I have a hose that goes from the radiator to somewhere on my Ford windstar.
One hose goes to water pump,the other to the thermostat housing with clamps holding it tightly with anti freeze running wild on the inside like a pack of Yorkies.
SOURCE: Heater Vacuum hose disconnected No front heat and ticking noise
That path begins at the intake manifold which is the only source of vacuum for those controls. In all systems I have seen, there is a bottle or canister under the hood that acts as a reserve source for all vacuum-operated devices since the level of vacuum varies greatly depending on whether the engine is running free or lugging. Tracing backward might not be fun but is possible.
SOURCE: I broke the hex head on radiator drain plug in 98 ford Windstar
ha . you will have to dran it from the bottem.you will have to pull the hose. whitch is on the right side if i rember correctly. it would be a good i dear to get the van up on a lift or car ramp ok . good luck
SOURCE: lower radiator hose connecting tube to water pump.
remove the radiator hose remove the two bolts that hold the tube on and buy new tube and replace is in reverse order.
SOURCE: My rig is a 1991
from your disciption i think your talking about the transmission cooler.it may look like a
small radiator with 2 lines going to trans & 2 to radiator
hope this helps
good luck
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