06-26-2005, 11:41 AM | #1 |
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Location: Kamloops, BC, Canada
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tach jumping around
in my brothers chevelle hes got a 5in auto meter tach and the need jumps around, whats causing that?
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1993 Chevrolet K2500 454 4L80E 1974 GMC 1/2t 2wd Stepside 305 auto *sold* 1985 Ford Mustang GT 5.0 5spd |
06-26-2005, 12:21 PM | #2 |
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Mine does this. Is it a Pro Comp tach? I think mine may be the distributor. I was told it was in the wiring, but I changed all of it and it still does it.
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Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels |
06-26-2005, 05:51 PM | #3 |
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i think if it is an hei your wire that goes to the part on the cap is lose, or it isn't grounded right, ground it some where else or if that doesn't fix it, your tach might be going south
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06-26-2005, 07:47 PM | #4 |
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Location: Kamloops, BC, Canada
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well hes had 2 different ones and they both have done the same thing, and its the autogauge one
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1993 Chevrolet K2500 454 4L80E 1974 GMC 1/2t 2wd Stepside 305 auto *sold* 1985 Ford Mustang GT 5.0 5spd |
06-26-2005, 09:54 PM | #5 |
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I've only had tachs jump around when they had bad grounds.
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06-26-2005, 10:11 PM | #6 |
Mark
Join Date: May 2005
Location: columbus ohio
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check your ground
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