Question about 1999 Nissan Pathfinder

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1990 Nissan Terrano Overheating. Need thermostat operating temps

Hi, I have a 1990 Nissan Terrano, imported to Australia from Japan. The thermostat is set for the colder Japanese temeratures and consequently in the hotter Australian climate it boils whenever a load is put on the vehicle.
What I need is to know what the thermostat operating temps are for both the Japanese and Australian (pathfinder) thermostats are please.

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  • donofbunbury
    donofbunbury Apr 21, 2009

    Thanks adamarenivar, Yeah, I got a new thermostat from the local Nissan dealer with the lowest operating temp (82 deg C) and put it in last night. When I took out the old one it had the same temp stamped on it, so maybe that might not be my problem, now I will definately start to look at fans etc. Especially what temp my thermo fan starts up at.

  • donofbunbury
    donofbunbury Apr 15, 2010

    I agree with the solutions given but would lkie to add more. The problem with Terrano's is that for most of the radiator grill space it has 3 radiators one behind the other. First it has the oil cooler radiator, then the air conditioning radiator, then the engine cooling radiator. All of these have a grill network to allow air to flow over the cooling straws that carry various coolants, i.e. oil. coolant gas and finally water. If any one of these grill networks get even a slight amount of debris into them then air will NOT flow to the 3rd Radiator, which in my opinion is the major one, and it's that one that stops your engine from going the same way that mine did, up in smoke.

    Take your vehicle to a radiator specialist and have all 3 radiator grills cleaned out, not only the outside grills of the engine radiator but the interior of that one as well.

    Ask the radiator specialist if it is possible for him to make you up a seperate oil cooler or at least add an electric fan, one that is manually switched on/off. Put that on the opposite side of the front grill of your vehicle to that which has the collection of radiators blocking air access to your engine radiator.

    A friend put a stake through his oil cooler once when out doing some 4WD'ing. He limped into the nearest town and rigged up a temporary oil cooler which was a copper pipe connected to the oil (out) line, looped around the front of the front bumper bar, held off the plastic and held into place with plumbers clips and connected back into the oil (in)line with utilux clips. That was 6 years ago, he still had it there when he sold the vehicle 2 years ago. He never had an overheating problem since then.



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Yeah but check the coolant and your fans as well

Posted on Apr 20, 2009


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