Radiator hose dry rotted causing the engine to overheat?

TIM LEE

MEMBER
2008 JEEP GRAND CHEROKEE
4.7L
V8
4WD
AUTOMATIC
152,391 MILES

My radiator hose appears dry rotted. Causing hot antifreeze to explode all over my engine and battery and I’m going to assume my throttle body considering the throttle control light came on. I did not notice the issue until I was driving and noticed my car overheating. I let the car cool down and it still starts back up. What am I looking at here in damages or if this is even worth fixing.

Monday, June 19th, 2023 AT 5:13 AM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,052 POSTS

Hi,

It sounds like all you need is a new radiator hose and coolant, certainly worth repairing.

Which hose was it that failed? If you want, take a few pics of it and upload it for me to see. That way I'll know which one to get you directions for.

Also, here is a link you may find helpful, take a look through it and let me know if you have questions:

https://www.2carpros.com/articles/replace-radiator-hoses

Let me know.

Take care,

Joe

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Monday, June 19th, 2023 AT 10:14 PM

TIM LEE

MEMBER
4 POSTS

So, it was the upper radiator hose that leaked out every day. I replaced the bottom one as well just to be safe. It ran. It did not overheat. I’m thinking I did not add enough coolant because I went to start it gin and it immediately stalled out on me.

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Tuesday, June 20th, 2023 AT 1:07 PM

JACOBANDNICKOLAS

MECHANIC
110,052 POSTS

Hi,

Tim, I think it was a good idea to replace the lower one as well. However, the stalling is likely something other. That shouldn't happen due to low coolant. When the engine cools, check to make sure the system is full. Never open the cooling system when the engine is hot.

Once it is cool, open the radiator cap. Next, on the top of the thermostat housing is a bleeder for the cooling system. See pics below. Remove that and slowly add coolant to the radiator until coolant begins coming from the bleeder. At that point, close the bleeder and top off if needed. See directions below.

Let me know if this helps.

Take care,

Joe

See pics below.

Images (Click to make bigger)