Mercedes-Benz Forum - View Single Post - 99 S420 Skips Heart Beat @ 70mph
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post #10 of (permalink) Old 03-21-2018, 10:19 AM Thread Starter
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Date registered: Nov 2013
Vehicle: '99 S420 113K
Location: Florida Sun Coast, Sarasota
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Update On Engine Hiccup/CEL

I went to start the vehicle to run down to the auto parts just a few minutes ago. The CEL immediately went off. Car ran the usual wonderful, and I drove to the auto parts. The very knowledgeable manager there said he couldn't check the codes since the CEL was off, and that he could not clear the codes even if he found a malfunction code. He says he cannot access a history of malfunctions. As it turns out Rico owns a '95 S600 in white/tan w/ 107K.

So I get home, and HUM had sent an email, informing me that it detected a code, P0100, MAF sensor with the CEL lamp. It didn't detect the CEL/code till I started the car today.

I think I better check my air filter. I have a funny feeling that it may be dirty, since I never checked it since purchase.

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"You are what you drive!" Big Al

There is perception, and then there is reality.

'99 W140 S420 113K, '94 W124 E320 124K (sold! Repurchased 10/3/16, sold 11/17)
'14 BMW X3 XDrive 40K,
'13 BMW X1 28K (Traded). '11 BMW 328i XDrive 19K(Traded)
'08 Subaru Outback Limited Wagon 56k (Traded)
'83 BMW 320is "Sport" (48k, sold! converted to EV!)
'87 190E W201 (sold!) '85 Audi 5000 (sold!)
'76 250 W114 (sold!) '72 280 W114 (sold!)
'67 200D W110 (bartered) '62 220 W111 (buried)
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