Alternator OEM Volvo or OEM Volkswagen

Drove it for a day and the alternator crapped out. Installed a new one asap.

The alternator was dead (as expected), and was replaced with a used one that I sourced locally from junkyard.

The high rev voltage must be over 14 volts, so if not, then its the alternator. But make sure all connections clean and greased.

Eurovan exhibited similar behavior. Start and run fine until.... engine would lose power. Pull over and would die. Restart would be nothing. Sit for an hour or so and could restart and could get the few miles to home. Next day things could be normal or a repeat of slow down and die. This went on for a couple of weeks. The last fail found the battery to be toast even though only a year old. OK, so new battery. All good for the next few days then the gremlins return. New battery is now no good. Determined the alternator had developed enough play that when warm would start to short creating more heat and more of a short allowing it to eat the battery. New alternator and another new battery and all is and has been good.

The 2.4 in my 2006 S40 was stone cold reliable to 157k miles before I sold it. Needed a new alternator at about 145k but that was it. It\u2019s been 2 years and I still miss driving that car. The BEST front seats of any vehicle I\u2019ve driven or ridden in.

Next and least expensive, would be to buy a new alternator from Volvo and have them install it. It could be that there is a known issue with the alternator that you put on there if it's not from Volvo.

I have a 100A alt from a 900 series and it keeps me powered, but barely. And if I have the stereo loud + headlights and fogs and a/c, I get belt squeal.

I owned one for about a year. Loved the car, wish I could have kept it. That being said, it was only in drivable condition for about half the time I owned it. I replaced the alternator, fixed the air suspension, redid some vacuum lines, tried to repair the front diff, and that's where I gave up.

Spent 300 on an alternator to get the whole car apart just to find out it was the wrong one

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?