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#1 |
Registered User
Join Date: Apr 2004
Location: Covington,Ga
Posts: 453
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OK I wired up the tach, one wire to dist. - one wire to the fuse panel( marked ing. unfused. When I crank it up the tach will move with the engine rpms but at I think much lower value, also at idle the tach read o. Do I just need to adjust it with the screw in the back?
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#2 |
Registered User
![]() Join Date: Apr 2000
Location: Bradenton, FL
Posts: 1,036
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Did you conect a ground wire?
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#3 |
Registered User
Join Date: Apr 2004
Location: Covington,Ga
Posts: 453
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I was thinking it was grounded by the ground wire in the harness. But I did try to ground the thrid prong on the back to a good chasis ground.,
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#4 |
huh?
![]() Join Date: May 2000
Location: Washington, Illinois
Posts: 5,692
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Need a little more info. Is it an aftermarket tach or a stock tach? V8 or 6 cyl? I'm not saying I can answer all your questions, but I may be able to help.
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#5 |
Still drivin' a Rat Rod
Join Date: Sep 2004
Location: Monett Missouri
Posts: 4,925
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If it's an aftermarket,check to see that it is set to the proper cylinder setting.4,6,8 cyl.I bet that's the problem.Some stock tachs have this setting too.
Prolly on the back,may have to remove the cover to get to it
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#6 |
Registered User
Join Date: Apr 2004
Location: Covington,Ga
Posts: 453
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Stock tach, new goodwrench performance deluxe 350. It came with dist. wires and plugs. HEI dist,
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#7 |
huh?
![]() Join Date: May 2000
Location: Washington, Illinois
Posts: 5,692
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If the tach is an original 6 cyl tach, it'll read odd, but I think it should read high
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Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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I've seen a stock one act like this. I'd rev the sucker to about 3500 RPM and hold it, and the needle would slowly rise to about 1000 RPM.
We chucked it and slapped in an aftermarket one. |
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#9 |
Registered User
Join Date: Apr 2004
Location: Covington,Ga
Posts: 453
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Thanks guys for the help. Iguess I'll play with the adjustments and see what happens. Just made the normal nightly run to the gro. store and the tach would move a little at normal rpm and speeds around 0-500 but when I hammer it the tach seems to read closer to what it should, but as soon as I let off the gas the tach returns quickly to 0-500 range. Maybe it needs adjusting. Thanks
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