rizon

Good Afternoon,
My 2004 Jeep Grand Cherokee 4.7L V8 Limited is overheating. It was leaking before so I replaced the thermostat and water pump. I also ended up flushing it and replacing the radiator because it was still overheating and the mechanic said I needed a new one. It is still overheating, although not as bad. It will get a little bit above 210 and the fan will kick in, turning on the heat and sitting still will bring the temperature down. Any ideas? Thank you.

juvius

Make sure you have all the air out of the system. Can you tell if the thermostat is opening?

rizon

How do I make sure I have all the air out of the system? I took off the bleed plug when I was filling it with coolant. I think it's opening because I had to replace the thermostat twice, the first one was the wrong one, and since I put in the new one it doesn't get as hot as it did before, it goes a little above 210 and kind of sits there with the fan running pretty high. Also, I was looking at the coolant that my buddy put in and it wasn't premixed, he put maybe a gallon of it in, when I realized that I put about a half a gallon of water in and then the rest with 50/50. Could that cause this?

Robmaroli

I have a 2004 Jeep grand Cherokee . It was overheating when in park or idling. Replaced the thermostat and that didn't work. Ended up taking it to a mechanic and it was the fan. It wouldn't kick to a higher speed. The mechanic replaced the fan and motor. Overheating problem solved