tach not working properly 600-2400rpm only
Hi TC. Ever since i put in a MSD in my 67 vert, my tach stopped working properly. I have read previous forums and checked all wiring and grounds. I then called MSD and they sent me a tach filter. Still not working properly. My syptoms are as follows....when the car is running at idle, it stays at 1,000, and then when i rev the engine, it maxes out at a 2400 rpm. As soon as I turn the car off, the needle drops to 600 and stays there...it doesnt even go to 0. Any suggestions or comments are appreciated.