Thermostat Hose

Today while driving round town, the hose attached to the right of my thermostat blew off. Didn’t notice anything until the truck shut off by itself. No increase in temp so I pulled into a lot. Put the hose back on with the clamp. And filled up the completely empty radiator and reservoir. My question is, why did this happen, truck did not overheat and runs like a charm. Could it be that the clamp to the hose was never really fully on and slowly over the last year wiggled its way over? I saw on the detached hose, the clamp was about 1” and a half away from where it should have on the hose. Anyways drove home completely fine, just wanna know if there’s any common issues that would cause this

 

Any common phenomenon to why that happened? Id love to hear if so, too!
But I’ve heard stories and seen clamps that loosen up and cause coolant spillage. My guess-
The worm drive hose clamps can appear to loosen. What’s usually happening is the hoses shrink slightly over a long period of time and the clamps stay tightened the same. We can’t put constant tension clamps everywhere- but that is why they are used in other applications. Also possible that whoever worked on it last thought it was snug but could’ve tightened it more. Really comes down to how often and who’s handling it & the quality of the clamps and hoses. Doesn’t hurt to check your other worm style hose clamps for snugness while you’re in there

 

The truck shut off by itself all the coolant leaked out you never took notice ??

I had hoses fail that caused the clamp to come loose.

As soon as the sending unit is no longer in the coolant it is pretty much useless .

I see a head gasket in your future.

Could the clamp have been unscrewed on purpose ?? Make anyone mad lately??

 

Im 90% sure the truck didn’t overheat. Soon as the truck stalled itself, I popped the hood and was able to mess around near the headers and block just fine. So pretty sure all the coolant dumped out of the hose pretty quick. And it wasn’t the screw type of hose clamp, it was a spring clamp.

 

So the engine was soaked in coolant and shut off?? The only other way was it got hot!

How are far had you drove possible the coolant leaked while parked and you never noticed if it was raining?

The spring type clamps very seldom move unless it was never installed correct and you were really lucky.

Best of luck

 

Prior to this drive no leaks at all. It was a ten minute ish drive in like 38°F. Pretty sure now that I recall I heard a noise like 10 seconds before the truck shut of. Probably was the hose blowing off and coolant getting sprayed all along the drive side of engine bay. It was raining so I couldn’t find the puddle where it blew off, but Some was definitely still dripping when I pulled to park. Truck still runs perfect. I’d image because the clamp was a PITA to get back on, whoever touched it last just didn’t bother doing it right and slowly crept its way off. I just got an ultra gauge set up, so I’ll be watching the temp really closely