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Originally Posted by Jonchilds
Hey guys,
I've replaced the alternator with the mistubishi unit that coventry's had listed for my car.
Just one problem with the 'sensor' wires on the alternator (not the high current ones, the ones that need the new plastic connector.
Plugged in one way, I get a 4A drain from the battery with the car off and key out of the ignition.
The other way around, I get the battery light come up on the dash (even though we see 14.5V at the battery) and when the car is off, we get the oil and (i think) ABS lights stay 'half' lit on the dash.
I've left it unplugged at the moment, and everything is running fine, but I can't figure out what to do with these wires.
And has anyone had a brand new engine belt snap after 10 seconds of idling?
Mine did and it ripped off the crank pulse generator and caused quite a headache. Was a genuine belt from Ford too...
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Hi Jon
First of all, You HAVE to plug those wires in. They're the ones that power up the diode bank inside the alternator, without them connected your battery will NOT get charged at all. They can only go in one way for this to work properly and that is to keep the same color wire in the same position from the old plug to the new one. I don't remember exactly which one goes where off the top of my head but I can look it up for you if you like.
If you have another problem after the connector is plugged in you need to address this as a separate issue, from your description, it will either be a current draw or a poor ground issue.
As for the belt, there's a couple of things that can cause that to happen. If I were you I'll be spinning every single pulley by hand before putting another belt on, sometimes one of them locks up and causes this drama. Pay special attention to the a/c when the compressor is on. Also, look at the crank pulley to see if it looks out of alignment as the rubber in the middle dislodges causing the outer part (where the belt seats) to move forward. cheers
Marc
