gale
06-23-2006, 08:45 PM
She overheated on a roadtrip 4 or 5 years ago & I thought I had fixed it for good with a new thermostat & fresh coolant. Did it again today after lunch, shot up to just shy of the red on the way back to work. Turned the heater on full blast & it cooled to the 5/8 tick mark, normally it's always straight up 12:00 o'clock.
Let it cool for a few hours & then opened the cap, level was full but gurgled a bit. Tapped the thermostat housing with hammer & opened the bleed valve. Rock steady at 12:00 o'clock all the way home at 95F outside with the a/c on in city traffic. Don't know what was up earlier. Ordered a new thermostat & fan clutch anyway & will do the water pump & radiator aux. switch while I'm at it.
Don't know what happened, possibly it heat-soaked when parked for lunch & perhaps the anti-freeze is on its last legs & it formed a vapor bubble? Better get after none-the-less & put some fresh "blue stuff" in it. Let's hope I don't need to do the dreaded headgasket job. Good excuse to polish the ports, extrude-hone the intake, & put a bumpier cam in it:)
Let it cool for a few hours & then opened the cap, level was full but gurgled a bit. Tapped the thermostat housing with hammer & opened the bleed valve. Rock steady at 12:00 o'clock all the way home at 95F outside with the a/c on in city traffic. Don't know what was up earlier. Ordered a new thermostat & fan clutch anyway & will do the water pump & radiator aux. switch while I'm at it.
Don't know what happened, possibly it heat-soaked when parked for lunch & perhaps the anti-freeze is on its last legs & it formed a vapor bubble? Better get after none-the-less & put some fresh "blue stuff" in it. Let's hope I don't need to do the dreaded headgasket job. Good excuse to polish the ports, extrude-hone the intake, & put a bumpier cam in it:)