E30 Zone

Posted: **Mon Dec 22, 2008 12:12 am**

can anyone guide me in the right direction?
my m40 has a hard time ticking over when cold, and sometimes cuts out when pulling up to traffic lights.
i'm straining the alternater a bit with two batteries(1 on switchable charge), which pulls the revs down a touch.
but the rough cold start, and lumpy running after a short rest period is getting on my nerves now...
so if anyone can help with some info, it would be appreciated.
dan.

Posted: **Mon Dec 22, 2008 2:44 am**

not 100% sure but lumpy running might be because of ICV - remove it and give it a good clean with carburator cleaner
I'm sure that a full list of things to be checked will be posted in...seconds

Posted: **Mon Dec 22, 2008 3:23 pm**

idle,control valve...or the pipe that goes to the air flow meter,,could be perished/split..
i have a few i,c,v's off m40'si'll post you two for £15 if needed...this will sort it out..

Posted: **Tue Dec 23, 2008 12:14 am**

i'll give it a blast with some carb cleaner.
any ideas on the cold start problem??

Posted: **Tue Dec 23, 2008 1:16 am**

thats what it is.it sorts ya revs out when cold till warm.icv.
they do fail and cost about £100 from bmw

Posted: **Tue Dec 23, 2008 1:20 am**

ok, my bad...is it not worth getting a new one? least it'l last a while...
is it causing the cutting out when i slow down as well?

Posted: **Tue Dec 23, 2008 1:22 am**

streetbassincuk wrote:ok, my bad...is it not worth getting a new one? least it'l last a while...

up to you m8,,i have 5 of these

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