IF IT WAS NOT OVERHEATING BEFORE THE HOSE WAS REPLACED -- MORE THAN LIKELY YOU HAVE AIR POCKETS TRAPPED IN YOUR COOLING SYSTEM
lower radiator hose has spring inside to keep it from being sucked closed, spring may have caroded or shifted, replace lower hose should solve this problem
It changes the freezing and boiling point.
It would definitely help keep the engine from overheating.
Under normal circumstances it will have some pressure just less than the bottom hose. The bottom hose is directly pressurized by the water pump while the upper hose acts as a return hose to keep the water flowing through the engine block. If there is no pressure you could be low on radiator fluid (water/anti freeze mixed) or have a thermostat stuck open.
We had the same problem with our LHS. We first replaced the thermostate and it still happened. So we keep looking and the lower radiator hose was colapsing. You might check the hoses after you replace the thermostate. Hope this helps.
Low coolant? system "airbound"? Hoses collapsing under pressure clutch or cooling fan not working? Defective radiator cap?
vapour pressure lowering
You bet! keep that baby full at all times
Remove the bottom radiator hose from your 1995 Chevy Lumina radiator. Put a water hose in the top of the radiator. Allow the water hose to run. Keep the water running until clear water runs out of the bottom of the radiator.
There are other things at play to keep your engine from overheating and they are cheaper than radiators. First make sure the radiator cooling fan is coming on. Cost to do this "Free" Next you may want to replace the thermostat. It may be stuck closed or partially closed. Cost about $8 and your time. Either of these two will cause overheating and are more likely to be the cause than the radiator. A collapsed radiator hose will cause overheating also but rare. Hope this helps
I had a similar experience with my 68 Fleetwood Series 75 Limo. The problem was a plugged radiator. Cadillac uses a 4-row radiator for these heavy duty vehicles just to keep them from overheating. Before I replaced the radiator, I would make sure the lower radiator hose is not weak. A weak lower hose can "suck closed" starving the water pump for water and resulting in over heating. Make sure the lower hose has a spring in it. This spring is there to prevent the hose from getting sucked closed under normal conditions. There is a powerful suction created by the water pump and can collapse the lower hose without the spring. Baring problems with the hoses (and you have replaced other possible causes), I would suspect the radiator is getting old and plugged up. I did not have any success with radiator cleaning as it was so old and weak, it had to be replaced. Overheating is a thing of the past now.
i had a similar problem on a 97 ford taurus, not overheating but it would boil out the resivior, changed the theromstat, no help, took of the water pump and the impeller was rusted, almost gone, replaced it and it works good, also before changing it, the antifreeze was rust colored. hope this helps.