hi everyone,

My mechanic who lives around 160 miles from me changed my air flow sensor. When i picked the car up, the car's idle was surging badly. He could not figure it out.
Anyway i drove home and booked it in with the main dealer. They ran a diagnostic and told me that the C/O was on 9.2% when it should be around 1% and that the hydrocarbons were at around 2500, when they should be at around 300.
My question is, has any damage been done driving that 160 miles, plus the 10 miles to the dealer?
The dealer told me that now they have adjusted everything, its running sweet...
Just need some reassurance from you guys!
Many thanks!

You have not hurt anything.

I wonder exactly what the dealer "adjusted?"

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2012 E350
2006 Callaway SC560

Don't worry about it.
IF that rich fuelmixture did not overheat & melt your catalytic converter ( does the car drive good now ), you'll be just fine.

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2007 C 230 Sport.

Also, how much they charged for adjusting it.

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" We have nothing to fear but the main stream media itself . . . ."- Adapted from Franklin D Roosevelt for the 21st century

OBK #55

1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
The Dee8gonator 1987 560SEC 196,000 miles - Sold
Orgasmatron - 2006 CLS500 90,000 miles
2002 C320 Wagon 122,000 miles
2016 AMG GTS 12,000 miles

hi guys, i have no cat, thankfully!
well here in the uk its $240 per hour! But i had no choice because i have pushed from pillar to post from various specialists and gotten nowhere!
I was just worried about carbonization etc!

Should i be ok then in terms of carbonization?
Thats all im concerned about!