I had a car get flooded for 6 months and the Bosh alternator still worked perfectly for another 21 years. Would buy again
Fcp euro has an 100amp bosch one that works well. They have a lifetime warranty too.
Funny enough, I just did this dance today! Found a nearly new looking Bosch unit that someone had already kindly removed from the wrecker's car for me. Got it installed and tested exactly like yours though, so I'm happy.
imo take it back and grab a new Bosch from FCPEuro - https://www.fcpeuro.com/products/volvo-alternator-bosch-al157x
There is a Bosch unit that will fit with the same connectors, but the pulley is usually different. I went to a local auto electric shop and they asked about the current I wanted at what revs and they built a Bosch unit with the appropriate coils and fitted my old pulley. Plug and play, and it's been flawless for 10 years or more.
90 amp Bosch alternator I'm using for my 8V motor. I upgraded the +12V wires to 4AWG from the alternator to the starter and the starter to the battery. Make sure your grounds are good. Battery to frame and to motor. And alternator to motor.
Upon retrieving the information to answer you correctly I discovered that my original alternator was a Bosch 140Amp/14Volt. My new alternator is an A-Premium 140Amp/12Volt.
I've replaced the alternator Bosch 0124615028 with an identical part number one. Then I replaced the F00M-145-435(or 385 depending on where you look) regulator on it with a AS-PL ARE0075P. Both regulates to the same voltage, 14.2V.
I recently had two brand new Bosch remanufactured alternators fail. One after six weeks, and one was bad right out of the box.
This was a new genuine Volvo alternator I had Volvo put in, not a cheap or rebuilt part. Also, the battery is only about a year old. Could this really be a failing alternator or could something else be going on?
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