Bob L Posted May 19, 2019 Share Posted May 19, 2019 K series 99 vintage 1.8 supersportTacho is Caterham branded with 3 pin connector. At a steady speed / RPM the needle is steady and reads true. On changing gear or acceleration, the needle fluctuates / waves about 1 to 1.5 K either side of the true reading for a couple of seconds. Disconnected and cleaned connections to the 3 pins on the tachometer, grey plug in the loom and the connection on the coil. Have I missed anywhere? All other gauges operate okIts as if the tachometer is operating ok but the needle is not damped. Going over bumps does not affect it and change lights operate ok which are connected to the tachometer 3 pins. A gentle shake of the tachometer does not move the needle much and nothing sounds or feels loose inside.Faulty tachometer or can I check elsewhere to prove or resolve the issue.Thanks, Bob Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 19, 2019 Member Share Posted May 19, 2019 Faulty tachometer... Probably. But they are repairable. ... can I check elsewhere to prove or resolve the issue. You could try and find another instrument to swap in and test. But there at least two different sockets so I'd add a photo of the back here and your location if you're interested. (I've got a spare in South Oxfordshire.) Jonathan Link to comment Share on other sites More sharing options...
Bob L Posted May 19, 2019 Author Share Posted May 19, 2019 Jonathan,Thanks for the prompt reply and kind offer. I’ll arrange a photograph but based in North Kent so a bit of a stretch. Suspect I may need this fixed so that contact is very useful. Thanks again, Bob Link to comment Share on other sites More sharing options...
DaveMorris Posted May 19, 2019 Share Posted May 19, 2019 I think it is a case of TADTS.At least on my '97 x-flow and later 97 Vx they both behave in the same manner.However, if this is not normal behaviour then it would be nice to know how you get on with any repair.Dave. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 19, 2019 Member Share Posted May 19, 2019 At least on my '97 x-flow and later 97 Vx they both behave in the same manner. Could you add some video clips? Jonathan Link to comment Share on other sites More sharing options...
DaveMorris Posted May 19, 2019 Share Posted May 19, 2019 Jonathan .. . you are joking aren't you :-) I have just about mastered typing.At a REAL push I might struggle through adding a picture (I have some notes somewhere). !! D Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 19, 2019 Member Share Posted May 19, 2019 :-)What sort of 'phone do you have?Jonathan Link to comment Share on other sites More sharing options...
DaveMorris Posted May 20, 2019 Share Posted May 20, 2019 range of i-phones available.(and of course a couple of trusty Nokia bricks .. ) Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 21, 2019 Member Share Posted May 21, 2019 Dave: Your iPhones will take a video clip. If you're interested please send me a Private Message and we'll get it up and linked.Jonathan Link to comment Share on other sites More sharing options...
DaveMorris Posted May 22, 2019 Share Posted May 22, 2019 Next time I'm out and about with passenger who can take the vid clip I will do. D Link to comment Share on other sites More sharing options...
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