RPM GAUGE STAYS AT ZERO AND IDLES ROUGH AND JUMPS AND SHAKES WHILE IM DRIVING

Asked by Aug 29, 2012 at 06:33 PM about the 2007 Chevrolet Cobalt 2 Dr LS Coupe

Question type: Maintenance & Repair

2 Answers

62,815

Check your connections at the alternater. Sometimes the tach (RPM Gauge) is hooked up there. HTH. -Jim

1 out of 1 people think this is helpful.
145

I've experienced that with my cobalt's air intake, may not be your specific problem, but I took it apart and put it back together and it stooped jumping.

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