Overheating and seems to be leaking from ET cap

[Dr Dynamite]

My car has 267k miles and the thermostat, all radiator hoses have been replaced in the last month, everything was fine till earlier this week my car would have a puddle underneath the radiator. I topped off the fluid a couple times and today it's started steaming under the hoo ld and then my temperature gauge was too high..... any advice on what it could be?

Thanks yall

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[Karl Lazlo]

With leaks, I would look at the usual suspects: water pump, expansion tank and/or radiator.

Love seeing high mile cars!

[slater]

head gasket? if it's leaking from the ET cap, you've got some higher-than-normal pressures in there. someone correct me if i'm mistaken.

and +1 on the high miles! love it. my friend who i sold my black ZHP coupe to is up to 405K KMs (roughly 251K miles!). running great too!

[Scott ZHP]

When was the water pump last replaced? How old is the expansion tank/cap?

[veryDisco]

Radiator. Easy to change and once you get the old one out it will be obvious. Mine was seeping for months.


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[veryDisco]

Oh. And definitely the tank first. Sorry, reread the post.


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[Dr Dynamite]

Well this is what happened and how it is going on now....... I bled the cooling system numerous times..... the steaming stopped, no leaks and no overheating.
The funny thing is that the last time it overheated, the temperature gauge passed the middle I was backing out of my drive way, it's on a pretty steep incline, I leveled out and then my temperature gauge went towards the blue, my obc said 60°C ...... a couple minutes later it goes from 94°C to 107°C, 107 at idle but mostly now while driving it stays between94hi to 99°C . So far so good. My low coolant dash light comes on every so often. I ordered aux fan switch, coolant level sensor, the seal for aux switch and 2 expansion tank to engine hoses.

The radiator and water pump are next on my list. The ET cap is almost 2 years old maybe 50k miles on it and made by G.A.S...... ET is 2k miles old along with the thermostat and most of the radiator hoses.

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