I got a Bosch reman (listed as Denso)... so far so good.
90% is the alternator: get a reman Bosch. The "squeaky serpentine belt" is actually the bearings inside the alternator on their last legs.
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.
I installed a Bosch re-manufactured unit. Under $200. It has a 24 month warranty and roadside assistance included.
Aftermarket units from Bosch and other are about $300.
The most expensive one at Rock is a Bosch for $186.79+ core.
Bought a new bosch alternator and installed it.
I also noticed that the alternator looks like a remanufactured unit. I’ve been reading about how these PCMs really don’t like reman units that are not built perfectly to spec. It’s best practice to replace these with only motorcraft units.
Everything went well, or so we thought, as he turned on the car it started to slowly smoke. I assume that the ac compressor plug got shorted or was loosely plug bc it was the hardest thing to replug and the fact the ac isn’t blowing cold air anymore. We recharged the battery to 12.4-12.5 v. The alternator was only pulling 13.3-13.7 v with load and without load. Mind you this was a new OES Bosch alternator.
supplier willing to give me a Bosch remanufactured alternator (as good faith) to compare. after installation on Bosch, the result is worse than the Denso (output at alternator at 12.5V)
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