In order to replace a Mustang radiator, you will first need some supplies. You need to have the new radiator, a container for the old coolant, a Phillips head screwdriver, a 10m socket wrench, channel locks, crescent wrenches, coolant, and flush treatment.
When picking out a new Mustang radiator, there are different ones to choose from and there is a huge price range as well. Don’t just go with the least expensive one. Picking a radiator can be a bit of an art since you have to pick the bad from the good. A bad radiator will be leaking the minute you install it. It’s best to stick with a brand name radiator that has earned respect in the industry. One thing to keep in mind when purchasing a radiator is the transmission type. A radiator for a manual transmission will be different than what is needed for an automatic car. Some radiators can be universal, but not all will, so keep this in mind.
Steps to Change the Radiator
In order to change the radiator, start by draining the radiator into a milk jug or another container. Twist the spigot on the bottom of the radiator by hand and remove the cap. The process will be universal for every make of car, including a Mustang. Newer Mustangs may have a plastic piece on top that you need to remove first.
Then remove the transmission coolant for cars with an automatic transmission. Use one wrench to hold the line still and then another to loosen the nut.
Disconnect the fan shroud. Depending on the year of your Mustang, you may need to use a socket wrench or a Phillips head screwdriver. If you have a Mustang made after 1994 then you will need to unbolt the overflow tank bracket first.
Next, pull the cooling fan out. For vehicles made between 1964 and 1979, the fan will come out in one piece. For a later model, you will have to unplug wiring and pull loose the tabs in order to remove it.
Use a pair of channel locks to detach the hose clamps and then drain the coolant.
Unbolt the radiator brackets. With an older model, you can pull the radiator out of the engine. For a newer model, you will need to disconnect the wires before you can remove the radiator.
The last step is to then place the new radiator in. Replace the support bracket and then replace what you have removed in reverse order. Use a bottle of flush treatment on a new radiator and then replace the coolant. Be sure to let the car idle for five to 10 minutes with the radiator cap removed. When the air bubbles out, top off the coolant.