Erractic Tachometer

[Slowtime]

So yesterday i am driving home and i was looking at my tachmeter and happened to notive that my rpm's were around 3-4rpm. Car drove no differntly, shut off music and engine sounded the same. found this funny because only other time gauges act erractic is in summer when they seem to stick.(I have reverse gauges)

Any possible reasons why this is happening? I will admit to doing a search but not as through because i am at work. Any help is appreciatted.

 

[nyknick1015]

Re: Erractic Tachmeter

uhh.... u have an outside powersource seeping into the tach power... wires touching or bad ground.... thats what happened with my cb7 when i put in the reverse gauges.... it kept bouncing around when driving yet it drove fine

 

[Slowtime]

Re: Erractic Tachmeter

Thanks for your help. will check it out. funny thing is that i have had the reverse gauges for 4 years and this is teh first times this has happened. Again, thank you for your help!