ok guys, here's the story....I don't know what the heck is going on but i keep blowing alternators faster than i can get them. The battery was replaced and tested at the same time i put this new alternator in. One short trip and the alternator is overheating and whining like crazy....what could this be? im sick of dropping money on alternators.

Any suggestions?

Thanks

 

I replaced it and the wires went on the same spots just as they were before, I even cleaned the contacts....There are two wires with nuts on the top, then one snap on wire on the bottom and one terminal where there is no wire. Just like it was. Is this normal?

By the way, there is also something draining my battery while the truck is off, could this be a wire problem, maybe a short? blowing out the alternator and draining my power.....wouldnt the fuse protect it from that?

 

where are you buying these alternators?

to check what's draining your battery put a amp meter inline between your battery neg. terminal and the cable..start pulling fuses one by one and watch amp meter.

 

Bought them from a guy in Madoc ontario....he ships them in from the UK, i dont know from where. Regardless, its starting to get pretty annoying.

 

are they land rover OEM alternators?

 

I don`t know whether they are LR OEM or not.

 

Just checked the battery with a multimeter, and there are 12.5 volts for the battery (good right?) and when i take the negative lead off the battery and put it in line, it is drawing just over 2 volts with the vehicle off. Im going to start pulling fuses, ill let you know.

 

Ok, so that was easy....pulled the 100A alternator fuse and immediately went from 2V to 0.12V.....Where do I start to look for problems?

 

How much are you paying for those alternators, I would suspect they are cheap rebuilds.
As for your draw, yes that is excessive and needs to be tested quickly, how mechanical are you?

 

Im paying 300 CAD. Im fairly mechanical. More familiar with small engines and carburetors, but I can get by. Where and what do I start to look for?