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t
My tach is stuck on 900 rpms, when I first purchased my 76 I replaced the tach circuit board which did not fix the problem. I saw a tach filter in the ecklers catalog, could that be the problem and where is it located
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Mine has same problem but at 5500......mines much faster than yours!
ebo


When i shut the car off it only is 3500 or so.....mine is still faster than yours when it's shut off

I posted about how to fix a while ago so I'm sure if you do a search a few posts will come up. I have not bothered with it but maybe I'll get in to that this layup season.

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Lifetime Member
Send PMHOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Tony,
lukesvette 2010-09-06 14:24:32
There's a procedure to recalibrate or "zero" the needle on the tach after the tach board is replaced. Has to be done with the tach out of the dash. Sounds like next year's BBQ - or any other weekend you feel like coming by....

I am running my tach without the filter for quite some time and never had a problem.
Paul
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t
Paul where can I find that procedure, thanks
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t
paul, nevermind I found the procedure with my paperwork, thanks again you always come thru with the answers
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Lifetime Member
Send PMHOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Be careful and don't push too hard on the needle!!
LukesVette Homepage
Veteran of Operation Iraqi Freedom
101st Airborne(AirAssault!)
God Bless America
Support Our Troops
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I think the filter just keeps the tach needle from bouncing around with idle fluctuation like mine does with the cable drive..
Rich
Rich

My first parade at Carlisle 2010
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in Forum: C3 Electrical, Body and Interior
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