C43 stumbles at idle/ cuts off rarely?

tonysemi · 11-05-2009, 01:22 AM

My 98 C43 has cut off on me a few times in the last month.. usually at a stoplight with my foot on the brakes at idle, just kinda dies. But starts back up fine, and runs great normally. Any ideas? Is this as simple as idle adjustment ( currently 6-700 RPM ) or something else? Thanks for your help

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bzliteyear · 11-05-2009, 09:44 AM

I'm not mechanic and just guessing based on my prior experiences w/ E-class, but check the MAF(mass air flow?). It was about $350?

The wrong mechanic can end up fixing wrong things, and I think the idle is electronically adjusted by CPU so it's not like the cars of the 70's that you can tweak the RPM at idle.

Good luck.
PL

tonysemi · 11-05-2009, 10:32 AM

Thanks for your help

nathanphoenix · 11-07-2009, 01:24 PM

MAF sensor -- maybe, though I'd expect to see a more gradual degradation there.

Maybe check the fuel pump and fuel pump relay.

11-05-2009, 09:44 AM	#2
bzliteyear Super Member Join Date: Mar 2003 Location: SF Posts: 773 Drives: 2002 S55 AMG 1995 E320 Cab	I'm not mechanic and just guessing based on my prior experiences w/ E-class, but check the MAF(mass air flow?). It was about $350? The wrong mechanic can end up fixing wrong things, and I think the idle is electronically adjusted by CPU so it's not like the cars of the 70's that you can tweak the RPM at idle. Good luck. PL __________________ 2002 S55 silver/blk vent seats/distronic/parktronic 1995 E320 Cabriolet black opal/beige 2002 540i Sport steel blue metallic/grey 2006 R500 pewter/ash grey previously: '00 E320 wagon/'01 MB E55/'95 BMW 525i/'00 MB E320 Lorinser wagon/'89 Porsche Cab/'95 Lexus SC400/'00 BMW X5 4.4i/'99 MB C230K Sport/00 Porsche Boxster S/'93 MB 600SL/'90 Porsche 928/93 Porsche 968/'90 Infiniti Q45/90 Acura Integra/'88 Porsche 944T/'83 Porsche 944/'82 Toyota Supra

11-05-2009, 10:32 AM	#3
tonysemi Member Join Date: Oct 2009 Location: Newport News Posts: 91 Drives: 1998 C43 AMG, 95 Acura GSR , 97 Civic Hatch	Thanks for your help __________________ When a Honda just wont cut it..

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11-07-2009, 01:24 PM	#4
nathanphoenix Newbie Join Date: Nov 2009 Location: Madison, WI, USA Posts: 7 Drives: 1998 C43 White, 1998 C43 Black, 1983 300TD Red	MAF sensor -- maybe, though I'd expect to see a more gradual degradation there. Maybe check the fuel pump and fuel pump relay.

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