WarGin
NAXJA Forum User
- Location
- New Milford CT
Hi guys, I've been messing with my cooling system for over a month now, trying to get my heat to work. The heater core input valve is permanently opened, the entire cooling system was flushed 5 times in the past month. I've replaced upper radiator and heater core hoses, replaced my radiator cap (more on that later) , a new thermostat housing with the sensor port, got an aftermarket MECHANiCAl gauge to try and monitor everything.
My grand accomplishment has been nothing. If anything the heat is colder then the slightly warm air it was before.
84 2.5l with a weber.
Ok , so first off, early XJs have a closed cooling system, with the only opening being the pressure bottle, supposedly. Not on mine.
I have a radiator with a 13psi cap going to an overflow that has a cap that doesn't appear to hold pressure.
Replaced tha cap after the first flush, split upper rad hose, then a week later another heater hose went so I replaced that as well. Burped burped burped burped. Still no heat. Put cardboard in front of the radiator, still no heat.
Flushed burped, burped and flushed some more, nada.
Got a thermostat housing yesterday and hooked it up to a sunpro mechanical temp gauge, and I have discovered that, after running for over an hour in yesterday's snow, in 4wd, with cardboard covering 2/3rds of the radiator, my max temp achieved was 120 degrees. However , as soon as I turned the car off,
The temp would rise to 195 exactly after about 5-10mins. Temps dropped back down to below 100 (not even registering on the gauge) as soon as I fired her up again.
My boss (wheels a YJ) said it could be my water pump not moving enough water?
But wouldn't that make me overheat?
I'm at my wits end, help me avoid losing a toe to frostbite.
My grand accomplishment has been nothing. If anything the heat is colder then the slightly warm air it was before.
84 2.5l with a weber.
Ok , so first off, early XJs have a closed cooling system, with the only opening being the pressure bottle, supposedly. Not on mine.
I have a radiator with a 13psi cap going to an overflow that has a cap that doesn't appear to hold pressure.
Replaced tha cap after the first flush, split upper rad hose, then a week later another heater hose went so I replaced that as well. Burped burped burped burped. Still no heat. Put cardboard in front of the radiator, still no heat.
Flushed burped, burped and flushed some more, nada.
Got a thermostat housing yesterday and hooked it up to a sunpro mechanical temp gauge, and I have discovered that, after running for over an hour in yesterday's snow, in 4wd, with cardboard covering 2/3rds of the radiator, my max temp achieved was 120 degrees. However , as soon as I turned the car off,
The temp would rise to 195 exactly after about 5-10mins. Temps dropped back down to below 100 (not even registering on the gauge) as soon as I fired her up again.
My boss (wheels a YJ) said it could be my water pump not moving enough water?
But wouldn't that make me overheat?
I'm at my wits end, help me avoid losing a toe to frostbite.