mrizzo1963

mrizzo1963
2001 e 430 po170 & 175 HOW DO YOU SET MIXTURE ADAPTATION?


codes came after repl. maf ck for vac leak /fuel press ok/ i was told only dealer can re set ? light goes off /on days or a week but cant pass inspection even when light is off i drove it 2,000 mi i was told i well re set its self/ no good dont want to go to m/b i know they will wack me $$$$ can any one give me some feed back??

RichardM98

Where did you get the MAF you installed? It sounds like it may not be compatible.

mrizzo1963

got from dealer

RichardM98

Reason I asked is that some people have purchased MAF's online which are for VW or copies from Far East and couldn't get them to work. Must be another issue.

Good luck.

Tall Giraffe

Check around the air intake manifold. There is a tiny hose that comes from underneath (leading to a vacuum pump I think) in the front of the intake that becomes really brittle and crumbles. That is a pain in the butt to repair. Also the manifold is sealed like the breather covers, with RTV. Mine were leaking around that mileage, so I had to uninstall the air intake, separate it, decided to clean the inside (thats fun) and reseal. While I was there I replaced the manifold gaskets, throttle body seal, clean the throttle body, and egr seals. P0170 is gone. The issue was the air intake but while I was there, I took care of the rest.

Another symptom I had was an unsteady tachometer at speed. When I would let off the gas, the car would surge and drop.