Guest jjohart Posted September 8, 2004 Share Posted September 8, 2004 Hi, I don't know whether this is a mechanical or electrical problem, but this morning, I found that my speedo was underestimating my speed-substantially, to indicate 20mph as about 6mph, 30mph about 7, 40 about 8mph, and so on. I am wondering if this unit has a replaceable cable, and should that be considered the first line of replacement? Is there anywhere that it gets its measurement from that could be in need of lubrication, repositioning, etc? Or, does this sound like I'll need a new speedo, and if so, is that replacing the whole "digital instrument cluster" or just the speedo/tach/temp sub-unit? Bonus: Does anyone know where I can get a digital speedo from UK or Japan OEM stock so as to have readouts above 85mph? Thanks John Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted September 9, 2004 Share Posted September 9, 2004 The speedo cable is a 2 piece - from tranny to inside firewall, from there to speedo. Ypu probably have a bad connection. The only help for reading over 85 would be the right angle adapter JTR sells for the T5 that has a .66:1 reduction ratio. Set the dash to read kph and you'll be close - you could tweak tire diameters a little.... I just put in analog guages (speedo went balls up- odo kept working) set in mine and got rid of the auto climate stuff too (while the dash was out...) Quote Link to comment Share on other sites More sharing options...
Guest BillV Posted October 21, 2004 Share Posted October 21, 2004 What all is involved in switching to analog and manual heater? I have the digital dash and have access to an 81 Turbo for parts, and have considered the change, even though everything works (climate control so-so). If I don't can the bar tach be used with a V8? Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted October 22, 2004 Share Posted October 22, 2004 Need analog cluster, wiring harness, temp sender, defrost switch for guages. Got manual parts from Z-Barn for A/C... Quote Link to comment Share on other sites More sharing options...
(goldfish) Posted October 23, 2004 Share Posted October 23, 2004 Could the roms be reflashed for higher speeds? or maybe an new dash from a 300zx, did they read higher? questions i've wondered about Quote Link to comment Share on other sites More sharing options...
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