Cold starting/cold idle

[stevegto3]

Hi Guys

having a wierd issue. When i cold start the car the idle hunts wildly, goes from 1000k to 300rpm to virtually stall. I have to keep the revs up for about 3-4 mins and then it settles just at normal idle.

Just done Brands hatch and same thing after a run, car sits for a while then starting cold ish and it feels like it will stall. Rev it for a bit then it settles.

Any thoughts? Lamda sensor, fuel pump?

cheers
steve

[AMG Merc]

Have you checked that the rubber vacuum pipe/s under the throttle body, etc. aren't pushed on too far?

[stevegto3]

Someone mentioned a vac pipe - where is that one located?

[Rob_W]

It's the right angled connector on the left that you need to ensure isn't pushed fully on.

[stevegto3]

Thanks Rob

I assume if its pushed too far on the pipe on the controller hits the 90 degree bend, therefore reducing the airflow? How far should it be on?

Steve

[Rob_W]

You need to get yourself a copy of the build manual Steve. Here's the rest of the info I was too lazy to post earlier....


I have done the second fix after I had emissions problems for the MOT, see other thread

[stevegto3]

Hi Rob - thanks thats great. ive got the build manual but couldnt find that bit (i was looking on my phone)

I must admit my car does seem to run rich as the exhaust its a really sooty.

Ill check out the tube tomorrow and see how far its pushed on.

Thanks
Steve