Good Morning all

My 1995 s 420 with 150k on the clock started to surge forward last week ,then cutting out ,then refusing to respond to the accelerator ,to stalling at traffic lights .

Once I got to the office I had it towed back the 20 miles I had just driven .

My mechanic is not a Merc mechanic but worked on it for me because I am a long standing customer of his shop and knew if I went to a Merc dealer I would have a hefty bill.

His diagnotic machine showed up "EGR VALVE"
Rather than replacing it ,he removed it completely and it drove fine for a day .

For the last few days it has gone form driving just fine ,to being a nightmare and acting just as badly as the morning it kept stalling ,jumping ,racing, cutting out etc ..as it did this morning .

I thought I got a smell of sulphur or something close to it today when it was doing its stop start and violent thrusting/stalling

I live in South Florida where the temp today is 72......sorrry

Advise and assistance will be greatly appreciated
Donal Dowling

have you cleaned your maf sensor? try a can of cleaner.
PS Also check your wire harness.

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

Hi There

I am a Phillistine when it comes to mechanics ...what exactly is a maf sensor and where is it

its attached to your air filters.Most have a screen to protect them from Bugs.They get dirty and cause all kinds of havoc.They also wear out.

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

I would suggest you find an independent Benz mechanic in your area and let him take a look. There should be plenty to choose from. There is a "Recommended Repair Shops" section on this forum for your convenience.
Anziani
'93 320CE 208K
'95 E420 127K