My son's 1992 190e 2.6 has a slight idle issue once the car warms up.
anc
It seems more like a vacuum problem than a miss.

Coincidentally his trunk lock vacuum is not working.

Is it possible that this vacuum issue is causing the idle issue.

We can't seem to find any other vacuum leak... and the plugs and rotor have been replaced per normal maintenance

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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


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More likely the miss is causing the vacuum issue.
Cap, plugs, SP wires are the most common issues.

C locking system has it's own pump in the trunk & has no bearing in the engine operation.

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Retired Moderator

maybe we will try to change out the plugs first..... i think i put autolites in....

__________________
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]