About every 50 miles I get a "Check Engine" light. Torque pro gets P0170 and P0173. I have replaced the MAF with a Bosch and the O2 sensors. Hoses all look good. Ideas appreciated:

Merc scanner
Trouble Codes
P0170 $10
Fuel trim bank 1.
P0173 $10
Fuel trim bank 2.
Read Codes
P2017-1
MIL ON&Stored&Current
Self-adaptation of mixture formation for right bank of cylinders is at limit value (at idle speed). Enrichment over permissible limit (P0171)
P2086-1
MIL ON&Stored&Current
Self-adaptation of mixture formation for left bank of cylinders is at limit value (at idle speed).: Enrichment over permissible limit (P0174)
Fault Type Signal is too
large.
CARB MIL lamp ON
Fault code (decimal) 23
Fault frequency 3
Engine load 18(First)/23(La %
st)
Coolant temperature 86(First)/83(La °F
st)
Selfadaptation in idle speed 1.024(First)/1. ms
range, right bank of cylinders 075(Last)
Self-adaptation factor in partial 0.956(First)/0.
load operation, right cylinder 933(Last)
bank
Selfadaptation in idle speed 0.973(First)/1. ms
range, left bank of cylinders 024(Last)
Self-adaptation factor in partial 0.945(First)/0.
load operation, left cylinder 929(Last)
bank
Engine speed 675(First)/475( 1/min
Last)
Vehicle speed 12(First)/3(Last mph
Intake manifold pressure 383(First)/ hPa
469(Last)
Intake air temperature 50(First)/39(La °F
st)
Driving distance since fault 0(First)/0(Last miles
memory was er )
Time since engine start 6(First)/6(Last min )
Ignition angle -12.8(First)/-1 °KW
5.0(Last)
Idle speed detection ON(First)/ON(La
st)
Full load detection OFF(First)/OFF(
Last)
Deceleration recognition OFF(First)/OFF(
Last)
Secondary air injection pump OFF(First)/OFF(
Last)
Exhaust gas recirculation NO(First)/NO(La
st)
Fuel tank cap OPEN(First)/OPE
N(Last)
Underspeed exit YES(First)/YES(
Last)
Purge control OFF(First)/OFF(
Last)
Throttle valve angle 1.6(First)/1.9( °DK
Last)
Fuel tank level 39(First)/38(La l
st)
Lambda control, before TWC right 0.929(First)/0.
948(Last)
Lambda control, before TWC left 0.913(First)/0.
933(Last)
Status of Lambda control for Active(First)/A
right cylinder bank ctive(Last)
Status of Lambda control for left Active(First)/A
cylinder bank ctive(Last)
System Status
Ecu Ver Name Ecu Ver Value
MIL Status ON
Codes Found 2
Monitors N/A 1
Monitors OK 7
Monitors INC 2

 

What is your fuel pressure at the pressure port on the front passenger side rail?? Woody

 

Steady at 58 psi. Can't think of much else to try.

 

Dumb stupid idea, but how about a bottle of Techron just for ***** and grins ?