Water temp light flashing

[moby dick]

Will do and thanks for the help

[moby dick]

Knew it was too good to be true. Light started flashing agin this morning  Off to the dealers for a new sender

[rubjonny]

blue sender is nothing to do with gauge, thats for the ecu. its the black sensor which is for the gauge. if car is pre-90 there is a 42 or 43 relay above the fusebox which is for the level sensor warning system, pull this out and it will disable it. the issue could also be the temp sensor, somehow my mates one failed in such a way the dash would read fine but the light was triggered.  try bridging the pins on the header tank level sensor with a bit of wire, if that sorts it the sensor is bust. if its a pre-90 you can remove the sensor to clean the pins, if post-90 whole tank needs changing

[moby dick]

Thanks for that. I'll have a look for the relay too

[moby dick]

Truely wierd update. I have worked out that the temp light flashes from cold start in the morning, but from then on the light stays off at restarts all day. It does come at ignition (as it should) but then stays off. Coolant levels are fine and the engine runs at just half over on the temp guage so it looks alright. I think I can live with that.