Engine hesitation

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gabrielmurphylo
Posts: 9
Joined: Mon Apr 06, 2026

Engine hesitation

Post by gabrielmurphylo »

My 1991 300e 4matic is experiencing a problem with the m103 sputtering and then turning off when I accelerate. I have driven less than a mile from the house on three separate occasions. After the first five to ten minutes, the engine starts to sputter and shut off, even though the gearbox shifts smoothly. Just give me a few minutes with the engine off, and I can "limp" home. Over the weekend, I will clean the throttle body and replace the rubber boot that sits beneath it. I'm rooting for this to be useful.
leandro_hernandezj
Posts: 43
Joined: Mon Apr 06, 2026

Re: Engine hesitation

Post by leandro_hernandezj »

either use the search bar at the top of the page or go to Google and use the phrase
harper.castillocp
Posts: 31
Joined: Mon Apr 06, 2026

Re: Engine hesitation

Post by harper.castillocp »

Those three fuel filters sound similar. Since it starts out running well, I don't think it's an air leak.
gabrielmurphylo
Posts: 9
Joined: Mon Apr 06, 2026

Re: Engine hesitation

Post by gabrielmurphylo »

I failed to give the filters much consideration... You can easily swap them out. Sure, I can give that a go. The advice is greatly appreciated.
priyakk
Posts: 14
Joined: Mon Apr 06, 2026

Re: Engine hesitation

Post by priyakk »

With our W124, we experienced identical symptoms. As it turned out, the distributor had become wet. At the point where the cap attaches to the block, an o-ring ought to be present at its base. (The o-ring was missing from both of our W124s.) This should be useful.
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