A few months ago, I converted my '89 XJ to the later "open" cooling system. I installed a new radiator, new thermostat, new heater control valve, and new hoses. Now that it's cold, my heat isn't working as well as it should be. I've even gone so far as to thin out the coolant/water ratio(60/40), and block off part of the radiator, and it still comes out of the vents at barely lukewarm temperature. I don't recall if the heat was working properly before the swap, as I didn't drive it much between the time I bought it and last summer.
That said, the gauge rarely gets to the halfway mark. I think the electric fan may come on too soon. Also, if I park the truck and bring it up to about 2500rpm, the heat works great. This leads me to believe that the water pump isn't pushing hard enough to get hot cooling flowing all the way to the heater core when I'm cruising. Am I crazy? All of the other parts of the cooling system are new.
Also - and I'm not sure that this is at all related - Every once in a while, the truck will leak coolant, but only when it's not running. It appears to be coming from the water pump area(above the front crank pulley down the driver's side of the block), and I assume it's coming from the weep hole in the pump. Could this be due to a faulty radiator cap that may not be relieving enough pressure? I don't know what PSI they're supposed to be rated at, but the new one that I installed during the swap says 16psi on it.
Help me guys, I'm freezing to death!
That said, the gauge rarely gets to the halfway mark. I think the electric fan may come on too soon. Also, if I park the truck and bring it up to about 2500rpm, the heat works great. This leads me to believe that the water pump isn't pushing hard enough to get hot cooling flowing all the way to the heater core when I'm cruising. Am I crazy? All of the other parts of the cooling system are new.
Also - and I'm not sure that this is at all related - Every once in a while, the truck will leak coolant, but only when it's not running. It appears to be coming from the water pump area(above the front crank pulley down the driver's side of the block), and I assume it's coming from the weep hole in the pump. Could this be due to a faulty radiator cap that may not be relieving enough pressure? I don't know what PSI they're supposed to be rated at, but the new one that I installed during the swap says 16psi on it.
Help me guys, I'm freezing to death!