Re: Running hot

Posted by Bobby On 2012/9/14 18:38:48

Howard's right, as usual...get the $19.95 one from Harbor Freight.

Coolant overflow? Do you have a new, proper lb. pressure radiator cap? What happens is that when the coolant expands naturally as it gets hot, the radiator cap spring will react to the amount of pressure the hot coolant is giving off, and when it passes a certain, predetermined temp, it will allow it to escape. This is to protect the cooling system/heater core from excessive pressure. If you don't have the right cap (or it's old and malfunctioning)..this is simple, I know..it won't operate properly. If you're not sure, go NAPA and get a new cap. Coolant (COLD) should cover the honeycomb part when you look down from the open cap. If you add more (Like to the very top) it will flow out, not so much b/c it's actually overheating, but, recall from high school, that things expand when heated, so hot coolant overfilled will spill out.

Is this a new radiator and coolant, Jeff?