Just a couple of things. One I would replace my radiator/coolant cap. Next, I am sure when he replaced the head gasket he had the heads resurfaced. Many times the head will slightly warp due to the heat and need to be resurfaced to ensure they are completely flat so they will have a proper flush mating surface with the engine. If not, another head gasket could blow.
It is possible that you still have some air in the system. I don't have a good picture of the housing your thermostat is in. Some vehicles have a bleed valve on top to open when filling, running, bleeding the air out of the system. ANY air in the system will cause you problems and it isn't always easy to get it out. This may be why you had to add more antifreeze.
The vehicle isn't blowing any white smoke out the exhaust is it?
Does the heater blow hot air?
My suggestion - replace the radiator/coolant cap. This helps stabilize system pressure.
Next, ensure the proper level of coolant is in by turning on the heater, running the vehicle and adding coolant. Do this several times keeping an eye on the temp gage.
Next time you talk to your mechanic you may ask if the head was resurfaced.
Also, I know you have a centrifugal clutch for cooling; you also have a condenser, electric cooling fan. When you turn the AC on does this fan come on?
Also, you might go to Auto Zone or O'Reilly's and for free they can pull the codes to the car. Most important. Once they check your codes, if they find something and you don't get it fixed and need to get back with us, please make sure you tell us exactly what the code was, number and all. Example, if the code was E0568 O2 Sensor bad. Then make sure you give us all of that. While there for free also they can bring their tester out and check your battery, alternator and starter.
Try the above and please get back with us if the problem continues. Again, air in the system is really hard to get out at times. Just keep an eye on that temp gauge and if you get back with us, please provide the above so we can troubleshoot from there.
Tuesday, November 11th, 2008 AT 7:36 PM