Help the blinking coolant indicator light on my 91 Vanagon Auto Multi van comes on and buzzes at interment times. And the engine is not over heating. I know there are at least three sensors to register hot engine and or hot coolant. Is the air conditioner interconnected. Because it worked, didn't work than worked when one of coolant hoses was just replaced and now doesn't work. How would you determine which sensor is the bad one. Computer engine scans don't nessecary include all sensors on these engines. I had this problem 6 to 8 months ago than it went away.
Any ideas
Charles Nighbor