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Does anyone have a diagram of how the cooling system works on a third gen? On my 92, the heater core blew out, which I can replace no problem, but one of the heater lines i noticed is damaged as well. What I was going to do at first is just skip the core entirely and install a waterpump from the trucks run a hose from the front of the intake into the upper intake of the pump that the trucks have, and skip the whole mess. But then I noticed the hose coming off the radiator, right about the trans cooler. It looks like a line going to an oil cooler. But is the flow going in or out? And then the other line from the cooler makes a T, one going to the heater core if I remember. Then theres that big valve, whatever its called, that when a vacuum is applied, fluid flow. Which I assume is do allow fluid to flow to the heater core. But if the core is already passed fluid via the oil cooler.... i dont know i give up. I guess I need a diagram. I almost want to just rip it all out and make it like the trucks, where it flows from the intake to the core, out of the core back to the top of the water pump. And then somehow involve the oil cooler. Or just eliminate it. Dunno
Here's my paint skills to the test. I think this is right. I just need kind of an idea the direction everything is supposed to flow. I guess my question is what direction is the flow into the oil cooler. If its coming from the radiator, that makes sense because of the cooler water. But if its going that direction, that means the fluid ends up into the intake. But that doesnt seem right to me - fluid going into a hot intake after being slightly cooled from the oil cooler.
But if its the other direction... from the intake to the cooler, that just hot water going to a cooler.
One more and then Ill stop replying to myself. Not only did the heater core go out, but the dude in the past that spliced in a T connector so that it could be driven without being replaced but a larger piece of plastic inside, which means it split this wide open. Hopefully if I replace this hose, its not one big long piece? Theres a clamp about 3 inches south of this split which is sort of hard to reach, but which makes me think it ties in with some other hose, so its easier to be replaced.
