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[1993Z71]

Hey Guys My Tachometer On My 93 ext Cab Short Box 350 developed a twitch or surge over the past 2 weeks.Flickers about 300 Rpm up and down constantly,Runs no different,Strictly Electrical.Ground or ?

 

[someotherguy]

What kind of shape are all your ignition parts in, particularly the spark plug wires? Might be voltage leaking through affecting the signal.

Richard

 

[1993Z71]

What kind of shape are all your ignition parts in, particularly the spark plug wires? Might be voltage leaking through affecting the signal.

Richard

Wires and distributor are new, Same with plugs