I got my 320 Back on the road, Runs Beautifully, however at idle, there's what I'd call a Lope, The rpms drop, then recover etc I was told my fuel Tubes were filthy which I'll clean them out, but should I look at more? I was thinking about doing a tuneup now that it's working again etc. Open to suggestions

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

MAF

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Prost!

or....ETA

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

how would I go about checking them?

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

Or the rubber elbow (crank vent tube or other) that comes off of the bottom of the intake, ... crack and leak.

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Gone to the dark side

- Jeff

M104 engine has a non-OBD2 code system. You can make a code reader following some of the info on the forum here. MAF sensor usually goes around 130K or so and eventually throws a code, although you may get spurious other codes too.
Don't worry about your EGR tube, that just causes you to fail CA emissions, and doesn't give you bad idle.

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Prost!

well, if it makes any difference, the head was just off... and it idled fine before that..

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

How's the wiring harness? The insulation crumbles off on the W124 engine harness. Maybe you disturbed it.

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Prost!

I used MAF cleaner,and idle is fine.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

Wiring harness is ok. but it's getting replaced as its about the age to do it, But I'm thinking it's the MAF or something.. I dont think it's a wiring issue

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

crc maf cleaner is only about 6 bucks at the auto shops

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1989 300ce 129k
( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone)

1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

where's the MAF so I can check it?

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

I should describe this a little better, when I start the car, the car runs fine, then as it warms up, the RPMS drop to 3-500 then revive to 1,000 and stay there for awhile, then repeat the process. I'll grab a video of it etc soon

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

back to the top.

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

181K miles on the original wire harness must be some kinda record. I replaced the harness on my '95 E320 about 4 years ago when it had 64K miles on it. I had all sorts of idle and perforance problems that only got worse as I changed plugs, cleaned the MAF etc. I opened the old harnes and the wire insulation was a dry powder. I consider myself lucky that a short circuit didn't damage any electronics or start a fire.