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01-01-2008, 01:00 PM
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#1 |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Tach problem
My tach jumps all over the place at idle when I turn on the heater or AC fan It smooths out as the RPM,s come up. I have it getting power directly from the the fuse box on a separate fuse. I was wondering if the Alt not charging at idle would have anything to do with this. Its a MSD 6A ignition and a stock Tach
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69 Chevy 4x4 383 Power 
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01-01-2008, 01:50 PM
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#2 |
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Senior Member
 
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,886
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Re: Tach problem
Mine (stock set-up) did that jumping around when the connection to the coil needed cleaning and tightening,if that helps any.
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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01-01-2008, 04:27 PM
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#3 |
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Registered User
Join Date: Jun 2007
Location: Georgetown , TX
Posts: 166
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Re: Tach problem
a good check of all conections including the fuse would not hurt
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70 Chevy C-10 short step 250/3 on the tree Owned: 71 longbed Cheyenne 70 swb |
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