I have a 2000 chevy cavalier with the small 4 cylinder engine, 150,000 miles, 28-30mpg. Recently, while hiway driving, the speedometer jumps around like crazy. Sometimes this also involves a momentary loss of power. It seems to happen more frequently the farther I go e.G a 50 mile trip it may happen once or twice, a 200 mile trip it might happen 10-12 times. It only seems to happen over 50 mph.
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Tuesday, September 18th, 2007 AT 12:30 PM