Dunvale
Senior Member
- Joined
- Jul 21, 2009
- Messages
- 49
- Reaction score
- 0
- Your Mercedes
- 01 ML 270cdi (w163), 94 E200 (w124)
Hi all,
The problems with my 1994 W124 E200 are coming hard and fast these past few months!
The latest is that she tends to be hard to start along with lumpy idling when hot.
Its a confusing one, here are the symptoms.
A few weeks ago It was very hard to start one morning. It was just turning over. Took me a few goes before it started and then it died when I put it into drive. Got it going eventually and it was fine. That was kind of a one off.
I find it will start ok in the morning now if I wait for the buzzing of the fuel pump to stop.
Idles fine when cold strangely enough. Its when it gets hot that the problems start.
1. When driving, its fine.
2. After regular driving on the motorway, it will idle erratically. By this I mean the engine will rev and then drop in revs rhythmically between 500-1000rpm. I think the phrase is hunting or surging? It could be just sitting there idling away and all of a sudden it will shoot up to 1200rpm.
3. If I leave my foot off the throttle and let it coast along in drive it will tend to lurch forward in rythm with the dodgy idling,so I look like a learner driver who can't find the right gear! This tends to be a problem with reverse because when I'm backing into a space she tends to rev up of her own accord so I have to be quick on the brake to avoid slamming into something!
4. Most annoying of all is when the engine is hot and if I turn it off its hard to start again. The longer its left to cool the easier it will start.
I'm not sure where to start on this one, Any ideas?
The problems with my 1994 W124 E200 are coming hard and fast these past few months!
The latest is that she tends to be hard to start along with lumpy idling when hot.
Its a confusing one, here are the symptoms.
A few weeks ago It was very hard to start one morning. It was just turning over. Took me a few goes before it started and then it died when I put it into drive. Got it going eventually and it was fine. That was kind of a one off.
I find it will start ok in the morning now if I wait for the buzzing of the fuel pump to stop.
Idles fine when cold strangely enough. Its when it gets hot that the problems start.
1. When driving, its fine.
2. After regular driving on the motorway, it will idle erratically. By this I mean the engine will rev and then drop in revs rhythmically between 500-1000rpm. I think the phrase is hunting or surging? It could be just sitting there idling away and all of a sudden it will shoot up to 1200rpm.
3. If I leave my foot off the throttle and let it coast along in drive it will tend to lurch forward in rythm with the dodgy idling,so I look like a learner driver who can't find the right gear! This tends to be a problem with reverse because when I'm backing into a space she tends to rev up of her own accord so I have to be quick on the brake to avoid slamming into something!
4. Most annoying of all is when the engine is hot and if I turn it off its hard to start again. The longer its left to cool the easier it will start.
I'm not sure where to start on this one, Any ideas?
