[n54phoenix]

Background: Car cruising along mid rpms 4th gear and i hear a sound from the engine bay. I get a few codes stop the car clear the codes and drive home to discover my serpentine belt shredded and there were remnants but nowhere near the full amount of belt. I take out what I can and replace the belt and go about driving and eventually get the codes below.
Fast forward to today and my car has been sitting and collecting a pool of oil from what I'm assuming is the crankshaft seal getting compromised by the broken belt. My worry is that if I go through the work of dropping the oil pan and taking off the valve cover to get all the bits of belt out it may still be too late to save the engine. It is still running strong but the transmission is completely failing to shift under load consistent with the codes below. I won't be driving it until I go through with ordering a new oil pan gasket and bolts, ofhg(it was leaking which caused the serp belt failure),a new crankshaft seal removal and install kit, and maybe a new tensioner pulley. Do you guys think if I go through all of this work the engine will return back to its pre belt failure state or is the damage already done ):
DME active codes -
2DED - DME: Power management, closed-circuit current violation.
2E97 - DME: Generator.
2F9E - DME: Oil level.
CD99 - Message (torque request, EGS, OxB5) incorrect, receiver DME, transmitter EGS /
HIM / SMG / DCT.
CD9D - Message (transmission data, OxBA) incorrect, receiver DME, transmitter EGS/HIM/ SMG/DCT.
CD9E - Message (transmission data 2, 0x1A2) incorrect, receiver DME, transmitter EGS/ SMG/DCT.
CDBO - Message error (display, transmission data, 0x1 D2), DME receiver, ETC / HIM / SMG /
DCT transmitter.

[Jklad]

I think if you took it apart the first time it shredded and cleaned it all out real good you might have had a chance. At this point it’s probobly toast.

[n54phoenix]

Jklad
I took off my valve cover today and there weren’t any pieces of belt in sight on or around the timing chain, also got the crank pulley off and I took pictures of the seal behind it and there were some pieces of belt and a little oil nothing major. I have everything to replace the crank seal and oil pan gasket on the way so I’ll be draining the oil pan to see what I find. Engine hasn’t been run since the day of initial belt failiure so I guess I’m a little confused what u mean by “if you took it apart the first time” but I’ll assume you meant that if I stopped the car as soon as it happened. Is there anything specific that’s making it seem like it’s too late to salvage or is that just usually the case when these things eat a belt.

Also, the trans codes that the car gave started later in the day as I drove with the belt off home. Any help with those would b greatly appreciated

[335i54n]

the main part of the belt gets stuck in the lower gears, it not possible to remove/inspect without dropping the pan.

anytime the belt gets sucked in, you always have to drop the pan to clean it out and Very important to check the oil pickup and clear it out

[n54phoenix]

Originally Posted by 335i54n

the main part of the belt gets stuck in the lower gears, it not possible to remove/inspect without dropping the pan.

anytime the belt gets sucked in, you always have to drop the pan to clean it out and Very important to check the oil pickup and clear it out

after doing this is there anything I should do to adress the codes?

[Jklad]

Originally Posted by n54phoenix

Jklad
I took off my valve cover today and there weren’t any pieces of belt in sight on or around the timing chain, also got the crank pulley off and I took pictures of the seal behind it and there were some pieces of belt and a little oil nothing major. I have everything to replace the crank seal and oil pan gasket on the way so I’ll be draining the oil pan to see what I find. Engine hasn’t been run since the day of initial belt failiure so I guess I’m a little confused what u mean by “if you took it apart the first time” but I’ll assume you meant that if I stopped the car as soon as it happened. Is there anything specific that’s making it seem like it’s too late to salvage or is that just usually the case when these things eat a belt.

Also, the trans codes that the car gave started later in the day as I drove with the belt off home. Any help with those would b greatly appreciated

My response was because Your original post sounded like your belt shredded 2 seperate times. If it only shredded once and you inmediately turned it off I’d have more faith in it being ok. See what you find when you take off the oil pan, it might be messy.

[Blaizon]

Originally Posted by 335i54n

the main part of the belt gets stuck in the lower gears, it not possible to remove/inspect without dropping the pan.

anytime the belt gets sucked in, you always have to drop the pan to clean it out and Very important to check the oil pickup and clear it out

This is great advice! I can speak to it personally as this happened to me. Shop "A" said the car was fine after cleaning the debris from the front cover area. Years went by and I was doing my yearly maintenance this year (oil pan leak), and the 2nd shop found all kinds of shit in the oil pan pickup. The oil pickup tube was blocked as well. It was a miracle my car maintained oil pressure all that time.

Fwiw, also pull the VC. Belt material was found by the lifters.