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Registered
Join Date: Apr 2004
Location: MASS
Posts: 89
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Jumping Tach
I have a 1970 911 2.0 idle runs good but when I hit high Rpm the tach jumps and breaks down any ideas??? Also the second fuse on fire wall keeps burning out I know I have a short but does this have anything to do with the tach.? Thanks Mark
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01-01-2007, 08:13 AM
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I'm with Bill
Join Date: Jun 2005
Location: Scottsville Va
Posts: 24,186
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May want to check the charging system, an over charging alt can cause these problems. Also check all the grounds you can find.
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Electrical problems on a pick-up will do that to a guy- 1990C4S |
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01-01-2007, 08:55 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Search bouncing tach. Points and voltage regulator are the likely culprits.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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01-01-2007, 10:06 AM
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Registered
Join Date: Apr 2004
Location: MASS
Posts: 89
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Thanks guys, what about the second fuse what does that control
Thanks again mark |
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01-01-2007, 10:10 AM
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Registered
Join Date: Oct 2004
Location: minneapolis MN
Posts: 463
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check your points. there getting cooked.
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'71 S track car, 2.7L & Webers forever! |
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01-01-2007, 12:52 PM
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Registered
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Isn't the tach. on a 70 mechanical (ie Cable drive)?
I would check to see if the inner cable is fraying and catching on the outer casing. Good luck.
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Life is not a journey to the grave with a pretty and well preserved body but to skid in sideways, used and worn out saying " What a trip! |
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01-01-2007, 01:06 PM
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I'm with Bill
Join Date: Jun 2005
Location: Scottsville Va
Posts: 24,186
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Quote:
__________________
Electrical problems on a pick-up will do that to a guy- 1990C4S |
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01-01-2007, 01:18 PM
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