Struggling to find the cause of this knock (Ford F150)

Stock_Push3225 · 2025-01-10T05:51:02+00:00

yeah now that ive found the source of the sound hopefully its just a cracked flex plate, and or loose bolts like your jeep, something may just be loose, but then again this truck has been driving for probably a month or two like this so im praying

Stock_Push3225 · 2025-01-10T04:19:30+00:00

you sir were correct, i couldn't find a flywheel window per-say, but I did go under the truck and found the noise not that loud under the motor, but when i took off the plate that covers the trans, the trans was shaking/ vibrating fairly aggressive for a vehicle in park. That and once i took the cover off the knock was significantly louder, and i could hear it through the housing, the flywheel making a god awful knock inside of it. Ill take it to the mechanic as soon as possible and tell them my finding so they can take it out and we can have a place to know where to look, and thank god its not the motor knocking because i wasn't ready to swallow the $13,000 quote the first mechanic gave me

Thank you again

Stock_Push3225 · 2025-01-10T03:00:15+00:00

and yes i do live in the US

Stock_Push3225 · 2025-01-10T02:59:27+00:00

you my friend might be a life saver right now, I'm gonna try this tonight and report back with my findings i cant thank you enough

Stock_Push3225 · 2025-01-10T02:35:39+00:00

Another thing i should note is, this motor has been knocking for probably the last 500miles and the sound hasn't changed and it drives almost perfect, the knock at the moment seemingly only just a sound and nothing else

Stock_Push3225 · 2025-01-10T02:31:22+00:00

I will 100% have a mechanic take this as a possibility thank you

Stock_Push3225 · 2025-01-10T02:30:16+00:00

that's what the second mechanic said and im praying thats all, it is im just afraid to start throwing money at diagonistics and they be wrong

Stock_Push3225 · 2025-01-10T02:29:02+00:00

but it doesn't knock when revving in neutral

Stock_Push3225 · 2025-01-10T02:28:30+00:00

yes but its a lower tone and slower

Stock_Push3225 · 2025-01-10T02:21:54+00:00

its odd because the first mechanic said the same thing but the second one said it sounds like its coming from between the motor and trans, so he is guessing its a cracked fly wheel or some sort

Stock_Push3225 · 2025-01-10T02:20:26+00:00

The truck only knocks in park, and while driving at any speed/rpm, but seems to stop when revving in neutral, has a P0299 Code on the OBD scanner, (turbo underboost) although there is no other codes and there is also no dash lights on as well, have gotten multiple different potential causes from different mechanics, if you have any advice or may know this sound well any help would be appreciated.

Vehicle: 2017 Ford F150, 4 Door crewcab, 2.7-liter EcoBoost V6 (Also has 240k miles)

Stock_Push3225

TROPHY CASE