3rd Gear Member
Join Date: Jan 2004
Location: Duluth, Minnesota
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Make a Thanksgiving Day Dream Come True (HELP ME FIX MY CAR)
I have a 98 M3 and just replaced the alternator. I let my battery charge for fifteen minutes or so before I started it after the replacement, it started but the alternator was making a very loud whine noise. I figured it was just working extra hard to catch up. I let it run for ten minutes or so before shutting it off and wondering if something was wrong. I put the battery on a drip charger for 2 days until it was full and tried starting it again. It started this time and sounded completely normal, running through it's normal warm up cycle. After it went to idle at around 700rpm i tried to rev it but it just boggs down and kills. After a few times of this i got it to rev, but it was way behind and super sluggish. 99% of the time it just kills when the gas gets pressed.
I also replaced my air mass boot, i'm wondering if that could have anything to do with it. Any ideas would be very welcomed, I'm trying to get home for Thanksgiving!