Check alternator voltage should be above 14V at 1500 RPM. Bosch alternators are crap anymore, I bought a new WAI global alternator, it has strong output so far. Only time will tell if it holds up.
Pros: strong output
Cons: time will tell
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I installed a Bosch re-manufactured unit. Under $200. It has a 24 month warranty and roadside assistance included.
Pros: 24 month warranty
Aftermarket units from Bosch and other are about $300.
Pros: cheap price
Vehicle:
Porsche
The most expensive one at Rock is a Bosch for $186.79+ core.
Pros: Available at RockAuto
Cons: Core charge applies
Vehicle:
Infiniti QX60
Mine went out at like 105k swapped out a Bosch immediately but if not always go with denso.
Mileage: 168981 km
Well I definitely wouldn't have gone aftermarket but I understand you might have been in a pickle
https://www.fcpeuro.com/products/volvo-alternator-bosch-al157x?ads_cmpid=21619732995
As far as why it's not working at all, you need very good clean connections including good ground connections everywhere
Pros: good clean connections needed
Vehicle:
Volvo
Part number: AL157X
Bosch is a OE supplier to BMW - I would choose that over Valeo if it were a choice I needed to make.
Pros: OE supplier to BMW
Vehicle:
BMW
I installed a new BOSCH alternator in my MERCEDES-BENZ 190E 2.0 1991, and unlike the old one, this one has a **D+ port, a B+ port 1, and a B+ port 2.**
Pros: new alternator installed
Cons: cables are cramped
This is a known issue with non OEM and especially bosch alternators, the regulator gives a different signal to the power control unit.
Pros: known issue, regulator signal
Cons: different signal
If you were family or my customer I would get the Bosch.
Pros: good quality
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