Question about Cars & Trucks
I have heard of cases where there is enough coolant in the plastic bottle (reservoir) but, there is not enough coolant in the radiator itself. When the car is COLD (important - hot water and steam will burn you!!), remove the radiator cap and fill the radiator itself with coolant. In the COLD condition, remove the radiator cap, then start the car and while the engine is running, fill the radiator with coolant until the coolant is stagnant at the filler spout, then quickly replace the cap otherwise the engine will heat the coolant up and will start blowing out the top! If this doesn't fix the problem, replace your radiator cap and if that doesn't help either, replace the thermostat. Lastly but not likely, it might be a problem with the temperature sensor.
Posted on Apr 27, 2015
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Posted on Jan 02, 2017
SOURCE: Radiator fan problem
Call up the dealer and ask what commands the fans to come on once the car reaches operating temp, on alot of imports, there is a fan control box of some sort that actually sends the sig to the fans to come on.
If it's the temp sensor and the computer tells the fans to come on you could be looking at a faulty computer.
This would deffinetly be worth taking to the dealer to diagnose so that you don't keep wasting your time and money chasing a ghost.
Posted on Sep 02, 2008
SOURCE: Intermitant temperature
Check to make sure your thermostat works right by monitoring the warming up of your engine. With a completely cold engine, start and run the engine for a few minutes, then put your hand on the top radiator hose to monitor if and when it gets warm as the thermostat opens more and more and note the gauge reading( if it works) the top radiator hose should be unbearably hot within 5-8 minutes. If the therm. opens right it should close right aswell, staying open a little while eventhough the radiator may have cooled may be what you are experiencing causing the rapid cooling and is nothing to worry about. The Hose should not get warm very soon after starting the engine. Regarding you gauge, lets take one step at a time, verify proper op. or the therm.
Posted on Jan 20, 2009
If all of the things you replaced are working fine I am going to say double check the thermostat. Also make sure your fan is engaging at temp. You cam check by running till warm and then running the AC. If the car does not overheat with the AC on then your fan is not running under normal conditions (with AC off) This can be caused by a couple of different things depending on how the fan is set up. I am not a nissan expert
Posted on Apr 29, 2009
Check out clarks-garage.com he has a complete troubleshooting guide for your cooling system along with a schematic. In short, check the low speed resistor on the firewall. Should be around one ohm.
Posted on Oct 10, 2009
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