Overheating?

Hi,

What you described with the heater makes me question if there is air in the system. Do me a favor, take a look at this portion of the coolant refill procedure, and see if it helps.

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Caution:
Refer to Fastener Caution See: Vehicle > Technician Safety Information > Fastener Caution.

1. Tighten the radiator drain cock to 2 Nm (18 lb in).

Pic 1

2. Install the water pump drain plug and tighten to 10 Nm (89 lb in) if removed during the draining process.

3. Lower the vehicle.

4. Remove radiator inlet hose at the engine. Refer to Radiator Inlet Hose Replacement (LEA) See: Radiator Hose > Removal and Replacement Radiator Inlet Hose Replacement (LF1 or LFW) See: Radiator Hose > Removal and Replacement

Note:
Use a 50/50 mixture of DEX-COOL antifreeze and clean drinkable water.

5. Slowly add mixture of 50/50 DEX-COOL antifreeze and clean, drinkable water to the engine and radiator. Fill the cooling system as indicated below:

* When the engine block is not drained, add 1.75 liters (1.85 qts) to the radiator through the radiator inlet hose.

* When the engine block is drained, add 2.0 liters (2.1 qts) to the engine, then add 1.75 liters (1.85 qts) to the radiator through the radiator inlet hose.

6. Install the radiator inlet hose at the engine. Refer to Radiator Inlet Hose Replacement (LEA) See: Radiator Hose > Removal and Replacement Radiator Inlet Hose Replacement (LF1 or LFW) See: Radiator Hose > Removal and Replacement

7. Slowly add mixture of 50/50 DEX-COOL antifreeze and clean, drinkable water to the surge tank until the coolant level reaches the base of the radiator surge tank. Refer to Approximate Fluid Capacities See: Fluids

8. Start the engine and check for leaks.

9. Run the engine and cycle the vehicle from idle to 3,000 RPM in 30 second intervals until the engine cooling fan comes ON, the engine cooling fan turns ON at approximately 102°C (216°F). Repeat this process twice before the engine is turned OFF.

10. Return the engine to idle, and idle for 30 seconds, then turn the engine OFF.

11. Allow the vehicle to cool, before adding additional coolant.

Note:
The level in the surge tank will return into the cold fill range once the vehicle cools.

12. Add additional coolant to the surge tank until the level is approximately 13 mm (0.5 in) above the surge tank seam.

13. Install the coolant surge tank cap.

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When you refilled the coolant, did you use dexcool? Is there any chance that the original coolant (dex-cool) was mixed with a different type of engine coolant?

Let me know if this helps.

Joe