Landruiser HJ60 Diesel overheating in hot summers of 45C

Submitted: Monday, Jun 18, 2012 at 13:37
ThreadID: 96339 Views:9143 Replies:14 FollowUps:10
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I have heating issues with my Landcruiser HJ60 1986 with 2H diesel engine and noticed this as I entered the hot weather territory while long hours driving with speed ranging from 80 to 110km/hr and weather temperatures ranging from 45C to 48C and temperature gauge reached to the very top in white zone but when I switched off AC the temperature dropped by another say 10%, but when climbing the long steep hill had to stop several times due to engine overheating. Whenever engine would overheat I stopped for number of intervals and when opened radiator cap there was a lot of hot gas and also noted some rusty water color and after a while poured water on engine start mode but only a small quantity of water went in. On several occasions I used to also pout water on the exterior top of radiator on engine start that way the temperature gauge would come down drastically. At times noticed mild spikes on the gauge ranging from 75% to 95% within the white temperature level. Also noticed there was so much pressure in radiator there was water flowing out from the radiator to the coolant box , I have new original radiator cap. On the next day morning I had to pour almost 2 liters of water in radiator.

However as I entered into the cooler weather in 30sC, the temperature became normal at 50% level even with AC on.

Would someone please let me know how can I resolve this.
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