I in the process of changing the bottom radiator hose on my 95 with air conditioning. On the new hose there is no spring in the hose but there is on my old one. Does that matter?

 

Yes, the spring needs to be there so the hose does not collapse under pressure

 

They say the new hoses do not need the spring anymore, but seeing you have one in your old hose why not pull it out clean the crud off it and stick it
in the new hose.

 

^^This^^
My 98 hasn't had a spring in the lower hose since I bought it 6 years ago and and changed all the hoses then. I have never had a problem with the hose collapsing on me.

 

Same here, I recently changed out all my hoses and they no longer have the spring. No problems here!

 

No, they do not collapse like that.

 

My mistake, thats what I get for believing everything I read on here
Why is the spring in there then? Iv heared thats it's purpose several times.
Its factory so there's got to be a reason

 

I'm curious as to how a pressurized hose will collapse? No spring in our new hose.

 

Lower in suction. If in doubt transfer the spring to the new hose. Call it a performance upgrade to the fresh hose.

 

That's what I wanna know lol
Iv heard it on here several times, why is the spring in there in the first place then?

 

Stolen from an old post-

Original equipment molded radiator hoses often were equipped with a coil inside them. Some refer to this coil as a spring, but it isn't really a spring. Actually just a piece of thin metal rod that has been twisted, it was designed to facilitate the installation of coolant on the assembly line, and nothing more.

When the cooling system of a car is completely drained, or in the case of a brand new car under construction, never had coolant in it, there is a considerable amount of air in the passage ways. Normally, when filling up the cooling system, you start the car to circulate the coolant, displace trapped air, and then top it off. On the assembly line, this wasn't feasible, so air in the cooling system was evacuated by essentially pulling a vacuum on it. This also had the added advantage of speeding up the introduction of the coolant mixture to the cooling system as well. The coil in the lower radiator hose prevented the hose from collapsing under this higher than normal vacuum.

Once the vehicle left the factory, the coil served no further purpose. This is why replacement hoses usually do not have a coil in them. Most cooling systems operate at 12-15 P.S.I., which is controlled by the radiator cap. This is enough pressure to allow a normally functioning cooling system to operate efficiently, yet not enough to cause collapsed hoses or leaks in seals if they're in good condition. If the lower radiator hose collapses, it is normally due to a fault somewhere else in the system, and is not necessarily indicative of a bad hose, although an old hose certainly might be susceptible to collapse due to age. Normally, if the hose is in good condition but collapsing and blocking the flow of coolant, the radiator cap is bad or there's a blockage somewhere else causing pressure to build up in the cooling system.

As vehicles with original hoses began to age, the coil would sometimes begin to corrode and deteriorate, circulating tiny pieces of metal throughout the cooling system. We'll leave it to your imagination what this did to water pumps and thermostats.

 

Thank you! Learn something new every day

To op: sorry for the inaccurate information lol

 

Excellent.....this should be a sticky. The "spring in the hose" is a myth that just keeps on being perpetuated on the Internet.

The only time I've seen a rad hose collapsed is on a cold motor that's not running. The fault was a bad rad cap not allowing coolant to return to the rad, motor off and cooling down. Shortly after starting the motor, the hose would return to it's normal shape due to pressure building in the system.

 

In actuality the coil is more of a liability than an asset. Its just one other source for introducing rust into the cooling system.