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2002 PT Cruiser - High Side Fitting on Low Side

GM Tech on Thu July 27, 2006 1:01 PM User is offline

So I glanced under the hood of the PT yesterday- the high side fittings is sweating- hook up a gage set it reads 50 psi- obviouly a low side reading-- looks like the factory fill uses the high fitting BEYOND the OT for meer convenience- I suppose there is a high side fitting that really is high side underneath somewhere- but I was in my work clothes and didin't want to lay under the car-- can anyone confirm? Just my daily thoughts and observations...........

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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......

Rich_O on Thu July 27, 2006 1:31 PM User is offline

I changed the oil on a friends PT a couple of weekends ago.

Just a vague recollection, but I remember seeing another fitting down near the compressor. I might have been seeing things, take a look.

Was that "high side" fitting a large diameter service port??

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Stay Cool!

Rich

GM Tech on Thu July 27, 2006 1:35 PM User is offline

My RED coupler went right on it- so yes it was..............and it read 50 psi when running- same as the blue coupler within a couple psi

-------------------------
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......

Rich_O on Thu July 27, 2006 1:38 PM User is offline

Both up near the hood hinge on the passenger side?

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Stay Cool!

Rich

Edited: Thu July 27, 2006 at 1:39 PM by Rich_O

GM Tech on Thu July 27, 2006 2:43 PM User is offline

correct-o-mundo..........

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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......

TRB on Thu July 27, 2006 2:46 PM User is offlineView users profile

Have not seen a PT in our shop that I recall. Good to take a note of this when we get a poster stating pressures are equal. Thanks for the heads up guys!

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UK Tech on Thu July 27, 2006 3:54 PM User is offline

I know all the new Renaults over here only have one service port. And it's a HS fitting on the low side of the system.

Fiats also have a LS fitting on the fuel rail, and we've had more than a few recovery machines that have recovered petrol.

DetroitAC on Thu July 27, 2006 9:19 PM User is offline

Just cracks me up to read this!

I was working for Chrysler on the PL (Neon) and PT when the PT was launching. My responsibility was the PL, but there was of course a lot to be done with PT since it was launching. The OT was making a bit too much noise, so it was moved further upstream in the liquid line. The release engineer forgot to move the high side service fitting. It was a running change quite quickly if I recall to fix that, but they were not going to stop building PTs even with clearly incorrect lines.

No joke, they were built that way for a while!

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There are 10 kinds of people in the world, those who understand binary and those who do not.

NickD on Thu July 27, 2006 9:40 PM User is offline

You know that the life span of a production manager is very short, the constant stress kills them. Forgotten those days when I was an engineering manager and was constantly pestered by production to solve their problems of which most of them created. Of course corporate management favored production that is understandable, as without production, nothing would be shipped and no money would be coming in. But that constant pestering slowed my department in development of new projects that put us behind that had to be rushed into production.

So little oversights like that are understandable, and isn't that what the service department is for?

Some companies totally divorced the engineering department from the rest of the plant for that very interference reason. I preferred working with production, but not on their problems. Understanding production is very important in designing a product that is easier to produce.

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