You still need to flush the engine block and heater core.
One flushes a radiator by draining the radiator, rincing the radiator, and then by adding a new coolant. One should remember that the drained coolant is toxic.
Purchase a flush kit and new coolant from your local auto parts store and follow the directions in the kit.
To actually "flush" the coolant in this vehicle you will need a flush machine. To do that we did at the dealership, drain the radiator (you need a 1/4 inch ratchet and 1 inch extension) then use a vacuum fill too to fill with new coolant.
radiator core could be plugged, cap on the coolant reservoir is not maintaining proper pressure. is water pump working properly!! I would flush system and see if this works, buy a good radiator flush at any auto parts place. you can flush the radiator by adding flush to coolant tank, then put a garden hose in tank and back flush it. as long as you have a new thermostat in, you do not need to take it out!! flush until the radiator is clear. when done add new coolant. I did this to mine when changing intake manifold gasket. and it does not over heat it is fine!! HOPE THIS HELPS YA OUT.
remove thermostat housing and lower radiator hose from block flush through block.
the problem you arehaving isn't with the transmission its with your radiator it has a crack in the side where transmission lines hook to you need a new radiator and id also do a complete transmission flush to explain whats it is your coolant is mixing with the transmission fluid in the radiator replace your radiator and you problems are gone after you flush the transmission that is id do that before i put the new radiator in if i was you
Get a new radiator or flush it out?
possibly air intake filter, and check radiator water and coolant if it is dirty drain flush and clean the radiator and put in new coolant.
You need a new radiator if you have trans fluid in the radiator. Getting trans fluid in the radiator isn't such a big deal...just change the radiator.....the worrisome parts is getting coolant in the transmission. The radiator has a transmission cooler built in and it is separated with a wall of aluminum - the coolant and trans sides should never mix. First! You need to drain and remove the radiator and replace it with new fluid. If you got trans fluid in the radiator, it very likely means you got the inverse....coolant in the transmission. You also need to flush and drain the transmission. Also, you need to flush the transmission cooler lines out for any coolant. Coolant in the trans is often the death of a transmission. Make sure you use the right fluid in the trans. That vehicle takes Mercon V fluid - don't put anything else in there or you will have problems potentially.
Nope, a dealer said my radiator was "gone", and that transmission fluid may have mixed with the coolant, and they have to flush the tranny (180 dollars worth of tranny fluid) to ensure it is ok, add a new radiator, coolant, and a transmission filter, plus labor and you get 1100 worth of work-is this accurate? Yikes... yes a tranny flush is expensive (@ between $150 and $200). Plus, a new radiator. So, I'm afraid it's possible. But, they're killing you with labor costs. Just make sure that your car can handle a flush. In some cases, mostly in older vehicles, a true flush on the transmission can cause it to lock up, rendering it useless. I'm just taking a guess here, as I don't know what your driving, so I can't even guess how much a new radiator is for your car.
To flush the radiator in a 1999 Mercury Cougar V6, first make sure the engine is cool. Put a bucket under the drain plug on the radiator, remove the cap and open the plug. Close the plug, fill the radiator with distilled water, then drain again. Repeat until the water comes out clean. Tighten the plug and fill the radiator with new coolant. Run the engine for about 10 minutes with the heater on high, then check the coolant level and add more as needed to complete the process.
Begin by removing the bottom radiator hose. Allow the old coolant to drain out. Replace the hose to its original position. Fill the radiator with new coolant.