tach signal comes and goes
Posted: Sun Oct 24, 2010 3:57 pm
im running a ms2 on a chevy 4.3 v6. im running the port injectors but a tbi era dizy. the ms is configured as per diy autotunes hei mod kit. it randomly has a tach signal and then if it sits over night it wont come back unless we change the module in the dizy. i dont know if something is burning them up or what. does anyone know a way to test them other than put them in a known running car? and if it is burning them up what could couse this? also is there any suggestions on trouble shooting the tach signal? thanks for any help.