That's the high side !!! Wrong guy for any ac work. Hose and pipe diameter also lets you know what side your on.

 

Go figure, kinda makes since considering it's above the other port, I even asked him when he mentioned that he only needed to connect to the "low side"

This is exactly why I don't let anyone (besides Tony) lay a hand on my Shark

 

Darien..........from a web site close to you:

 

On vehicles with an orifice tube the accumulator/dryer is on the low side. He just assumed.

 

I called the guy and let him know that we were hooked up to the "high side". He's offered to come back and try it again, connected to the other port. He said he wouldn't charge me and use it as a learning experience. He's also offered to evacuate the system and fill the system.

Should I recommend connecting both ports?

 

By somebody else. lol That's your call. Is your car a learning experience for someone ?

 

Is this guy a mechanic?

I'd be looking somewhere else.

 

Darien
Time to find a new A/C guy.....maybe 928intl knows a good 928 shop in Vegas (other than Tony's garage)?? Its really not that hard, once you find someone who will work on R12...which is rare in CA...but might be easier in NV?

Does Tony have gauges...they are not that expensive at any local auto parts store.....

 

This guy is a mechanic, he just made that comment because he's never seen the low side being closest to the drier.

I'll sleep on it before I invite him back over. Although, after searching the archives, if he does get a second chance, I'll take the lead on the learning session

 

So, he may be familiar with common AC systems, but you'll be a bit lucky if the is able to help you. He should have known the low side cannot be by the drier. He was suspicious of that, but he should have known or been able to figure it out by following the plumbing lines. There is a logical way to troubleshoot these systems. Maybe read over Wally's guide so you can help him help you.
https://www.928gt.com/t-wallyhvac.aspx

 

928 is not the car to learrn on.Find a different a/c guy.

 

Well, what we have here is a failure to communicate.

As per Wally, etc. the valve on the dryer is the high side. the low is passenger side, under the top rad hose, much harder to access. The valve sizes (low and high) should be the same for either system, that is R-12 is a smaller size than 134, but should not vary on the same system. I would get another mech.

 

Steve-

The R-134a 'camlock' style ports are different sizes low vs. high. Probably so "experts" would have a tougher time cross-connecting the gauges and hoses. In the R-12 days, we ended up with smaller high pressure ports on most American cars for the same reason. Think how many of theose just-top-it-off kits were sold, abd accidentally connected to the high-side port. The only thing thta might save you is that the system was already undercharged so the high-side pressure wouldn't be too high. But hook a can to the high side on a hot day and system that's charged, and KABOOM!



Darien-

If the guy genuinely hooked to the high side and you saw only 70 PSI, my nickel says the compressor wasn't turning. Find out why before you invest in this guy's time and freon. In spite of his belief that the drier should be on the low side, he should have noticed that the port is on the condenser plumbing. The condenser is ALWAYS in the high-side plumbing.

 

Most likely this is why he assumed the dryer was on the low side.
http://autoactraining.com/artman/pub...icle_117.shtml

 

UPDATE!!!!

Well, I chose to work with him and had another go at it

I think he made an honest mistake in thinking that the port next to the receiver dryer was the "low side". After explaining that the Shark is different than most, he hooked up both high and low hoses to the correct ports and it serviced like a champ

The pressures showed 235 High and 35 Low, and it now blows snow

Not only did I get a relief, he also stated that he now feels better knowing that I'm satisfied and he learned something new in the process!