Flat Spot

Hi,

My car has developed an annoying flat spot at very low revs, just as you let
the clutch off it hesitates & then picks up this is around 850-950 rpm.

This makes for jerky or even stalling at pull away in stop start traffic,
unless you rev it to 1000rpm then its ok, if it was just that I might live
with it but there is another side to it that is really annoying.

As your going along in traffic at about 40mph if you ease off the
accelerator a bit & then the traffic speeds up & you push the accelerator
(softly or hard) the car stumbles like a kangaroo stutter which is driving
me mad.
Now before I give money away I want to know this, could a re map of the ECU
fix this problem?

The reason I'm being so cautious is that I phoned up 2 separate BMW
Independents & ,without seeing the car, they told me it would need the
Dual-Mass Flywheel changing & it was not a flat spot!??!!

I then took the car to another Independent & he has told me its definitely
NOT the flywheel,he in fact laughed out loud when I told him what had been
said, it was in fact a fuelling problem, coupled with (excuse the Pun) there
is some wear in the Prop exaggerating the flat spot.

So I thought I'll have the Prop overhauled & have the ECU Re mapped , but
will they be able to stop this ??

THANKS IN ADVANCE FOR SOME KNOWLEDGEABLE IN PUT
JOE