Hi I am new here and was wondering if anyone had any clue why this is happening. I have a 2002 Transport with 213000 km on it. The past couple of weeks I have noticed the van's temp gage moving up, almost to the 3/4 mark. I checked to make sure I had fluids and I noticed that the fan to cool the engine down wasn't on. When I turned on my A/C the fan turned on and cooled things down. The temp will rise during stop and go traffic or idiling longer than five minutes. Any idea what is causing this and what damage it can do?
Thanks in advance to anyone who reads this