edviss Posted October 26, 2020 Author Share Posted October 26, 2020 Hi all, My tachometer stopped working, looking a for a replacement piece. Link to comment Share on other sites More sharing options...
Delboy52 Posted October 26, 2020 Share Posted October 26, 2020 Pretty sure I’ve got a spare. Have you checked the electrical connections at the back of the tachometer are all ok? Maybe even along the circuit as I saw not long ago someone’s had lifted and broke in the flexible plastic. Link to comment Share on other sites More sharing options...
edviss Posted October 26, 2020 Author Share Posted October 26, 2020 [quote name='Delboy52']Pretty sure I’ve got a spare. Have you checked the electrical connections at the back of the tachometer are all ok? Maybe even along the circuit as I saw not long ago someone’s had lifted and broke in the flexible plastic.[/QUOTE] plastic circuit is all nice and clean, went through it with voltmeter and seems to be all good. I have bypassed the resistor for testing same you do on NA to TT swap and now the needle jumps on and off, so it kind of shows the rpm for millisecond. Link to comment Share on other sites More sharing options...
Delboy52 Posted October 26, 2020 Share Posted October 26, 2020 When I get home I’ll dig it out for you. I bought it as a spare from Keron when my own tacho needed modifying for V8 pulses. Sounds like you’re already on it with the circuit checks :) Link to comment Share on other sites More sharing options...
edviss Posted October 26, 2020 Author Share Posted October 26, 2020 [quote name='Delboy52']When I get home I’ll dig it out for you. I bought it as a spare from Keron when my own tacho needed modifying for V8 pulses. Sounds like you’re already on it with the circuit checks :)[/QUOTE] I just bought 43k ohm resistor from ebay for tach pulse na cluster, i dont think it will help but worth a try :) Link to comment Share on other sites More sharing options...
Delboy52 Posted October 26, 2020 Share Posted October 26, 2020 [ATTACH]525675[/ATTACH] The tacho I have is for an auto. Is that ok? Link to comment Share on other sites More sharing options...
edviss Posted October 27, 2020 Author Share Posted October 27, 2020 [quote name='Delboy52'][ATTACH]525675[/ATTACH] The tacho I have is for an auto. Is that ok?[/QUOTE] Hey, Thank you for your response but I wont need it no more :) I have just soldered a new 43k ohm resistor and it started working! If your one ever fails, drop me a message i will show you what needs to be fixed. Link to comment Share on other sites More sharing options...
Delboy52 Posted October 27, 2020 Share Posted October 27, 2020 Nicely done! :thumbs: Glad you found a fix for the ageing Supra tech :) Link to comment Share on other sites More sharing options...
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