Good day!

I recently had my other 240 set aside when the HG busted and now my 245 showing similar signs. My temp guage goes up about a needles width past normal and then back to it usual place when being started from cold. That is just what happened before my other car broke down. There's no oil in coolant or coolant in oil either. Other things going on is bubbling sound behind the dash, it revs once or twice at startup and a slight high idle. I was going to change coolant and thermostat but its too cold outside. I guess my question is if it can be anything else then the headgasket, what should I have a look at?

Thanks in advance,

John