d215yq
Senior Member
- Joined
- Mar 28, 2008
- Messages
- 2,664
- Reaction score
- 702
- Age
- 39
- Location
- Valencia, Spain
- Your Mercedes
- 1987 W124 300D 280k miles
Hey guys,
About 1 year and a half ago I had my only breakdown in my estate, when the MAF suddenly went. I had this replaced and ever since then the idle has been poor, like it idles a bit too low (it did this a bit before the new MAF but not as badly).
It idles typically at 600/650 unevenly and when you accelerate the revs instantly dip and there is a hesitation before they then increase as normal. Once above 1,000rpm the engine is smooth and powerful and no issues at all.
Occasionally when sat stopped in traffic the anti stall kicks in and the revs rise to 1200rpm. three times the car has actually stalled in a year and a half and 25k miles (twice just after filling with petrol!), so as i say this isn't a big problem. In the time since this has happened it's had new plugs, air filter, fuel filter, cleaned the butterfly valve, etc, to no affect.
I've got used to it but recently acquired a 220E as a spares car (as per here http://forums.mercedesclub.org.uk/showthread.php?t=116220 ), and this drives just so smoothly and idles perfectly. So the question is can anyone suggest to me bits to swap (that are easy to do) that might help mine become smoother...what about swapping the MAFs, or maybe the air intake pipes incase it has leaks? And is any of this risky...because at the moment i have two working cars and i don't want to jeopardise this by messing things up further!
Any thoughts appreciated! Thanks in advance!
About 1 year and a half ago I had my only breakdown in my estate, when the MAF suddenly went. I had this replaced and ever since then the idle has been poor, like it idles a bit too low (it did this a bit before the new MAF but not as badly).
It idles typically at 600/650 unevenly and when you accelerate the revs instantly dip and there is a hesitation before they then increase as normal. Once above 1,000rpm the engine is smooth and powerful and no issues at all.
Occasionally when sat stopped in traffic the anti stall kicks in and the revs rise to 1200rpm. three times the car has actually stalled in a year and a half and 25k miles (twice just after filling with petrol!), so as i say this isn't a big problem. In the time since this has happened it's had new plugs, air filter, fuel filter, cleaned the butterfly valve, etc, to no affect.
I've got used to it but recently acquired a 220E as a spares car (as per here http://forums.mercedesclub.org.uk/showthread.php?t=116220 ), and this drives just so smoothly and idles perfectly. So the question is can anyone suggest to me bits to swap (that are easy to do) that might help mine become smoother...what about swapping the MAFs, or maybe the air intake pipes incase it has leaks? And is any of this risky...because at the moment i have two working cars and i don't want to jeopardise this by messing things up further!
Any thoughts appreciated! Thanks in advance!