spacecase70 Posted July 25, 2007 Share Posted July 25, 2007 I have a 76 all srock and the tach likes to fall to zero some times and then it will bounce between zero and the correct rpm. i have replaced the transistorized ignition unit under the dash on the passenger side with one from a 77 and that seems to work alot better than the dual pu unit i had in it plus i did cahange the dual dizzy to single and hooked it ap accordingly( found out if i hooked up the white wire the car wont shut off!) after i did that the problem went away, as well as the performance returned! performance is still good but now the tach is bouncing again, now that i have bored you with the history here's the question i need answered... where is the resistor located on the car for the tach???? it is the only thing i havent replaced because i cannot find it:sad:? help please?? I searched and could not find any info on the location nor does my books show the location Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 25, 2007 Share Posted July 25, 2007 It's probably the tach itself. I've heard of these tachs going bad. Quote Link to comment Share on other sites More sharing options...
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