2007 Mercedes S550 Misfires/Runs Rough Fix

In this video I show a repair that I came to an assessment from prior diagnosis. The only thing left was to see if the engine computer would rectify the problem.

[@dtandfam8100]

Nice fix! Have had a few PCM's with burnt out GND drivers, to the O2's. Most of which have been subject to prior converter theft. Awesome how you were able to narrow it down and fix it! Gotta love the IM series tools! Thanks for sharing!

[@DTEAuto]

Thanks for the info! And thank you for watching

[@djosbun]

Nice walk-through, Sadel! 👍🏼

[@cardiaglexia995]

Perfect work 👍🏻.

[@nelsonmelo4746]

Saludos desde paraguay bendiciones hermano

[@prashanshan7125]

Nice Work..!

[@JoelAutomotiveInaction]

Great diag👏

[@mayowaodus6310]

Nice one sadel

[@briankotze57]

Me 9.7 has alot of issues. It fails with many different faults. From o2 to fuel pump cutting out to intermittent no start. I think it is Mercs most troublesome ecu with so many different failures. Good job as always.

[@DTEAuto]

Thanks for the info!

[@oscargmoney2024]

I have the same issue but mines says misfire 8 I already changed the spark plugs and coil packs . I’m looking into the injectors next and if that doesn’t work maybe My EcU/ Computer is bad !

[@eacherenkeka]

Excellent diagnosis Sadel! I was wandering if beside watching the close/open loop PID's you did other test to decide the ECM was the problem? Thank you for sharing brother!

[@DTEAuto]

I had already looked at it previously to the point where I narrowed down what to look at

[@jessevelez8415]

Kinda have the same issue but without the wires wrapped up. You think you can help

[@DTEAuto]

try replacing computer and see if it works

[@aymenmohamed1134]

👍👍

[@chasonmorgan7221]

Wya u at I need u