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LS1 stumbles and tach flutters (video)

   
Old 08-25-2011, 04:26 PM
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Default LS1 stumbles and tach flutters (video)
Just as the tiltle says... Its in a 70 camaro with a t56. 99 and up wiring harness. I was wondering what sensor controls the tach? Is it the reluctor wheel? Thanks guys



or

http://www.youtube.com/watch?v=ZNOdfp-Xbx8
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Old 08-26-2011, 02:45 PM
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Where are you picking up the tach signal? I had to use a pull up resistor with my Autometer tach for it to even work. You may need one to stabilize the tach needle.

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Old 08-29-2011, 02:50 PM
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Im picking up the tach signal from a wire coming directly from a PSI Wiring harness. I'll check this pull up resistor thing thanks!
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Old 08-29-2011, 06:39 PM
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Same here w/ the retro Sun tach in my 55.
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Old 08-29-2011, 07:27 PM
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Not sure if I'm misunderstanding the trouble. Does the engine stumble AND the tach flutters, or is it only the tach fluttering (and making the engine look like its' stumbling)?
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Old 08-29-2011, 07:34 PM
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If it's only the tach that's misbehaving, here is the tach ckt remedy, courtesy of FastKat-after you redirect to this thread, scroll down about 75% http://www.buyrcars.com/jag.htm
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