Pressure switch o-ring

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04-11-2024, 05:58 PM

80schild

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Car: 87 GTA

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Transmission: 700r4

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Pressure switch o-ring

Can anyone tell me how the o-ring works for this switch? Does it sit into the blue area, or does it go on the stem? I bought a leak detector and it's detecting a leak around this switch.

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04-11-2024, 06:10 PM

dixiebandit69

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Re: Pressure switch o-ring

It goes on the valvestem. Be sure to lube it up well with PAG oil, or else it can get pinched.

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04-11-2024, 06:20 PM

sofakingdom

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Re: Pressure switch o-ring

Right: there's a groove on the valve stem, that it goes into. Which is possibly why it leaks, with it the way it is now.

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04-11-2024, 07:49 PM

80schild

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Car: 87 GTA

Engine: 5.7 TPI

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Re: Pressure switch o-ring

Quote:

Originally Posted by sofakingdom

Right: there's a groove on the valve stem, that it goes into. Which is possibly why it leaks, with it the way it is now.

it had a black o-ring, but it was pretty dried out looking. I bought a multi-pack of the green a/c o-rings from advance auto, but they don't seem right for some of these connections, either too loose, or so tight that they seem stretched.

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