Soaruss Posted February 20, 2009 Share Posted February 20, 2009 My speedo has not worked properly from me first getting the car 18 months ago but think i ought to do something about it now. It has a MPH sticker on speedo so i assume it has a converter fitted. I have checked it against a sat nav. Sat nav reading 30mph My speedo 40mph Sat nav reading 40mph My speedo 52mph ish Sat nav reading 50mph My speedo 65mph Sat nav reading 60mph My speedo 77mph ish Sat nav reading 70mph My speedo 88mph ish Sat nav reading 80mph My speedo 100mph I have 19" wheels with correct tyres fitted so rolling radius is right, I had these wheels on my Soarer and speeds read right, even if it is out slightly it only alters speed by a few mph. So could my problem be just a faulty speedo converter (as i said assuming one is fitted which i dont doubt) or could the speedo itself be the main problem?? Are speedo's prone to fault?? Anyone please. Quote Link to comment Share on other sites More sharing options...
Dave17 Posted February 20, 2009 Share Posted February 20, 2009 Gearbox speed sensor went on my MR2 and caused similar problems, although I'd go for a dodgy converter Quote Link to comment Share on other sites More sharing options...
lexsum Posted February 20, 2009 Share Posted February 20, 2009 Q. is the satnav correct? to check try it in another car. Quote Link to comment Share on other sites More sharing options...
stevie_b Posted February 20, 2009 Share Posted February 20, 2009 I read the thread title and I was expecting some kind of swimwear malfunction scandal! I would say the most likely culprit is a speed converter that's way out of calibration. IIRC speedos can't read low by law so they usually read a little bit high, but yours reads waay high. Some of the better converters have an adjuster to calibrate it, but others don't. Quote Link to comment Share on other sites More sharing options...
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