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91 GSX - weird tachometer issue

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Big Ego

Probationary Member
29
0
May 31, 2002
Roseville, California
I've looked at some of the tach issues on here, and I've seen some weird ones, but haven't found any quite like what I'm experiencing.

I let ithe car warm up and moved the idle down with the idle set screw, except the tach didn't move. So I increased the idle, and the tach still didn't move. It just sat at 1k. I sat in the car and revved it a couple of times, but the tach meandered to about 1500-1800 and lazily settled back down to 1k, while the actual RPMs were moving much faster and I definitely revved it to between 3 and 4k.

It runs fine, but the tach is super slow to respond, in either direction. Any help would be appreciated.
 
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