My 2001 E320 has had the CEL on for approximately six months, and I have yet to notice any driveability problems. When I scanned for codes, the P0173, etc. codes appeared indicating a bad mass air flow meter. Are there any consequences from continued driving with this issue? I will probably replace the sensor in about 2K miles when the oil is changed (synthetic M1 5W40 every 5K).

Why would you take a chance, when you're going to replace it anyway?

I drove with a bad MAF on my ML for several months, and it gave me occasional starting and poor acceleration issues...ignoring it eventually destroying the fuel pump...while out of town on a holiday weekend. Not including towing 85 miles to the nearest MB dealership, replacing the pump and MAF added $1100 to vacation expenses...

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2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car

You know they are pretty easy to change, you can probably do it in oh 15 minutes.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I'm on it!!!

This might be of interest: http://www.aa1car.com/library/2003/cm70336.htm

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Don't believe everything you think
http://mbca.cartama.net

I recently had a MAF get 'contaminated'. The details are on my page; MENU#4a.

Although it's not your engine, the 'things' that happen are applicable.

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Regards . . . . JimF
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'94 S500 Cpe

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