Overheating

2005 TOYOTA VITZ
150,350 MILES
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WERU SALIM ABDI
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I just found out my radiator cap is worn out, replaced it with another though slightly different from 1.1 to 0.9. should i be worried or all is well?
Aug 20, 2019 at 3:51 AM
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ASEMASTER6371
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Good morning.

What readings are you giving us?

https://www.2carpros.com/articles/engine-overheating-or-running-hot

A bad cap will lower the boiling point of the coolant and will cause overheating.

You check the cap by doing a pressure test off the car.

Can you describe the exact issue with the car?

Roy
Aug 20, 2019 at 4:05 AM
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WERU SALIM ABDI
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This is the third time my car out of the blue displays the temperature light. i pulled aside wait for the engine to cool then add water and continue with the journey. Luckily enough it doesn't show again. as i open the hood i can hear water boiling in the coolant reservoir. visited few mechanic who all agreed on one thing; the radiator cap should be changed. i changed the cap tho the previous one was 1.1 i went for a 0.9. had my first drive after the change and so far all is well. I am just concerned is it okay or the cap has to be exactly the same.should i worry?
Aug 20, 2019 at 5:26 AM
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ASEMASTER6371
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You should be good. I am more concerned where the fluid is leaking causing it to run hot?

I would have the system pressure tested to be sure.

https://www.2carpros.com/articles/radiator-pressure-test

Roy
Aug 20, 2019 at 5:47 AM