E46 M3 judders when cold is this normal

[craigy s]

Just wondering if any one elses e46 m3 smg judders when first started up and driven once the lights go out its normally ok any help

[Neil.D]

Its normal, here is one of many threads about it,

http://forums.m3cutters.co.uk/showthread.php?p=848...

[torres del paine]

Yes, it's normal.

The engine needs warming up; oil temp needs to be above 80 before it really loosens up (and the rev lights extinguished).

[MichaelC]

oh and expect the dreaded kangarooing too.

[M3J]

I'm so glad you asked that question. My M3 also does this in the morning on the way to work. Once the rev lights start to go out it's ok. Panic over. I will continue to enjoy

[0836whimper]

Does the Z4MC have this same throttle mapping, that supposedly causes this ? You don't hear of this.

[Euro Spec]

0836whimper said:

Does the Z4MC have this same throttle mapping, that supposedly causes this ? You don't hear of this.

I think it only happens with SMG equipped M3s.

[krallicious]

The E92's engine is the same. When it's cold, it is bh to drive smoothly.

All is forgiven when it warms up though

[Zod]

Euro Spec said:

0836whimper said:

Does the Z4MC have this same throttle mapping, that supposedly causes this ? You don't hear of this.

I think it only happens with SMG equipped M3s.

No, it can happen on manuals too, but dipping the clutch deals with it.

[shunt]

0836whimper said:

Does the Z4MC have this same throttle mapping, that supposedly causes this ? You don't hear of this.

Yes they do it too.

[Spartikus]

Never had it on either of my SMGs. The cold idle is smooth, but you can sense a 'lumpiness' in there. Nothing untoward considering the state of tune though.

[E38]

Could also be old/cheap fuel.

[lazzag]

My smg was ok at first then the -in bounce started( the kangerooing was so bad I thought the car was in a hop, skip & jump compatition), it does go after 3-400 yds( as long as I don't stop ) before all the lights go out, talking of lights no matter how far I travel I always have the 2 red lights and one yellow light on is this normal ?

Edited by lazzag on Sunday 11th October 00:51

[lazzag]

E38 said:

Could also be old/cheap fuel.

I use BP ultimate and still get it, just dreading the white stuff this winter