New vibration

[Berky]

2022 ST. Just over 60k miles

I have a new deceleration vibration occurring. It’s felt throughout the entire cabin. I let off the gas coming to a stop and a wave of vibration happens. I’m not sure if it’s drivetrain or exhaust. When I shift into neutral it goes away. I just had a new rear driveshaft installed under warranty to remedy a pulse vibration while driving 45-55 mph. This is something else. I’m hoping for some insight before I bring this problem to the dealer once again. It seems like exhaust, but I’m not sure. It started when the weather got cold in Wisconsin, but not sure if that’s related to the issue. It certainly doesn’t seem normal.
Anyone have an issue like this?
Thanks

 

[Gadgtfreek]

Ford and these shakes (had it in my edge ST in the 40-50mph and my F150).

 

[EDWYER]

@Berky Some info in this thread. My guess it's the poorly designed stock exhaust.

https://www.explorerst.org/threads/...ation-issue-2022-ford-explorer-st.6709/page-2

 

[Berky]

Thanks for the input! I’ll read through and determine what aligns with my issue. It really feels like exhaust, but could be any random drivetrain issue as well. I’ve put 3k on this used explorer and can’t believe how wacky this transmission is. Dealer says it’s normal. If this is normal shame on Ford. It Shifts great, then does something strange. Sport mode downshifts are random and abrupt in the lower gears. A new rear driveshaft helped with some of the shakes. Now I have this vibration that’s simulates the engine dying when rolling to a stop. Strange. I’ll take a look at the flex pipes. Possibly get it in for the 60k maintenance and let the dealer dig in. I’ll update as well

 

[Berky]

Update I guess: I got my ST back today after it sat in the dealer’s queue for 4 days before a tech looked at it. Can’t really narrow down the problem, but it exists. “ Might just be the way these are” he said. He did drive it and supposedly had it on a lift to inspect the exhaust. Didn’t check the transmission fluid like I requested. $250 diagnostic fee and no clear solution. It’s going back in next week for a more experienced tech to diagnose for free after I pushed a bit.

-If it’s the exhaust, I’d like to know for sure if the downpipes and cats are ok. Then I would get a cat back set up at my expense. No way I would install another factory exhaust. Hopefully the next tech will take a better look. I’ve taken a look, but it’s hard for me to tell the condition of the downpipes or if the cats are shot.

Maybe a transmission clear and reset/re-learn?

This has been an irritating start to owning an ST.

I’ll update.

 

[EDWYER]

I hope it works out. If they don't find anything wrong with exhaust I'd change the fluids.