Here's a strange one.... I'm at my wit's end; I beginning to hate my car.
1998 E320 w/ 65,000 miles. CE light illuminated with error codes P0107 &
P0173. Started with a new gas cap. No help.
Went to an independent MB-German car mechanic who, over the course of a
couple of visits, gave it a carbon blaster induction treatment, 4 new O2
sensors and a MAF sensor. The acceleration was greatly improved; it's a
rocket. The idle is steady, no problems. The car appears to function
But typically 25 miles after erasing the codes, the CE light illuminates
with error codes P0170 & P0173. It appears to only illuminate at slow
speeds, particularly after a spell of highway driving.
The mechanic and his assistants were reassuring they could fix it. They
said there's a chance the O2 sensors were damaged by the CO discharge after
the carbon blaster treatment (the weather at the time was quite cold; it was
difficult to get the engine & catalytic system hot, he said). He's offered
to do what it takes free of charge.
That said, assuming there's no vacuum leak, what could be the source of the
error codes? Thanks in advance for your suggestions.
I'm facing deadline for the NJ Clean Air inspection so, again, thanks in
advance for your help....