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Showing results for tags 'Air lock'.
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So here's the scoop, I just replaced the radiator in a 2002 Subaru Legacy base model with AT. The original OEM radiator cracked just below the top neck, causing the car to start overheating, hence the replacement. I replaced it with a parts store replacement radiator, not an OEM one. I didn't change any hoses, thermostat, etc., just the radiator and a coolant fill. I know, I probably should've done a new thermostat too, but needed the car back on the road asap, which now hasn't happened. I filled the radiator through the fill neck, topped off the overflow tank and let the car idle up to normal temp. I made sure to fill it until it didn't draw anymore in. First test drive, within a mile or so the gauge starts climbing to 3/4 or so. Pulled over, let it cool down and limped it back home. I did some research, thinking that there might be air locks, so I tried various methods of burping - squeezing the upper and lower hoses while running with the radiator cap off, letting the heat run full blast while do so... nothing seems to help. I'm not sure if there is still air in there or if I have a problem with the thermostat possibly? I'm solely basing all of this off the stock temp gauge... At idle, the car never goes over the 1/2 mark. It only starts to soar when you take it for a drive, and it goes up within a mile give or take. The heat is very hot and working great, the lower radiator hose never warms up at all??? Not sure if it should? Take into consideration that it's in the lower 30's outside. Both cooling fans kick on and off at idle as well. I've not seen it draw anything from or overflow into the tank at all. The coolant is not boiling, it's not shooting out of the neck or doing much of anything with the rad cap off. I've tried just about everything to make certain there is no air trapped. So I'm kinda stumped at this point... My next plan of action is to drain it all and replace the thermostat, but I thought I'd seek some advice before doing so.