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GM Sealing Washers - Oldsmobile Intrigue

nyc951 on Tue July 20, 2010 9:18 PM User is offline

Year: 2001
Make: Olds
Model: Intrigue
Engine Size: 3.5
Refrigerant Type: 134a

Hi,

I am going to work on my father's Oldsmobile Intrigue and have a question about the o-rings and GM sealing washers. Which a/c components use the GM sealing washers? I will only be opening up the connections for the hose at the front of the car (can't remember if it's the high or low pressure one, but nevertheless) to seal it with Nylog. I mechanic who replaced it most likely didn't use Nylog and I suspect that's why the refridgerant has all leaked out.

Thanks


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'98 328i

Chick on Tue July 20, 2010 9:40 PM User is offlineView users profile

If you open a line you suspect of leaking, change the O rings or sealing washers.. If sealing washers, don't use the nylog, no need for it, but use it on "new" O rings..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

nyc951 on Tue July 20, 2010 10:08 PM User is offline

Thanks Chick.

Generally, which components or lines in the GM cars use those sealing washers?

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'98 328i

70monte on Tue July 20, 2010 10:36 PM User is offline

My experience has been that where the manifold lines hook up to the compressor, is where the sealing washers are used. All of the other connection points on GM vehicles I have seen use the o-rings.

Wayne

Chick on Tue July 20, 2010 10:41 PM User is offlineView users profile

It depends on the model car, I can remember as far back as '95 Caprice using sealing washers on lines to the evap, others use O rings, you can tell which lines have sealing washers because they will attach to a "block" not a fitting.. I can't remember off hand where on your car they will go.. And of course the rear of the compressor..

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

GM Tech on Tue July 20, 2010 10:58 PM User is offline

Sealing washers came in on GM cars in early 90's- even before r134a........so every GM compressor since then uses them......best thing for a sealed joint- much better than o-rings....your intrigue will use them throughout the a/c system.

Be aware the intrigue may have the blasted control head a/c flicker issue...

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The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

nyc951 on Thu July 22, 2010 12:12 AM User is offline

Thanks guys.

Do connections where sealing washers are used require any special tools, or just your simple wrench/socket?

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'98 328i

Chick on Thu July 22, 2010 6:37 PM User is offlineView users profile

Simple wrench/socket....

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Chick
Email: Chick

---------------------------------------------

Freedoms just another word for nothing left to lose

GM Tech on Thu July 22, 2010 7:07 PM User is offline

You'll need to hold the manifold from twisting with vice grips or such...

-------------------------
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

nyc951 on Fri July 30, 2010 9:17 PM User is offline

Thanks folks. I will be working on the car this weekend.

What's the Low and High side pressures I should aim for on this Olds Intrigue? I know it will be temperature dependent, but a ballpark number would be helpful.

Thanks

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'98 328i

Chick on Fri July 30, 2010 10:49 PM User is offlineView users profile

Vacuum system, fill by weight, the pressures will just tell you if something is wrong...

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Chick
Email: Chick

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Freedoms just another word for nothing left to lose

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