Radiator Hose Shredded | 1988 FJ62

[demimoore88]

At the end of a road trip in pretty mild temperatures (around 60F) the radiator hose connected to the engine exploded sending coolant everywhere. Completely shocked because I checked the coolant levels before we left and I have a 4 year old radiator with additional cooling block attached.

Anyone experience this?

Would replacing the hose solve this? Or is this a larger issue?

Any guidance greatly appreciated.

 

[OSS]

If it wasn’t a Toyota hose - that’s the reason. If it is, replace the pressure cap on the radiator regardless.

 

[toy_tek]

in your first picture - that radiator cap looks bent. Was it damaged? It might not be regulating pressure like it should. Regardless, if I were you I'd be thinking about replacing all the hoses. Don't forget the one under the AC compressor. Toyota or Gates, don't cheap out.

 

[BGarcia88FJ62]

Probably a combination of a Thermostat not opening and a faulty radiator cap.

 

[CruiserTrash]

The only time I've seen that on a 60 it was overheating and the cap failed to get rid of the excess pressure into the overflow bottle, so pressure kept building. I think the guy had completely removed his thermostat as well, in an effort to alleviate a constant high-temp issue. It was the lower radiator hose and it exploded just like that. That was somebody else's truck on a trail and fortunately one of us had a spare hose to get the guy rolling again pretty quick.

Time for a cooling system refresh. Replace all hoses (Toyota or Gates, there's a thread on here with a list of part numbers), get a new cap, use only the Toyota clamps (available new), and maybe replace the thermostat and o-ring if you don't know when they were last changed. May as well flush the system from the radiator and engine block while you're at it.

 

[3_puppies]

what is an additional cooling block?
were the temps in normal range before this happened?
were the hoses changed when the rad was done 4 years ago?