The Toyota Landcruiser Owners Club

[cercag]

I just bought this Prado 2007 Right Hand Drive 3.0 Diesel Engine,

I realised car is not heating up till mid zone of gauge(except one time i was climbing hill but i didnt check heater that time) it stays at the first quarter all the time.

Because of this problem im not getting any hot air from the heaters. AC is working perfeclty fine and im getting a little warm air from the heaters.

I installed brand new Thermostat
Flushed the heater core twice
Coolant Level is Ok

After i done those, when the car in stationary heat goes up and there is hot air. When I start to drive it, heat goes down rapidly to first quarter almost in 100m drive.

Does anybody experienced this kind of problem before ?


Regards

[Google]

[TONYCY11]

The law of physics means the 1kd-ftv engine will reach full operating temp within 3 miles of driving here in Cyprus even if the thermostat was stuck in the open position  where the temps are around 30c at the moment, do you have a 1kd-ftv D4D in your 120 or is it a 1kz engine I could believe it not reaching full operating temp if you were in minus 30 c and even then within 15 miles it would be fully warm ,  it could be you have a faulty water temp sensor , as for the heater not giving hot air could be lack of coolant going through it due to a air lock  if the previous owner or you did not leave the heater temp in the car in the hottest setting before draining and filling the coolant or undoing the hose where the coolant comes OUT of the heater matrix when warm to see if the heater matrix has got coolant in and not an air lock or crud stopping coolant going through it ,   does the engine feel hot when you lift the bonnet after you have driven the car for 5 miles , was the coolant clean or dirty or contaminated and at the right level before you yourself drained the coolant incase of head gasket or head problems that the 1kz engine can be known to have . The low entry 120s in Cyprus like the commercial versions or some import versions or exUN 120s have the 1kz engine and not the D4D 1kd-ftv engine .

[karl2000]

Expert advice from Tony as ever!

+ 1 for bleeding and topping up the cooling system

[Tractionman]

What happens if you press the pre heat switch ?

[Beekeeper]

A long shot but is the viscous coupled fan seized?

[ALPrado]

[cercag]

I took the car to a mechanic and i have been told that , heater sensor have a wire problem from inside and heater water pump have a slight problem. I will try those to and update you guys.

Thanks for the help

[cercag]

[cercag]

[TONYCY11]