No Spark need help
09-16-2009, 08:03 PM
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No Spark need help 87 vette with LQ4 - Car was running fine...and now nothing just cranks over and dumps all kinds of fuel. Put the timing light on it and got no flashes. I am still getting a tach signal. Thought that maybe I had lost either the cam or crank position sensor...does the pcm use one for generating the tach signal and the other for ignition timing?
