Speedometer jumps between 20 and 40 when stopped

2002 FORD TAURUS
100,000 MILES
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JESSY
  • MEMBER
  • 1 POST
The speedometer jumps between 20 and 40 mph when stopped. My blinkers also blink double time when the speedometer does this. Also, when I turn my lights on, the car speeds up, and shudders like it is going to die. It does not do this every time, and it just started today.
May 5, 2012 at 1:53 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
check battery cables and all grounds around the battery. sounds like a bad ground issue

Roy
May 5, 2012 at 1:59 PM
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