First off, these issues first happened maybe 6-8 months ago, then just decided to stop happening.... Pretty near normal all summer. Now, they have just resurfaced in the past 3-4 days....
I sometimes hear a "gurgling" sound when I start up, or when I rev when idling.... I noticed the engine temp gauge will swing way up to near the red zone after ~10mins driving.... Sometimes it will head back to normal; other times no. It is cold here now, so when I turn on the heater, etc, it starts warm but then gets and stays cold. My drivers side windshield will tend to fog up instead of defrosting. Just today, I parked on a hill and checked the radiator. The overflow was right at the full line, and I topped off the radiator. After two 10-minute drives, the engine was saying it was very hot.... When back home, I checked under the hood. The reservoir was near full, almost spilling over.... What the heck is going on?
Thnx
