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Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Sat Mar 28, 2026 7:46 am
by Tim
Cusser wrote: Sat Mar 28, 2026 6:47 am
5. Sometimes I get an error message when trying to submit a reply, so I do a Preview first, then click Submit. I don't know why, and it doesn't bother me. Laptop, Windows 10.
Just submit a second time. I get the error as well and have never figured out why.
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Sat Mar 28, 2026 9:05 am
by JohnHere
The under-hood decal always takes precedence over the manufacturer-published specs. That makes it 1.35 pounds times 16 ounces, resulting in 21.6 ounces net weight of R-134a.
The UV dye, added sparingly, won't hurt anything.
On the decal, does it specify what viscosity of oil your system takes? PAG-150 is common for GM vehicles using R-134a.
My preference is to leak-check primarily using an electronic leak detector, and secondarily by the UV dye and soap-bubbles methods.
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Sat Mar 28, 2026 9:31 am
by p5200
I'll have to look again at the sticker under the hood. I don't think it said but, I've been known to miss things while reading. Thanks!
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Sat Mar 28, 2026 9:41 am
by p5200
I checked again, and it just states Pag Oil With Dye.
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Sun Mar 29, 2026 6:47 am
by Cusser
p5200 wrote: Sat Mar 28, 2026 7:30 am
Amazon has Elitech Leak detector for about $10.00 more than the HF $180 VS 190.
The board sponsor, ackits.com has this unit
https://www.ackits.com/tools/electronic ... -43-mt2734
I have HF 92514, about $65.
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Tue Mar 31, 2026 3:27 pm
by p5200
Thanks for the link, I had already ordered one by the time I saw it.
Re: Air was blowing 40 degree until turn off then blowing hot going to town
Posted: Tue Mar 31, 2026 3:37 pm
by p5200
Anyone know if it's possible to pull the orifice tube from under the front of the car on a Pontiac Grand AM GT? Neither the low or high side pressures seem to go high enough. I think it was 21.6 ounces according to the decal sticker. I managed to put two 12 ounce cans in. It never seemed to even try to get cold. Thanks!