2003 Tahoe
First off, thanks for all the threads on here. Very helpful when dealing with my AC leaks. I wanted to give you my solution as many times a 'final post' is not added to the threads.
I'm driving thru Texas on way to FL. My AC was blowing warm air so I added 3 - 12 oz cans but couldn't get it over 25 psi on the low side. No obvious leaks. I was trying to reach 35-45 psi. I tried 2 gauges but they were the cheapies from autozone.
Finally added some r134a with Super Seal and let it sit overnight. Added another roughly 30 oz of r134a but same problem. Couldn't get it over 25 psi. I decided it was time for the shop to have a look. Also looked like the low side port was leaking as the autozone gauge was so difficult to get on it damaged it.
The shop evac'd it and changed out ports low and hi. Added 2.7 lbs of r134a and said it was fixed. 1 hour of driving later it is blowing steam out of middle vent. Ughhhh. And not cooling very well. Still reading 25 psi too. I call the shop and they say that's normal. What?? I demand that they check pressure again with their gauges! They say PSI means nothing.
After humoring me and guilting me I finally ask them how much freon they are putting in. It better be 2.7 lbs I say. Suddenly the service mgr leaves on an errand. Another tech comes in and says they didn't fill it correctly based on front and rear AC. Used the front AC specs. Oops. :happy160:
WOW. So the lesson is don't trust these guys. Not sure if it was a real mistake. Or were they setting me up for the 'your compressor is shot' speech?? Then I mentioned the 2.7 lbs and they gave up. I will never know much it seems a bit fishy to me.
Hope this helps. Opinions on the shop??
First off, thanks for all the threads on here. Very helpful when dealing with my AC leaks. I wanted to give you my solution as many times a 'final post' is not added to the threads.
I'm driving thru Texas on way to FL. My AC was blowing warm air so I added 3 - 12 oz cans but couldn't get it over 25 psi on the low side. No obvious leaks. I was trying to reach 35-45 psi. I tried 2 gauges but they were the cheapies from autozone.
Finally added some r134a with Super Seal and let it sit overnight. Added another roughly 30 oz of r134a but same problem. Couldn't get it over 25 psi. I decided it was time for the shop to have a look. Also looked like the low side port was leaking as the autozone gauge was so difficult to get on it damaged it.
The shop evac'd it and changed out ports low and hi. Added 2.7 lbs of r134a and said it was fixed. 1 hour of driving later it is blowing steam out of middle vent. Ughhhh. And not cooling very well. Still reading 25 psi too. I call the shop and they say that's normal. What?? I demand that they check pressure again with their gauges! They say PSI means nothing.
After humoring me and guilting me I finally ask them how much freon they are putting in. It better be 2.7 lbs I say. Suddenly the service mgr leaves on an errand. Another tech comes in and says they didn't fill it correctly based on front and rear AC. Used the front AC specs. Oops. :happy160:
WOW. So the lesson is don't trust these guys. Not sure if it was a real mistake. Or were they setting me up for the 'your compressor is shot' speech?? Then I mentioned the 2.7 lbs and they gave up. I will never know much it seems a bit fishy to me.
Hope this helps. Opinions on the shop??