Question about 1998 Toyota Caldina GT-T
Temperature fluctuating Have had radiator cleaned, thermostat replaced, water hose to the turbo replaced. Fluctuates if I drive up a hill or if I drive for to long.
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Posted on Jan 02, 2017
The sensor for the fans is in the rad at the bottom. T-stat may be bad or the rad may be clogged. Cooling system needs attention.
Posted on Jun 22, 2009
Firstly, ensure you have the required 'mixture' of coolant/water (must have required coolant).
Second, I would recommend you re-test all the cooling system sensors again (make sure they're within specifications), in case a new one is faulty.
Third, ensure the new thermostat was of the correct temp setting (they all differ), so that it opens at the required time. Most cooling systems operate within 90 - 100degC.
Fourth, make sure the radiator (and associated hoses) aren't blocked.
If your temp gauge is reading higher than normal, but NOT in the danger zone...then this can be considered normal (especially if you've replaced with new components) and nothing to be concerned about.
However, if the temp gauge IS in the danger zone....then this suggests the coolant is not flowing through the cooling system properly.
If all above components test ok, then it's possible your water pump may not be pumping enough volume.
Posted on Aug 16, 2009
Testimonial: "I appreciate your help...Maybe I should just relace the water pump, that would be the last thing that I would need to replace."
it is the head gasket blown from the cyl to the water jacket ,a radiator specialist can test for combustion gases in the water to confirm this ,but that is what it is . "youdoit"
Posted on Oct 25, 2009
Testimonial: "compression test ok still looking"
Sorry to say there is most likely quite expensive damage to the valve train and pistons. A new cam belt can be installed and the motor rotated to see if it is turning freely after which you would do a compression check (lack of compression will indicate bent or broken valves). I've never seen a diesel break a belt and avoid damage, virtually always a catastrophic failure.
Posted on Dec 22, 2009
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