2006 Aveo- Does a replacement 20 psi radiator cap hurt the system if the original was 17 psi?

10

Asked by Mar 29, 2016 at 12:41 PM about the 2006 Chevrolet Aveo LS

Question type: Maintenance & Repair

I want to replace the cap, but I can only find 20 psi caps available

4 Answers

4,905

nope...

1 out of 1 people think this is helpful.
4,905

the important gig will be the thermostat...be sure a 295 fresh one has been installed...the cap pressure of 20 is just fine~

10

Thanks

1 out of 1 people think this is helpful.
86,615

It appears that it is OEM pressures, I agree that 20 psi it high but engineers do crazy things these days, it possibly due to the fact that the cooling system is so small they didn't want it to boil out the coolant so they raised the pressures to make boiling harder to to do. see chart.

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