Technical Alternator only starts generating after revving

[koalar]

Are we sure there's even a problem

We need someone with the same same alternator and regulator to test theirs

According to the specs for the F00M144128 is got

Soft start 30%
Load response control

I wouldn't expect it to fire into life instantly

My 2010 panda does within 1/4 second of cranking

But a 9 year old Kia piccanto does not

Measured across the battery, there is a delay of around 5 seconds before it outputs any voltage

That a 100% working car that's never had a charging issue

 

[nigelvan]

Are we sure there's even a problem

We need someone with the same same alternator and regulator to test theirs

According to the specs for the F00M144128 is got

Soft start 30%
Load response control

I wouldn't expect it to fire into life instantly

My 2010 panda does within 1/4 second of cranking

But a 9 year old Kia piccanto does not

Measured across the battery, there is a delay of around 5 seconds before it outputs any voltage

That a 100% working car that's never had a charging issue

Well this will be easy to test: instead of waiting until the engine revs itself to about 1000rpm I can go right to revving it a bit myself and see if the alternator is indeed soft-starting or really needs those 1000 rpm.

 

[koalar]

Well this will be easy to test: instead of waiting until the engine revs itself to about 1000rpm I can go right to revving it a bit myself and see if the alternator is indeed soft-starting or really needs those 1000 rpm.

I thought of that

But then realised if the revs rise it's suppose to kick in if you raise the revs

So it's 50/50

If it doesn't kick we know it's supposed to be like that

But if it does kick in we are none the wiser

 

[vexorg]

Progress, 40 years ago alternators didn't charge at idle, lights would dim, they sort that so we have a healthy system, then we revert back to duff old alternators

 

[AnthonyH]

These soft start fuction alternators can't be saving much petrol per car, but over millions of cars it'll add up to less CO2 emissions into the atmosphere.