Kevin.payne.15 Posted July 24, 2016 Report Share Posted July 24, 2016 Ok so I'm not mad well not completely. Today we were sitting in stationary traffic and I looked at the speedo and it was reading that we were doing 30 mph. I revved the engine ( I must sort out the low tickover but that's another issue) and the reading went up to 70! Honest we weren't moving. I can provide evidence from the management if required! I have absolutely no idea how this can be happening Anyone else experienced this? Solution? Kevin Link to comment Share on other sites More sharing options...
mishmosh Posted July 24, 2016 Report Share Posted July 24, 2016 sounds like you have the Tacho drive in the back of it. Link to comment Share on other sites More sharing options...
Kevin.payne.15 Posted July 24, 2016 Author Report Share Posted July 24, 2016 Nope. Rev counter worked as normal Kevin Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 25, 2016 Report Share Posted July 25, 2016 Its a combination of hot weather and a nice wine do you have a doctor who screwdriver in the boot ? I would think the needle hair spring is in some trouble and engine vibro is shifting the needle never seen this before Pete Link to comment Share on other sites More sharing options...
Clive Posted July 25, 2016 Report Share Posted July 25, 2016 I suspect time for a replacement speedo (or have existing repaired, but that is not the cheap option) Link to comment Share on other sites More sharing options...
rlubikey Posted July 25, 2016 Report Share Posted July 25, 2016 As a final check, remove the drive cable from the back of the speedo and check the inner isn't turning when the engine's running. Be careful, just in case it is (though I can't see how!) as if it snags something it could do some damage. Cheers, Richard Link to comment Share on other sites More sharing options...
Kevin.payne.15 Posted July 25, 2016 Author Report Share Posted July 25, 2016 Thanks all. Will check drive this weekend but had resigned myself to a rebuild. Do we know anyone decent? Met one guy at the Bristol show two years ago but have subsequently lost it! Thanks Kevin Link to comment Share on other sites More sharing options...
Darren Groves Posted July 25, 2016 Report Share Posted July 25, 2016 You could try: http://www.speedycables.com/ Link to comment Share on other sites More sharing options...
Stewart Vacher Posted July 25, 2016 Report Share Posted July 25, 2016 Hi Kevin, I had problems with my GT6 speedo earlier this year (extremely noisy before the needle flew off). I looked on the web for a secondhand unit only to find that they we I felt very expensive. When I asked for advice on this forum I was told that I also needed to make sure it had the right calibration number to match my overdrive and rear axial ratio. Pete Lewis was very helpful and gave me the details of a firm that would recondition my existing unit. The firm is Speedy Cables (Email: sales@speedycables.com) Tel:01639 73200. I rang them and they gave me a quote inclusive of return delivery and an estimate of 4-5 weeks turnaround. They did a great job within the timescale. It was a bit more expensive than some secondhand ones I saw but looks and functions like new and I feel was well worth the money. Link to comment Share on other sites More sharing options...
Kevin.payne.15 Posted July 26, 2016 Author Report Share Posted July 26, 2016 Thanks. I'll try them. To prove I'm not completely mad, the car is currently reading 15 mph while parked in the garage. Regards Kevin Link to comment Share on other sites More sharing options...
Clive Posted July 26, 2016 Report Share Posted July 26, 2016 Depending on what speedo, they are often only £5-£10 used. Some are rare and tend to fetch rather more, just depends which car. And how much you wish to spend! (or not ) Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 26, 2016 Report Share Posted July 26, 2016 http://www.jdo1.com/ here is also JDO why not remove the rim and glass ,take the insides out for a look it may just need the needle spindle lubricating, dont ever remove the needle , but you will see the hair spring I mentioned , is it intact? Link to comment Share on other sites More sharing options...
Ye-Gads Posted September 11, 2016 Report Share Posted September 11, 2016 Hi, just wondered if you resolved the problem with the speedo, as I've just noticed a similar issue on my Spits speedo, its variying in speed but on idle sits at 20 mph. Thanks Jason Link to comment Share on other sites More sharing options...
Mike Bird Posted September 30, 2018 Report Share Posted September 30, 2018 On 7/25/2016 at 6:51 AM, clive said: I suspect time for a replacement speedo (or have existing repaired, but that is not the cheap option) I have prettu much the same problem. My speedo stopped reading the full speed and takes ages to get up to speed. The same happens when slowing down and it often stops at around 15mph. A sharp tapon the dial usually resolves this. Can anyone suggest where to get it repaired or should I just get a new one Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 1, 2018 Report Share Posted October 1, 2018 Strip out the mechanism, do not remove the needle A dab of light oil pn the needle spindle will solve most sticking needles Some instruments actually use a dab of silicon grease on the needle spindle to act as a damper this goes hard with age Caref clean and a dash of lube will work The hardest job is is getting the rim and glass to leave the degraded rubber 0 ring then 2 screws and its in your hands Well worth a look before you dig into the wallet Pete Link to comment Share on other sites More sharing options...
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