Question about Cars & Trucks
Replaced water pump and thermostat. Upper hose is hot, lower hose is cool.
First are you sure the thermostat was installed correctly if so you have to have a blockage it could be that your new thermostat is bad it dose happen but again you sure the t. stat is not up side down dose your heat blow hot? probly not if lower hose is cool only thing left is the radeator is pluged look in it at cap do all the ports look open its posable your air locked you should have a bleader valve may be on or neat t.stat or on intake open itand run you can leave rad cap off or louse if at 200% its not sirculating i would pull t. stat out and run it with out one just as a test
Posted on Apr 19, 2013
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Posted on Jan 02, 2017
the upper hose is suppose to be hot this lets you know that the thermostat is working like it should. if it were cold that would indicate that the thermostat was bad. i would say that it's the water pump because your not getting the circulation if it were a blockage your upper hose would still be cool as well.. hope this helps please rate...thanks
Posted on Sep 05, 2008
I recommend flushing the radiator thoroughly if not done recently. there seems to be some sort of blockage in the radiator at this time. if you get lots of metal fragments that are flushed out during this flush, i will then recommend a rebuild on the radiator or replacement of the radiator. make sure the cooling fans are cycling on time as well.
Posted on May 21, 2009
SOURCE: Ok, g35 coupe 06,52k miles Had
Heres a couple of things you can check. Start your car and remove the radiator cap,(before it gets hot mind you) when it reaches norm operating temp, look inside radiator to see if water is circulating. If its not moving, its a bad water pump. Also, youre hoses should never collapse, if they collapse when they get hot maybe you need new hoses? Finally, if those dont work, flush out your radiator. Open the bottom cockpit and use a garden hose and let it flush out the system while the car is running, about 10 mins should do the trick. If the radiator looks clean inside then it doesnt need flushed.
Posted on Jan 04, 2011
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