1991 8v. A bit of a strange one after starting the car up after a few weeks, the Rev counter now fluctuates on idle and the temp light flashes. During this the MFA shows time but won’t scroll through the functions. Water levels ok and car heats up properly, gauge working, with fan coming in and car runs fine.
Taking it for a short run the display returns to normal, but on next start up the issue returns.
Checked main earths, cleaned coil contacts, sensor contacts, relays etc. Probably not a major issue but good to get it fixed.