That the engine is cool.
There is a plastic box mounted to the top center of the engine, right above the water pump. Follow the hoses from the radiator back and you'll see it. You must disassemble this box to get to the thermostat. NOTE: coolant can be VERY VERY hot. Wait overnight before replacing, also note the direction of the thermostat before removing to ensure proper operation after replacement.
The safety must be in the on position
Stabilization and security of load
The radiator drain plug is located on the bottom of the radiator on the driver's side. This plug must be removed before attempting to change the radiator fluid.
Before changing the radiator on a 2001 Pontiac Montana the coolant must first be drained. After the drain remove the radiator mounts, fans, and hoses. Pull the radiator upwards.
After removing and reinstalling the transmission in a 2006 Sienna, the transmission must be reprogrammed to ensure it shifts properly. This is done by connecting an automotive computer to the vehicle and resetting the parameters.
If the hoses are all tight, Then the radiator must be leaking. REPLACE RADIATOR
The radiator support on a 91 Accord is a welded on part. Removal requires removing the bumper, headlamps, and fenders. Once these parts are out of the way you must drill out the spot welds that hold it to the frame rails and apron. The new piece must them be fitted and welded in place. On a 91 Accord (and nearly every other honda) the radiator support is a structural piece and should be replaced under the supervision of a trained profesional.
CAUTION: When removing the radiator or A/C condenser for any reason, note the location of all radiator-to-body and radiator-to-A/C condenser rubber air seals (Air Seals - Typical). These are used at the top, bottom and sides of the radiator and A/C condenser. To prevent overheating, these seals must be installed to their original positions. Disconnect the negative battery cable at battery. Drain coolant from radiator (Refer to 7 - COOLING - STANDARD PROCEDURE) . Remove the front grill (Refer to 23 - BODY/EXTERIOR/GRILLE - REMOVAL). Remove the cooling fan from the engine, if equipped. Remove the two radiator mounting bolts. Disconnect both transmission cooler lines from radiator. Disconnect the connector for the electric fan. Disconnect the power steering cooler line from cooler. Disconnect the radiator upper and lower hoses. Disconnect the overflow hose from radiator. The lower part of radiator is equipped with two alignment dowel pins (Radiator Alignment Dowels - Typical). They are located on the bottom of radiator tank and fit into rubber grommets. These rubber grommets are pressed into the radiator lower crossmember. WARNING: THE AIR CONDITIONING SYSTEM (IF EQUIPPED) IS UNDER A CONSTANT PRESSURE EVEN WITH THE ENGINE OFF. REFER TO REFRIGERANT WARNINGS IN, HEATING AND AIR CONDITIONING BEFORE HANDLING ANY AIR CONDITIONING COMPONENT. NOTE: The radiator and radiator cooling fan can be removed as an assembly. It is not necessary to remove the cooling fan before removing or installing the radiator. Gently lift up and remove radiator from vehicle. Be careful not to scrape the radiator fins against any other component. Also be careful not to disturb the air conditioning condenser (if equipped).
Most of these do not have one.You must remove the lower radiator hose to drain the radiator.
There is no radiator cap, you must fill through the coolant reservoir.
In front of the radiator. You will have to completely drain the cooling syystem, when it is cold, remove the fans and radiator, then you can access the condensor. You must have the A/C system evacuated before exposing the condensor to the atmosphere.