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**jocko** · 07-28-2010, 07:16 PM

i'll pile on the module vote - similar symptoms to yours happened to me with an HEI, incl the heat/cool cycle. That'd be my furst guess. But then again, on my own truck, first guess is usually wrong (and expensive). Good luck.

07-28-2010, 07:16 PM	#5
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 18,001	Re: 66 late model 350 HEI ign HELP!! i'll pile on the module vote - similar symptoms to yours happened to me with an HEI, incl the heat/cool cycle. That'd be my furst guess. But then again, on my own truck, first guess is usually wrong (and expensive). Good luck. Last edited by jocko; 07-28-2010 at 07:16 PM.