2000 Jetta Vr6 won't start
I have a 2000 jetta vr6, and have been having issues with the car since i bought it.
When we bought the car it ran great for about a week, then we installed a new radio in, and started to have issues with the car holding a charge overnight. We took the stereo out and put the old one back in with no luck. So we tested volts, and tested fuses to see if we had a draw... NOTHING! So we took it in, and had the serpentine belt, and alternator changed, and without the radio worked good for another week, so we attempted to put the radio back in, and next day it didn't start. So we took the radio out again, and now we're back to square one as it won't hold a charge overnight. Anyone have any ideas? We are going to switch the battery with the GTI battery, as we know that car has no battery issues. Any other suggestions to try?