The most likely cause is an air pocket inside the engine somewhere. Here is what I do in this situation.
Jack the car up so the the front of the engine is up (will help in getting air pocket out) with engine cold loosen radiator cap so pressure doesn't build, run vehicle till starts to warm up then (if has rpm gauge) rev engine to about 2k till about 3/4 or so of gauge. Turn vehicle off let sit for about 10 - 15 minutes refill radiator. Start vehicle let run to see if still overheats, if does repeat until it doesn't. Had one that took me 3 hours to clear many year ago.
Sunday, September 18th, 2016 AT 12:39 PM