I went to Jim's website and built home-brew code reader to pull codes. It works great! Thanks for your time and effort to create and maintain your GREAT website Jim I have found lots of info I've been searching for on it.

There were many codes found. Mostly because I never cleared them after engine harness was replaced. All of them are cleared now and I will drive the car to see which codes will come back.

I was checking my lambda and it is still in 75-85% range. It gets to the point when you hold 2000rpms you can hear that the engine is slowing down a bit when readings reach 89% and when readings drop to 75% engine picks up rpms again. Can adaptations be a cause of it? I never got code#19 of on pin 19 though. Maybe I will order new eprom just in case. I don't think that my mechanic has that scanner. He has similar looking code reader he used to pull codes with but home-made blinking code reader pulled way more codes.

I have found my purge valve inoperative so I will replace it. Lambda was checked with purge hose plugged.

Fuel pressure regulator check did not reveal anything. I had it removed and cleaned. It looked good and held vacuum.

Air intake sensor was changing value when I blow into it. It reads around 1.7kohms at 70 degrees. Coolant temperature sensor is also in correct range.

Can someone tell me what signal get to pin 40 of Base module? I suspect Base module to be either rebuilt or tampered into. I opened it and found scratches on one diode and pencil marks on the other side.

Thank you for help, guys

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1999 ML430 Silver 135k ml
Smoked LED taillights, Alpine in-dash DVD player, 12" sub, Pioneer components, 2 amps, 4200k HIDs, ML55 headlights, 20" rims, mirror LED blinkers

SOLD. 1996 E320 145k ml. Burgundy

SOLD but miss it everyday 1992 500sel Black
Chime buzzer mod,Alpine CD/MP3 player with stock amp,Euro headlights,S600 grill,20" rims, BEST CAR EVER!

SOLD. 1990 300E White
187k ml,smoked tails,Euro headlights,17rims,Intake,12" sub in first aid kit,alarm/autostart,buzzer mod