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ORIGINAL: goz40
Guys,
I do thank you for your comments. My car ran fine all summer (re-manufactured heads and new gaskets in June and thermosat). Problem started End of November. In the shop twice since than. Pressure tested ,shop said it was ok. No antifreeze in oil. Changed radiator cap. These changes seem to work on morning commute to work. (30 miles). On my way home car overheated and no heat again? In shop again, changed thermosat. This change made it thru the morning commute and on my way home it overheated and lost heat again. When I got home I checked the overflow and it was half full and radiator was full when I removed radiator cap. I reved the engine the thermosat opened and the fluid level dropped to I could barely see it at the bottom of the radiator. I refilled the radiator to proper level. I lost heat and the engine overheated on my way to work this morning. It would overheat and lose heat, I work tur off the heat and the engine temp would drop after a mile or so. I would turn on the heat and the engine temp would remain ok for a few miles and than repeat again to lose heat and engine overheat. It did the same thing tonight on my way home tonight. Damn this really does s_ _ k.
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I am reading the classic case of insufficient coolant. What little you have surges through.
And I haven't heard whether you have ruled-out an air pocket (that is why you are supposed to loosen that top bolt on t-stat housing ... you add coolant until you see it come out through the side hole of that bolt, then resecure that bolt.)
Draining coolant during/after a head gasket jobrequires a lot more coolant than just your normal everyday flush.
Ryan I know you may be speaking from experience or maybe a lot of hearsay when you push the head/head gasket problem or reputation. But it was not my experience. I replaced the gasket with the year-model felpro and no problems. I don't understand how you would be so quick to suspect the head gasket so soon after it was "repaired." Everything we suggest is time and money. But I wouldn't be crackin heads loose unless I saw steam out the talpipe - or had a shop sample the emissions for coolant.
and geez, a problem with coolant only after turning on the heater for the first time. Uhhh guess what?!