Is this normal? Possibly dying alternator?

[gldgti]

Sorry guys another noob question

I've noticed whenever I start my car, the dash and headlights usual sit at half power until the car gets to about 40km and they then light up fully.

Is this normal for my VR or would it be safe to say something is wrong??

check your belt tension. sounds like the accessory belt is slipping/virating too much at low revs to charge properly... as you speed up (engine speed increases too) it tensions up enough to work.

check that there is reasonable tension on the belt when the car isnt running, and check that the belts not flapping around while at idle.

[V®6]

checked the belt and had a good look at idle. There is good tension there and I can't hear or see anything flapping around

[sydVR6]

Do you have a multi-metre you can use?

Might be worth seeing what your alternator is doing.

[V®6]

I'll have to borrow one but I'll give it a go on the weekend