My 1968 1.6 diesel automatic Karoq has developed an overheating issue. THe temp range goes off the clock after warming up when go over 1500 rpm or encounter up hill stretches,. Red warning alarms come up telling me to pull off the rd. Howver if I ignore this and manage the engine at 1500 rpm it quickly (immediately) reverts to normal temp. I have ascertained that it is not an oil or a coolant issue.
my local garage has run it through the computer and can find no reason. He is inclined to think it’s n issue with the electronic water pump that clicks in when the engine is up to operating temp. It is booked in for a potential new pump and timing belt next week. I am no so sure s the temp goes down far too quickly to indicate a pump problem! I am hopeful it just sensor problem , and it’s is accessible for replacement!!! Has anyone out there experienced similar issues and how were they overcome? I am not inclined to go to the expense of replacing the pump and associated work if it’s not necessary. Sound s though this could be expensive.
thanks for your interest