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Corvette
C3 Forum
Tacho not reading
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<blockquote data-quote="Challenger_7" data-source="post: 240345" data-attributes="member: 7236"><p>Hello everyone, hope you all are well and safe <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p>I'm new on this forum and this is my first post.</p><p>I just concluded a full ground up restoration on my 74 C3 (Manual 454) Stingray which took a good many years to finish.</p><p>But having seen the final outcome and felt the power and smooth ride, feel it was worth the trouble and money <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Now that I have the car back, I am looking at the few hitches that still need sorting out.</p><p>The first is the Tachometer. Mine had a mechanical one and I changed over to electronic, including the distributor and all needed items.</p><p>When I first started the car at the mechanic's shop a few weeks back, the Tachometer was reading but at least some 1500 (estimated) rpm less.</p><p>The car still had to undergo some repairs in the meantime, but now that I have taken delivery, ithe tacho t is not working anymore.</p><p>With the ignition off, the needle is at Zero. When I switch on, it slides backwards and stops at the 7000 rpm, and when I start the engine, nothing happens.</p><p>The needle stays at the 7000 rpm and when I switch off, it slides forward again to sit on the Zero.</p><p>The only thing I notice is that as soon as the engine picks up when starting, the needle shoots forward to approx 1000 rpm for a split of a second before resting at the 7000.</p><p>All the wires, as is the case with every item on the car, are brand new from Zip Corvette.</p><p>I checked around for any possible loose connections but found none.</p><p>I will also add to this, but not sure if related, that the oil pressure and water temp gauges either were not working or stopped working on the instrument panel.</p><p>The fuel gauge and clock are working perfectly.</p><p></p><p>Any advice as to where to look at?</p><p>Thank you for any suggestions.</p><p></p><p>Cheers</p></blockquote><p></p>
[QUOTE="Challenger_7, post: 240345, member: 7236"] Hello everyone, hope you all are well and safe :) I'm new on this forum and this is my first post. I just concluded a full ground up restoration on my 74 C3 (Manual 454) Stingray which took a good many years to finish. But having seen the final outcome and felt the power and smooth ride, feel it was worth the trouble and money :) Now that I have the car back, I am looking at the few hitches that still need sorting out. The first is the Tachometer. Mine had a mechanical one and I changed over to electronic, including the distributor and all needed items. When I first started the car at the mechanic's shop a few weeks back, the Tachometer was reading but at least some 1500 (estimated) rpm less. The car still had to undergo some repairs in the meantime, but now that I have taken delivery, ithe tacho t is not working anymore. With the ignition off, the needle is at Zero. When I switch on, it slides backwards and stops at the 7000 rpm, and when I start the engine, nothing happens. The needle stays at the 7000 rpm and when I switch off, it slides forward again to sit on the Zero. The only thing I notice is that as soon as the engine picks up when starting, the needle shoots forward to approx 1000 rpm for a split of a second before resting at the 7000. All the wires, as is the case with every item on the car, are brand new from Zip Corvette. I checked around for any possible loose connections but found none. I will also add to this, but not sure if related, that the oil pressure and water temp gauges either were not working or stopped working on the instrument panel. The fuel gauge and clock are working perfectly. Any advice as to where to look at? Thank you for any suggestions. Cheers [/QUOTE]
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Corvette
C3 Forum
Tacho not reading
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