transmission cluncking going into reverse

[Zac Harris]

hey guys i have a 2019 XLT with 5800 miles. i started noticing when shifting from park to reverse i hear a cluncking noise. only happens from park to reverse. it happens on flat ground or a incline. Any ideas?

 

[Kmdcolo]

Do you set the parking brake before you remove your foot from the brake?

I only have a thump if I don’t use the parking brake. I now use it 100% of the time.

 

[Zac Harris]

i dont use it. i havent tried it, but being on a flat surface it shouldnt be in a bind.

 

[Deadman]

If its when you first start the car in the morning, the engine is cold and is high idling sometimes. That hi idle going into reverse slams in much harder than after it idles down when warmed up.
just a thought.

 

[Zac Harris]

when my wife first told me i thought thats what it was. but when she got home last night it was still doing it

 

[dlcorbett]

Unfortunately, this is a known quirk of the ford sourced 10 sp. Its starting to show up in the explorer aviator cars as well

 

[Soliyou]

I have the clunk occasionally. If you wait 2 minutes after cold start or 30 seconds after warm start, the rpm will drop to 600 and you get noticeably lower clunk.

 

[AAOO]

Mine does it too. It’s on the list for the next service appt.

 

[Rancidlunchmeat]

Chipping in to say mine does it occasionally as well.

 

[Ronb1]

I’ve had mine in as well. Dealership said there was a code and system rebooted. That was about a month ago. Now my 360 camera/park assist and dash button not working....


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[Machete]

Clunking into any gear is not “normal “ which is what some dealers are going to tell you.

If they say that mention you’re calling FoMo.

 

[Wnomis]

I have taken mine to the dealer for this and they said it was “normal” it makes a funky clunk when going from park to reverse or drive to reverse. I have experimented at a stop sign and it just does it. The tranny has no issues with changing or noises in D 1-10 and I tow a camper around 4K#s and have never had a issue with it making noises shifting through the gears. I mentioned it again to the service advisor I spoke with, he said he hears a lot about in the F150s

 

[Gumby]

Mine clunks into Drive or Reverse, even on the slightest incline. I now use the Ebrake all the time and it eliminates that issue.

 

[jking05]

Mine will do that every once in awhile. Feels like it slams into reverse even on flat surface.

 

[st381183]

On a cold start my 2018 XLT when shifting to reverse, the tranny will slam into gear to the point that it will actually lurch backwards if my foot is not firmly planted on the brake. I got 16k miles and I just noticed this behavior about a month ago or so. Now, usually the rpms are still running at 1100 or so. I have been waiting for the truck to idle down before shifting, usually 30 seconds or so.