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I have a 2000 Dodge Durango SLT 4x4 5.9L with Towing Package. Two years ago I had a radiator leak and had to have it replaced. When I did I have both radiators replaced (The main for the engine core and the smaller one for the transmission. After that, I had absolutely no problem with my engine until about a week ago. I noticed the engine getting hot while doing city driving. I would rev the engine a couple times and the temp would go down to normal (below middle of the gauge). Now it won't even go down after reving. I have stop, let it cool, then drive until it gets hot. My milegage is 128,000.
I opened the hood and noticed that the upper hose assembly (the one with a T connector with the Radiator Cap) was leaking. It looks like the T or the hose has failed. I just bought an upper assembly and will replace it, but I fear I'm only fixing a symptom and not the probelm.
I have really liked this forun as it gave me a lot of ideas. First will be to change the Radiator Cap (apparently this little $6 item is often the cause of many over heaing problems if it does not properly seal.
I am also going to do the 3 quick on/off clicks on the ignition to get the LED code in the odometer area to see if it leads me to something.
Beyond that, I have good fluid level in the radiator and it is a nice green color (no dark color from rust etc).
sdout or anyone else with experience with this issue:
Do any of you have any other suggestions?
p.s. I am assuming the thermostat can be found just under the connection of the upper hose assembly goes into the engine block. Is this correct?
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