Did you vacuum the system after you replaced said parts?
My A/C isn't working, I've replaced almost everything.
- Thread starter Noobular
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
And did you flush the evaporator? And you’re sure you don’t have two orifice tubes installed? (I think there’s two optional places on our trucks).
I think on the orifice tubes it depends on year where it is located. The later years is in the condenser and the early years is inline somewhere around the inner fender.
Really high pressures on the high side would suggest a blockage somewhere, poor air flow, or possibly way overcharged. Those pressure charts typically refer to operating with the fresh air door open. Also, watch out for R134a Replacements. It's not real R134A and operates at different pressures and temps.
skylark
I'm Awesome
I was just going to say that about "fake" 134a.
Project Farm on Youtube has a video on it. He did what I say is a fair and mostly scientific comparison.
xc_hide_links_from_guests_guests_error_hide_media
skylark
I'm Awesome
Great timing. I like his approach to testing. I'll try to check it out later.
Supercharged111
Truly Awesome
- Joined
- Aug 20, 2015
- Messages
- 13,477
- Reaction score
- 17,340
So OP jumps the low pressure plug and compressor kicks on. Low pressure switch has been replaced, so likely good. Have we put eyes on the connector itself? My plow truck did this exact same thing and it needed a new connector pigtail.
It was easy enough to verify, if I jiggled the plug just right the compressor would run for a bit. Putting the new one next to the old one makes it super obvious.
You must be registered for see images attach
It was easy enough to verify, if I jiggled the plug just right the compressor would run for a bit. Putting the new one next to the old one makes it super obvious.
Yes, and then in certain years on the Suburbans with rear air (RPO C69) - Tahoes too IIRC - the front orifice tube was near the fender, after the wye where the HP pipe splits to feed the rear.
In the rear there's a TXV mounted on the evaporator; no orifice tube in that circuit.
Last edited:
On some trucks orfice tube is IN the evaporator (bottom tube to make it extra inconvenient)
Similar threads
Members online
- 1 slow 84 chevy
- 97GMCC2500SLE
- Ozzy4194
- RonSoCal
- 1997
- Carlosthehandyman
- fancyTBI
- Hammersmith
- Sle-z_90
- Road Trip
- Badcraig
- johnckhall
- _W1N_
- Drunkcanuk
- klzeturbo8
- mxkinn01
- Ckt93
- 92yukon
- npme99
- Ebrogan05
- Rob-tie
- nightfire37
- Christmastree Burb
- lj502
- Off Grid Access
- dragnazz
- Robert Jelen
- Klassen
- 97c1500themistress
- South VA
- 94 Sub
- wilburou812
- dmage
- Joe Guldan
- audilowksta
- Notjoken
- dotwell69
- razzle
- GONE_FLAT
- strikk
- BNielsen
- solaralexx
- retorq
- Carlosm86
- ElliotV
- Orpedcrow
- Sparkyenfuego13
- Suzukin92
- DGperformance
- Joe III