Originally Posted by DavidR
Just had a tootle round on Saturday and that reminded me that every idiot is out on a bike (peddle) at the weekend plus a few who knew how to ride OK.

All running well but noticed that the tacho was reading around 900 rpm low, so completely zero at tickover! The digital tacho was reading true and everything else seemed OK, so pulled over and turned off the ignition and removed the key for a bit - that sorted it back to normal 550rpm at tickover.

Anyone else had similar ?


Fairly often when I turn off the A/C the tickover remains on the dial at 1000 rpm, it should go back to 550rpm. The digital display is correct....
As you say, re-start cures the error....

Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...