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Old 06-04-2000, 04:24 PM
Silverado84 Silverado84 is offline
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Join Date: Jun 2000
Location: Oregon
Posts: 4
Anyone ever seen thisone before? I recently installed a tachometer in my 84 half ton Silverado-305, HEI dist. I'ts hooked up correctly, but the needle &quot;jumps&quot; anywhere from 200 to 500 R.P.M.' IDLE or STEADY throttle ONLY !!!!!!! Under acceleration the needle is steady & appears to work correctly !!!! A bad module ?? a wobbly shaft ? an elect. prob, somewhere else????? Thanks, in advance, for any advice given.........Jesse<p>----------<br>Jesse Sketo<br>Jesse Sketo
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Old 06-04-2000, 07:40 PM
Posts: n/a
lots of low end tachs wont work well with HEI. Some come with a little potentiometer that needs to be wired into the signal (green) lead. this can be adusted to take out the bounce.
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