Shudder / vibration while stopped in drive?

[MattR]

Mine does it and the dealer thinks they tracked it down to a “weight” or some sort of mount at the exhaust hangers by the crossmember at the transfer case

It’s going in April 3 as the parts took a month and every dealer around me is backlogged for months

It has gotten better as the weather has warmed up which is odd

 

[Dnpbakon]

Mine does it and the dealer thinks they tracked it down to a “weight” or some sort of mount at the exhaust hangers by the crossmember at the transfer case

It’s going in April 3 as the parts took a month and every dealer around me is backlogged for months

It has gotten better as the weather has warmed up which is odd

That’s a wild diagnosis by a dealer. Interested to see if this fixes it? If it does, that’s the only dealer I’ve ever heard have a fix for this

 

[MattR]

That’s a wild diagnosis by a dealer. Interested to see if this fixes it? If it does, that’s the only dealer I’ve ever heard have a fix for this

Who knows. I agree that it’s in the area they are working in so maybe that’s is. This is where I’m hearing it

 

[ekav555]

Who knows. I agree that it’s in the area they are working in so maybe that’s is. This is where I’m hearing it

It’s April 4th. Share the news

 

[engineer]

It sounds like you’re just feeling the vibration of the engine through the truck. I can feel some in my G2, not something I’m concerned with. But I also would not describe it as a shudder, so if maybe G3 is slightly different.

Assuming stable idle RPMs, what would cause this to happen sometimes and not other times?

It's about a 50/50 split for me and if it happens at the first stop light or stop sign it will continue at every stop for that drive. Other times it doesn't happen at my first stop and continues not happening.

Almost makes me think it's a software thing since a "restart" seems to fix it.

 

[MattR]

It’s April 4th. Share the news

Still at dealer. While they were fixing the rattle, they also had to fix the non functioning sunroof and all features on the passenger side view mirror not working. I've been without my truck going on three weeks now, for a total of seven weeks since 12/20

 

[FordTechOne]

Assuming stable idle RPMs, what would cause this to happen sometimes and not other times?

It's about a 50/50 split for me and if it happens at the first stop light or stop sign it will continue at every stop for that drive. Other times it doesn't happen at my first stop and continues not happening.

Almost makes me think it's a software thing since a "restart" seems to fix it.

From what others have said it seems to be RPM dependent, so the slight variation in idle speed between 600-700 may be the determining factor.

 

[engineer]

From what others have said it seems to be RPM dependent, so the slight variation in idle speed between 600-700 may be the determining factor.

Interesting. I'll try blipping the throttle next time it happens to see if it goes away.

I did try shifting it into neutral which doesn't help. Shifting to park actually does end up making it go away, but I didn't look at the RPM to see if/how that changed.

 

[SurfRaptor]

From what others have said it seems to be RPM dependent, so the slight variation in idle speed between 600-700 may be the determining factor.

This is definitely it. I've kept track of it for sure. I'd love to replace the plugs just to see if it smooths things out. Do you have a recommendation of a long one piece spark plug removal socket/tool that makes getting to the rear plugs simple without having to use some type of swivel? I'm a big fan of replacing plugs often since it's cheap and easy, and I'd like the proper tool even if I have to pay for Snap On. I've got a spare coil and plugs to keep inside the vehicle for down in Baja just in case it's needed. I just need the best tool for the job now.

 

[MattR]

Interesting. I'll try blipping the throttle next time it happens to see if it goes away.

I did try shifting it into neutral which doesn't help. Shifting to park actually does end up making it go away, but I didn't look at the RPM to see if/how that changed.

See, mine goes away in park but not in neutral too. Same symptoms.

Supposedly I will get it Monday or Tuesday and will post if it fixed it and if so, what they did