u/jimbophelps

Image 1 — MGM Overheat and loud noise. Headgasket?
Image 2 — MGM Overheat and loud noise. Headgasket?
▲ 6 r/grandmarquis+1 crossposts

MGM Overheat and loud noise. Headgasket?

Hello,

I have a 2004 MGM as my daily, and yesterday leaving work I let my idle with the AC on for 15 minutes while I got ready to go home. Came out to leave and the car was overheating. Before I could turn it off, I saw the sea of green and turns out it was backing out of the coolant reservoir. The engine was also making the loud noise near the passenger head that I captured in the second video. I noticed a bulge towards in the hose at the thermostat, thought maybe that was the culprit. I swapped that out this morning, and still have the loud noise. My dipstick isn't milky, The car has coolant, but I am worried to keep it on and burp it properly due to the noise. Another strange thing is the loud noise is not constant, it comes on after 5-20 seconds after the car is on.

Wondering if anyone has ways I can eliminate certain components before I call a tow truck monday. Any insight is appreciated!

u/jimbophelps — 1 day ago