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Autopapyrus · Nissan March (K11, 2nd generation) 1.0 CG10DE (2000)
https://autopapyrus.com/guides/nissan/march/radiator-replacement/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Nissan March (K11, 2nd generation) 1.0 CG10DE (2000): Radiator Replacement

The radiator on the March K11 with the CG10DE engine sits at the front behind the grille and is attached at the top to the radiator support panel through two rubber mounts with brackets. The job is straightforward: drain the coolant, remove the hoses and the electric fan with its shroud, lift the radiator out, install the new one, and refill the system while bleeding the air. I do not list exact torque values or the coolant capacity for this version, to avoid giving you wrong figures.

Difficulty: Medium Time: 1.5-2.5 hours Steps: 14 Tools: Socket and wrench set 8-14 mm, flat-blade and Phillips screwdrivers, hose clamp pliers, drain container (5 L (5.3 qt) or larger), funnel, clean rags, jack with jack stands or an inspection pit

Part

  • 🔩 Engine cooling radiator assembly for Nissan March K11 1.0 (manual transmission or automatic transmission version; hoses and transmission oil cooler fittings may differ). Also needed: the correct type of coolant (antifreeze), upper and lower rubber radiator mounts if worn, hose clamps, and radiator hoses if necessary

Step by step

14 steps
  1. Park the car on level ground, shut off the engine and let it cool down completely. Open the expansion tank cap only when the engine is cold.
  2. Disconnect the negative battery terminal.
  3. Remove the lower engine undercover if one is installed. Place a drain container under the radiator.
  4. Open the drain plug at the bottom of the radiator (or remove the lower hose if there is no plug) and drain the coolant. For a more complete drain, remove the radiator cap or the expansion tank cap.
  5. Disconnect the electrical connector from the fan and the sensor (if one is mounted on the radiator). Remember where each wire goes.
  6. Loosen the clamps and remove the upper and lower hoses from the radiator. On an automatic transmission car, disconnect the transmission oil cooler lines from the radiator, place a container under them and plug the ends of the lines so you do not lose fluid.
  7. Remove the expansion tank hose from the radiator if it connects there.
  8. Unbolt the fan shroud with the electric fan and remove it together with the fan. The shroud is often held by several bolts or plastic clips.
  9. Remove the upper radiator mounting brackets. Carefully lift the radiator upward, taking care not to damage the radiator core or the A/C condenser (if equipped). If the car has air conditioning, do not disconnect its lines; just gently move the condenser aside.
  10. Transfer the rubber mounts, sensors and hose fittings from the old radiator to the new one (check that they are not cracked or corroded). It is better to replace the old mounts.
  11. Install the new radiator in reverse order: first onto the lower mounts, then secure the upper brackets. Tighten the bolts moderately without overtightening plastic parts (for the exact value, see the manufacturer's service manual).
  12. Install the shroud with the fan, connect the connectors, fit the hoses and tighten the clamps. Close the drain plug.
  13. Fill with coolant through the expansion tank up to the MAX mark. Start the engine with the cap open or bleed the air as follows: turn the heater to maximum, let the engine warm up until the fan switches on, and raise the engine speed slightly a few times.
  14. Let the engine cool down and top up the coolant to the proper level. Check for leaks at the hose joints and the drain plug. On an automatic transmission car, check the transmission fluid level and top up if necessary.

Common mistakes and warnings

  • Do not open the cap on a hot engine: steam and hot coolant can cause burns. Used coolant is toxic; drain it into a sealed container and dispose of it properly, and do not pour it onto the ground. For several days after the replacement, watch the level in the tank: if it drops, there is air left in the system or a leak. If the engine was overheating before the replacement, also check the thermostat and the water pump.