Check Engine Light - need advice
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Newbie
Joined: Mar 2007
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Check Engine Light - need advice
My CEL came on last week after I pulled my CLK out of storage. Car is MY 2000 with 33,000 mi. I had to replace the battery. CEL came on 2 days later. Reset did nothing. OBDII showed fuel trim malfunction on both banks (P0170/P0173). I changed the air filter and cleaned the MAF. This cleared the CEL and the car ran great. Filled it up this pm with Shell V-power (92 octane) and the light came back on within 1 mile. It was stumbling for the next 5-6 miles and then this leveled out. Gas cap is tight. I am looking for advice as to the next step. I ordered a new fuel filter and will change that out later this week. Do I need to change the O2 sensor, as well?? Any other thoughts?
Thanks.
Steve
Thanks.
Steve
MBWorld Fanatic!
Joined: May 2006
Posts: 1,486
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From: San Antonio, Tx
2000 CLK430
That is your MAF sensor going out. I also ran into the same problem and even bought a MAF on Ebay but it ended up being a bad one. So, after 2 months of misdiagnosing the problem thinking the Ebay maf was good it ended up being the ONLY problem I had. I bought a factory OEM one at the stealership for 470!!, and it actually fixed my problem completely. If I were you I would only buy the MAF from the dealership. Any other parts are ok to buy on EBay but the MAF was definitely not one of them.
Thread Starter
Newbie
Joined: Mar 2007
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I'll try the new MAF, then. Does anyone have experience buying from http://www.autohausaz.com ? They seem to have really good prices.
Steve
Steve
