2000 Volkswagen Jetta Idle Problem

Tiny
WHARIK
  • MEMBER
  • 2000 VOLKSWAGEN JETTA
2000 Volkswagen Jetta 4 cyl 90000 miles

I just recently replaced the battery on my Jetta due to cold weather killing the old one. Ever since I put the new battery on (about 3 weeks now), my car has not been running right. When I'm not moving either in neutral or with the clutch in, my idle is just fine right where it's supposed to be. But in the car is in motion (say, I'm stopping) with the clutch in or in neutral, my idle will drop to just barely above 600. The engine starts sputtering and I can watch my headlights dim, etc. Did I maybe mess something up when I changed the battery, or is there a bigger problem? (And I've already added more than 100 miles since I changed it, so the "drive until the computer resets" trick doesn't work)
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Monday, January 18th, 2010 AT 3:33 PM

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Tiny
VDUB98
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  • 34 POSTS
Hey there! That sounds like it could be your alternator. I would get that tested at any local car parts store. Like Shucks Oreilly, Auto Zone, Napa. They usually dont charge you anything to do that. Another thing that you could do at home is while your car is running, is take off the positive cable from the battery and if it stops running. Your alternator could be bad. I'm kind of having the same issues like you except mine is a 1998 Jetta. Let me know how it goes.
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Wednesday, January 20th, 2010 AT 6:58 PM

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