remote start, and I began to hear a diminished volume of the same squeaky sound while driving slowly. The post from GatorDave99 indicates it's just the exhaust valve actuators. I don't mind the squeak knowing that it's just from the active exhaust system, but I will spray graphite or white lithium grease to quiet the springs.
 
#4 ·
Mine is a 2018 and never noticed a squeak but it may be inevitable. If it's only once you start it cold , not sure it will bother me....but I havent heard it yet to know.
 
#6 ·
After I sprayed the actuators with wd40 squeak went away after little driving around. I ended up getting the inactive exhaust kit from z auto and I'm extremely happy I did.the exhaust sounds ALOT better and never have to worry about that loud squeaking.
 
#7 ·

Here's how to do the exhaust trick for free.
 
owns 2023 Dodge Challenger Scat Pack Wide Body
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#8 ·
Maybe i misunderstood the video but If you wire the springs open eventually it would set off the CEL..hence why I went with the kit.the kit puts the valves open 100% of the time but tells the computer the valves are still operating correctly.
 
#9 ·
The mod in the video only applies to Scat Packs, not R/Ts. But they do not throw a code

A Guy
 
#10 ·
Allright, I finally got to lubricate my squeaky active exhaust actuators under the car. My 2022 RT Plus only has 3,300 miles. I got to employ my two hydraulic lifts and two tripod stands so that I could intermittently and evenly lift both rear sides of the unibody frame. Some recommended spraying penetrating lithium grease, but I used Blaster industrial graphite dry lubricant. It's rated to withstand up to 850 F. It was pretty easy removing the 3 nuts holding each actuator cover plate. I sprayed the graphite and replaced the actuator spring inside the actuator. I was worried if I had replaced the spring as originally installed by the factory. When I started the car remotely, I no longer heard any squeaking! I did hear what sounded like the metal springs reseating themselves inside the actuator. After a test drive and another remote start, I did not hear any more spring clicking.
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#11 ·
Oh, no. I viewed a post with a photo that illustrated an active exhaust actuator's spring. I now realize that I may have reversed the orientation of the replaced springs when I closed up the actuators. Looks like I will take the car to the local Dodge dealership for an inspection and correct installation service.
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#13 ·
It isnt that expensive to delete the mids and add mini bullets. Mine is stock and i dont consider it to be quiet. I think its just right. Mine is still stock and its fine. Maybe a bit louder would be ok but i wouldnt want it a lot louder.
 
#14 ·
Well, wouldn't you know it. I made an appointment for today at 7:30 am for a Mopar service technician to correctly install the springs inside my active exhaust actuators. The service writer advises me that I will have to leave the car, because no one may get to the job until 24-48 hours later! Why give me an appointment when a mechanic is not readily available? I rescheduled the appointment to Dec 26, hoping that a mechanic can look at my car right away. I did not want my car being left outside over the weekend collecting bird droppings.
 
#15 ·
I viewed this video and might consider lifting up my Challenger RT again and reinstalling my active exhaust actuator springs. The video illustrated how the springs connect onto the active exhaust valves. Looks like I need to also disconnect the cable or remove fuse 36 in the trunk fuse box.
 
#16 ·
Allright, today is the day I took my Challenger RT back to the dealer's service department to properly install my active exhaust actuator springs. I am waiting to learn when a technician will work on my car. I had a service appointment visit set up for 8:30 am, but that is no guarantee that a technician will start work on the car. I am waiting for a phone call whether the work is finished, or does it have to stay over another day!
 
#17 ·
Well, well. The dealership contacted me today about my service request to reinstall the springs inside my active exhaust actuators. I had opened 2 weeks ago the actuators to spray industrial dry graphite to silence squeaky valves; however, I did not correctly position the springs back inside the exhaust valve actuators. I was told that the springs were broken, and new exhaust valve actuators were required. OEM Mopar part is $540 for each side. I could not find the spring sold separately from the actuator assembly itself. What could I say but approve the repair job with new parts.
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#18 ·
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#19 ·
Thank you for the hyperlinks! Unfortunately, I already gave approval for the dealership to order OEM replacement active exhaust actuators for my 2022 Challenger RT. At least I won't have to roll out my hydraulic jacks and tripods again under the car. I will wait and see if any squeaks come back. :)