My radiator hose is collasped my truck doesnt seem to be hot or read any diffrent but its down now due to running rough so im cleaning some things but any ideas as to why it is ?

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I don't know why but interested. Have a friend that also has a collapsed hose. He is going to replace his but I want to know why it collapsed.

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03 RANGER EDGE 3.0
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Could just be an old hose, but also check your radiator cap and maybe replace it. Also flush the coolant system since you're taking the hoses off anyway. Deposit build up in the system can cause a collapsed hose.

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1997 Ford Ranger XLT, stepside
2.3L 2wd, 5-speed
All Stock

Hoses collapse when a vacuum develops upon cooling and the radiator cap is jammed shut or clogged.

When the coolant heats up, it expands. This is why the system is under pressure (about 12-14psi) when it is hot. If there is too much pressure, it will vent some pressure (and coolant) out the radiator cap into the tank. As it cools, it contracts creating a vacuum. This works the cap the other way and sucks coolant back in from the tank to fill in the vacuum.

If the cap can't let coolant get sucked back in, the vacuum will collapse the hoses. Remember, if you have a vacuum, that is due to a lack of coolant volume to begin with. So you have a bad cap and low coolant.

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FireRanger
2003 Edge 4.0 4wd

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ok so get a cap and add some coolant ok cu today i noticed it had blown back out and could the cap be the reason i lose small amounts of water over long period and what the bet yet cheapest way to clean it out?!?

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I had the same issue, take the line that goes from the top of the radiator to the coolant reservoir and rinse it out with some high pressure water. Mine was clogged with junk and after that the hose went back to normal. It's free and easy to do.

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95 Ranger Xlt Supercab 2x4 Auto 4.0 128k
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