polecat702

It's starting to get hot here in Sin City, 102 expected by Saturday.

I've got bubbles in the sight glass, and it doesn't cool down right away, but will over time.

Should I buy one of those 134 cans with the gage, and top it off myself, or take it to a shop? Mine has the unit in the back also.

Thanks in advance. The A/C has been this way since I bought the car 5 years ago.

Bilal928S4

What refrigerant are you running in your system?
It is not advisable to mix refrigerants.

linderpat

I would have it professionally flushed and refilled. It isn't that expensive, and as Bilal said, you won't mix the wrong stuff. I have heard more horror stories about these refill cans from the auto parts store. I've never used them , but I've been scared off, especially since a flush in these parts is a h8ndred bucks or so. A lot cheaper than a system rebuild due to can refrigerant.

polecat702

Converted to 134.

Auto Air & more has a great reputation here in Vegas, I'll guess I'll run it over to them.

SeanR

You won't hurt anything by getting a tank from Autozone and trying to fill it yourself. Go for it.

polecat702

Thanks, Sean!
BTW, did ya get that scooter?

SeanR

Not as of yet, its still in committee being debated by the higher ups. Wife and daughter. Something about the cost of college etc.

chrisjbell

I get that a lot from my wife and daughter. I have no idea why they think that this "college" is more important than what I want to spend money on.

polecat702

Go get you're bike! All that other crap will take care of itself!

I put my daughter through collage, and didn't have to sell my soul or anything else.

Women like to be in control!

I let Dee believe whatever she thinks, then I do as I please. Trust me, it works. Women don't respect a man they can boss around!

Go get that bike Sean!!

The Forgotten On

My parents can't tell me what to do on my 928 while I am in college. As long as I spend my own money on it.

It adds a bit of an interesting dynamic to financial arguments

Other than that I would recommend a flush and refill. It couldn't hurt and will help cooling performance in most cases.

docmirror

I have a 134 small kit with the pressure gauge and blue hose. Since I just did three other cars, I'll give you a bit of advice on DIY. The discrete limit marks on the gauges lie. I got a car filled up into the high green area on the gauge after setting it for ambient temp and the high pressure switch activated and shut the AC off. I thought it was a unique deal, and drained a bit of juice out then moved to the next car. Same thing happened. Once you get the AC pump to stay on continuous don't add any more juice, all you do is raise the evap point on the valve, and that's not gaining anymore cooling effect.

Also, use a big fan in front of the car to blow as much air into the condenser as possible. This made a big diff on the car I did without, and then with it. showed another 5F drop on the thermo in the vent. Even with the engine fans running, having an external fan blowing on the condenser when doing the fill made the pressure change by ~25PSI on the gauge. Note that when the hood is open, the puller fan isn't as efficient as with the hood down.

Last, before you get all worried about the temp drop make absolutely sure your recirc damper is working. It's above and behind the glove box and it's a be-otch to reach and look at. The damper plate must be all the way up and sealed against the fresh air inlet plate for the AC to work well in high heat. Once it's up there, you can check it with a small screwdriver or a stick, just poke it up through the waffle grill and push on the damper plate. Hope it's fast against the inlet plate, and if not, and it moves you'll need to replace that vac actuator up in there.