What else to change during starter replacement.

[kermmmit7]

Hi guys , my daily M3 has reach almost 180k miles. I am planing to change starter soon, because few times I couldn't start it right away. I already bought starter, 2 throttle body sensors, camshaft sensors . I also plan to clean throttle body and idle control, what else you recommend ? Thanks for all advices

[SQ13]

Water because you’ll be crying a lot. And maybe the ICV hoses if they’re cracking.

[FBloggs]

If you're going in from the top, you may need some intake manifold runner clamps.
otherwise, clean up the connections to the starter and coat them to retard corrosion.
I disconnect the small intake to sump pipe, at the sump before I remove the intake.

[OldRanger]

I disconnect the small intake to sump pipe, at the sump before I remove the intake.

Yes to that. Also...

FWIW - I cleaned my ICV and the intake manifold side of the throttle bodies recently and didn't notice any changes. My car still bumbles a bit at idle when cold (it's not severe, it's barely an issue). I'm second guessing my choice to clean the ICS instead of replacing it. It's expensive...that's why I was hopeful cleaning it would have some positive impact.

[kermmmit7]

Yes to that. Also...

FWIW - I cleaned my ICV and the intake manifold side of the throttle bodies recently and didn't notice any changes. My car still bumbles a bit at idle when cold (it's not severe, it's barely an issue). I'm second guessing my choice to clean the ICS instead of replacing it. It's expensive...that's why I was hopeful cleaning it would have some positive impact.

I had similar problem, then I changed all spark plugs and ignition coils and this issue disappeared.