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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
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05 E55 AMG, gh STFT bank 2 (14-22) & bank 1 (4-8) at no load

Customer Question

05 E55 AMG, high STFT bank 2 (14-22) & bank 1 (4-8) at no load crusing, 2500-3000 RPM. Both B1 & B2 are normal at idle 0 +-.While in park, STFT climbs at 3000 RPM (no vac leak?), When I create a vac leak-nothing changes. After 25-35 miles of mixed driving, LTFT will reach 25 & throw code P2085. All new components = MAF, 550cc Bosch injectors, Bosch upstream O2 sensors, Magnaflow Hi-flow cats, coolant temp. sensor, SL 55 fuel pump, Bosch high flow fuel filter, intake gaskets…etc…
All coil packs are good, 52psi at fuel rail w/ASI 1:1 ratio adj. regulator (new diaphragm), 93 octane gas, clean “paper” air filters, etc..
I’m at a loss as to what’s causing the issue, I could use some fresh ideas….
Thanks, Steve
Submitted: 1 year ago.
Category: Mercedes
Expert:  Lou P. master tech replied 1 year ago.

Hello. I am very confident I can resolve this for you especially since you have a sds. So is p2085 the ONLY fault code that pops up stored and current in the ME-SFI module ?

Expert:  Lou P. master tech replied 1 year ago.

And I need you to use the sds to get the Mercedes fault code for me if you could. The sds is super easy to use. I can walk you through it or we can do a phone chat and FaceTime or Skype which seems to be the best for this issue since you are at your wits end. We can most likely fix this up in a hour I would think. Lou p

Customer: replied 1 year ago.
Okay, thanks Lou,
Unfortunately, here in the Dallas area, we are forecast for severe storms most of this week (including now).
Hopefully we can get together later this week (retired) for me to setup SDS. I use it fairly often but not as a diagnostic tool (as I should). Best I remember no pending/stored codes except for “P207B TCU code”.
Expert:  Lou P. master tech replied 1 year ago.

Ok no worries man. Just reply when you are ready and we can take it from there. :)

Customer: replied 1 year ago.
Hey Lou,
Looks like another slight delay…I booted up my Dell 630 to get ready for our SDS session, clicked on Xentry and a balloon popped up “License expired” & DAS = same… Ended up just ordering a new HDD (Hong Kong) w/expedited shipping - Estimated delivery: Wed, Mar. 16–Mon, Mar. 21. They will activate w/Skype (I guess) then I’ll let you know then.
MB Star SD Connect C4 Latest Software 12/2015 for Dell 630 Mercedes Benz DASJust curious, when I give you my Skype & phone contact info later, is this private or published?
Expert:  Lou P. master tech replied 1 year ago.

when we do the phone chat service i will send over a offer, once the offer is accepted there will be a personal info box so just dont put your info on this chat as a reply or it will be there for all of the world to see :)

Expert:  Lou P. master tech replied 1 year ago.

are you still needing my assistance?