Temp gauge runs normal for about 20 minutes, the gives me the signal " high temp/low oil, "engine running at reduced power." I checked both the coolant and oil and both are at normal levels.
SOURCE: 2003 Mountainer location of OBD2 connection
it is under the dash on the drivers side just to the right of the column.
SOURCE: no heat in 97 mercury villager
your heater core may be getting blocked up, or the thermostat may be stuck open at times. you have a few options here, option 1 and 2 cost about the same, option 1: have the thermostat replaced just so you know its working properly, a 97 will most likely not have a telltale way of knowing if the thermostat is bad or going bad. option 2. have the cooling system flushed at a shop. this will try to clear out and debris in the cooling system that may be blocking passages or the heater core. option 3 is the most expensive. have the heater core replaced, the heater core is what provides heat to the hvac system in the dash. a few other things to check would be vacuum lines/actuator/temperature door on your hvac system.
SOURCE: 2003 Mercury Mountaineer with 4.6L is loosing
dont know of any head gasket concerns, usually when the intake manifold leaks it either split and pours out or the heater hose fittings crack and leak. Check the hose connections at the intake and make sure none of the hose clamps have cracked and are leaking
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