Overheating fix FYI

[04sentra]

I've been helped by people on this forum so when I had a overheating issue I read several threads on here about possible fixes. I fixed my problem so thought i'd post what I did to hopefully help out someone with a similar problem;

I was driving to work last week and noticed my temp guage going up to Hot them coming back down when the fans kicked on. This went on for several miles so I pulled over. I opened the hood and found the top radiator hose very hot and the bottom one cold. The heater hoses were the same way, one hot, one cold. I let the car cool then drove it back home watching the guage go up and down the whole way home.

I got on this forum and after reading several threads I decided that there was air in my cooling system. I decided to replace the thermostat while I had the system open. After replacing the thermostat I parked my car with the front end about 10" higher than the back end. I topped the radiator off with 50/50, put the cap on and ran the engine at about 2,000 RPM's with the heater on high for 5 minutes. Shut it down and opened the radiator cap, got plenty of air bubbling out, squeezed the bottom radiator hose and got even more air out. Topped of radiator with more 50/50 then ran engine again for 5 minutes with heater on high. Shut off and opened radiator cap, little more air came out, squeezed the lower hose again, topped off and ran engine again, plenty of hot air coming out of heater. After shutting down again checked hoses, both radiator hoses hot, both heater hoses hot. No more air came out of radiator. Been running fine for a week with no more overheating.
Just wanted to post this to hopefully help someone else who's having overheating problems.

[wmw]

Originally Posted by 04sentra

I've been helped by people on this forum so when I had a overheating issue I read several threads on here about possible fixes. I fixed my problem so thought i'd post what I did to hopefully help out someone with a similar problem;

I was driving to work last week and noticed my temp guage going up to Hot them coming back down when the fans kicked on. This went on for several miles so I pulled over. I opened the hood and found the top radiator hose very hot and the bottom one cold. The heater hoses were the same way, one hot, one cold. I let the car cool then drove it back home watching the guage go up and down the whole way home.

I got on this forum and after reading several threads I decided that there was air in my cooling system. I decided to replace the thermostat while I had the system open. After replacing the thermostat I parked my car with the front end about 10" higher than the back end. I topped the radiator off with 50/50, put the cap on and ran the engine at about 2,000 RPM's with the heater on high for 5 minutes. Shut it down and opened the radiator cap, got plenty of air bubbling out, squeezed the bottom radiator hose and got even more air out. Topped of radiator with more 50/50 then ran engine again for 5 minutes with heater on high. Shut off and opened radiator cap, little more air came out, squeezed the lower hose again, topped off and ran engine again, plenty of hot air coming out of heater. After shutting down again checked hoses, both radiator hoses hot, both heater hoses hot. No more air came out of radiator. Been running fine for a week with no more overheating.
Just wanted to post this to hopefully help someone else who's having overheating problems.

I did this over and over until I finally gave up and took mine to the dealer (choke). I would get hot air sitting in the garage and I did the same way you did but then after going a few miles down the road the heat would cut off once again and the coolant would back up into the overflow bottle. I told the dealer to only get the air out of the system and then we would decide if the water pump or the head gasket needs investigating. Waiting to hear from them. 2002 Nissan Sentra 1.8