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|3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.|
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Originally Posted by markp
hey all! new to the forums! need a bit of help here...
i own a 93 318is and its been having lots of problems recently. the check engine light went on and while driving it gets really sluggish (especially uphill). the clock/mileage/temp all dims... and by the end of driving it 5 or so miles... this morning, the windows wouldnt roll back up...
i thought it was the alternator.. but i took it in to get checked, and the folks said it was fine who tested it.
any ideas what else it could be?
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Originally Posted by drz
Sounds like its a failing voltage regulator. The voltage regulator is integrated into the alternator. The alternator will look good on a bench test because the regulator's failure will not affect performance until after warming up (this is generally how things go). That is why you notice th problem about five minutes after starting the car.
If you don't already have a rather new alternator in your car, I recommend that you change out the whole thing. It will fix your problem. Plus, if the voltage regulator is dead, the rest of the ;aternator is probably on its way out anyway.
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