Alternator dying

[colb]

No sooner I put the tools away from replacing the exhaust downpipe bolts going to get them out again, alternator failing, not charging made it home with 11 volts. Alternator was a used one I put in whilst my original was rebuilt last year so the rebuilt unit is in the garage wondering if I should just change the diode pack or change the units over less work just changing the diode pack. Think I will change the units then have the duff one rebuilt as a spare. Use a local Alternator and Starter rebuilder who is very resonable and uses oem diode packs when servicing BMW Alternators.

 

[Oddly Godly]

On the bright side you have already replaced it once so it should be easier second time around, plus you have a refurbished replacement ready to go. Mine has done 110 thousand miles and is 24 years old so it's a miracle it still works

 

[colb]

Replaced unit today charging resumed will have failed unit rebuilt by my local man. Just noticed the O ring at bottom pipe on expansion tank is weeping so that's the next job, will order a BMW O ring and replace all the coolant whilst I am at it.

 

[t-tony]

One thing after another Col, and that's why someone looking to buy needs an enthusuasts car.

Tony.

 

[colb]

Post Mortum on the failed alternator, my man said the slip rings were toast, rebuilt and passed his testing. Its sitting on the shelf now in the Shed as a spare. As to the expansion/filler tank, found a pinhole in one of its sides it wasn't the O ring. New tank fitted new coolant and all back to normal.