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Tachometer stopped working. ??? 1985 porsche 911
Has anyone attempted rebuilding a Tachometer with success? ... sounds scary!
If so, difficulty 1-5? Where would I purchase replacement parts? |
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02-20-2021, 02:02 PM
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Join Date: Oct 2008
Location: Denver, CO
Posts: 3,493
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any idea what caused your tach to die? When mine died many years ago (during the very beginning of my ownership), it was a casualty of an undiagnosed voltage regulator failure that manifest itself in occasional voltage spikes from the alternator that manifest itself through the occasional "dimming" of instrument and headlights (I was really seeing the lights go back to normal after a very bright transient caused by the spike. The voltage spikes also a) created what I know know as a sulphur aroma from the boiling battery, b) fried a component of my DME computer, and c) knocked out part of my radio's display.
I ended up sending my tach to North Hollywood for repair (they did a great job and it's still working fine 25+ years later) so can't help you with repair advice. Do, however, suggest that you find cause of failure so it doesn't happen again. |
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02-20-2021, 02:46 PM
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Join Date: Dec 2007
Location: Just a little north of 13669/Nation's capital
Posts: 1,279
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1986 Targa Guards Red 2021 MT09 SP |
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02-20-2021, 03:19 PM
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darrin- It had wild fluctuations..now it was not moving from 1000rpm and has sunk to 500 rpm and again not moving.
brighton911- please read symptoms above... the I will check out the link you sent. Thanks |
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02-20-2021, 04:25 PM
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Join Date: Oct 2004
Location: S California
Posts: 7,951
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The 3.2 tachs are pretty complicated because they have all the components to control the shift light. Bob Ashlock's tach board is a great solution if you're comfortable soldering and no longer care about the shift light. I've repaired a couple 3.2 tachs but it takes a while to diagnose the issue and the replacement components are not all available.
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1970 911E Sportomatic Albert Blue 1971 911T Sunroof Coupe w/ Twin Plug 2.5 MFI 1973 911E Glacier Blue 1973 911E RSR Tribute Viper Green w/ 3.5 Twin Plug MFI |
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02-20-2021, 07:38 PM
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Ok thanks... by the way, I took it out to look at the wiring... when I put it back it started working again
Crazy |
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02-21-2021, 04:09 PM
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Join Date: Oct 2004
Location: S California
Posts: 7,951
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Quote:
__________________
1970 911E Sportomatic Albert Blue 1971 911T Sunroof Coupe w/ Twin Plug 2.5 MFI 1973 911E Glacier Blue 1973 911E RSR Tribute Viper Green w/ 3.5 Twin Plug MFI |
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02-21-2021, 04:14 PM
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| tachometer , tachometer issues |
Carerra
