Alternator Swap

Nacho · Post by **Nacho** » Sun Jul 22, 2007 9:05 am

Is it possible to swap the alternator from a non-mivec to a mivec? I do recall something mentioned a while ago about an extra pin but can't remember if it was the alternator. How necessary is this pin if that is the case?

mr-charisma · Post by **mr-charisma** » Sun Jul 22, 2007 1:32 pm

Nope, a Mivec one won't work in a non-mivec one .. the Mivec one has 4 pins, 2 of which are used for a relay back to the ECU (Alternator FR Terminal) telling it whats going on with the Mivec.

Nacho · Post by **Nacho** » Sun Jul 22, 2007 3:51 pm

Thanks dude. Love your work. Let's talk alternators...what are the symptoms and consequences of overcharging? - as in the voltage recharge rate is significantly higher than normal during operation.

mr-charisma · Post by **mr-charisma** » Sun Jul 22, 2007 5:03 pm

You suspect that yours is overcharging? It would likely fry the battery if it is, could be caused by faulty voltage regulator

khunjeng · Post by **khunjeng** » Sun Jul 22, 2007 6:50 pm

I doubt the alternators charge much different. I suspect it wants to know when it hits MIVEC to charge a little harder - no other reason I can see.

good to see what the rating of both are and understand where the voltage regulator sits in each case.

Nacho · Post by **Nacho** » Mon Jul 23, 2007 8:41 am

Yeah my first guess would be voltage regulator coz it sucks!

The alternator was reconditioned a couple of years ago coz this sort of thing started happening around that time when I first got an amp. Wish I knew more about audio stuff so I could have prevented it.

I suppose I still can.

The voltage goes a bit loopy after some 'spirited' driving so generally when the car has been hitting MIVEC more than it really should.

Would this cause the car to stall? For all I know this could be the stepper motor coz it kinda idles roughish but not that bad.