AC expansion valve adapter issues
#1
AC expansion valve adapter issues
Hey Guys,
So I just got done retrofitting A/C into my 87 4runner from parts off of an 88 4runner. After installing all the parts, it held a vacuum and was filled with R-12. The air just was not getting cold enough. The coldest it got was around 53 degrees.
So I drove it to work that day and running the ac but it just wasn't getting cold enough. I suspected the expansion valve was stuck closed. On my way home, my high pressure line out of the compressor busted. So I replaced hose and the expansion valve.
Here is my issue. The TXV that I bought had an adapter to make it fit because the fittings are larger on the new TXV. I replaced the O rings where I saw they went but in the adapter there was a bevelled nozzel piece that seated into the adapter. I saw no place for the O ring to go. After putting it all back together, now it won't hold a vacuum.
Has anyone had any problems with the replacement TXV adapter? I may be overlooking where to place the O ring.
The new TXV part number is Factory Air 38616
The Factory TXV part number is a Denso 047500-0640
Thanks for the help guys
So I just got done retrofitting A/C into my 87 4runner from parts off of an 88 4runner. After installing all the parts, it held a vacuum and was filled with R-12. The air just was not getting cold enough. The coldest it got was around 53 degrees.
So I drove it to work that day and running the ac but it just wasn't getting cold enough. I suspected the expansion valve was stuck closed. On my way home, my high pressure line out of the compressor busted. So I replaced hose and the expansion valve.
Here is my issue. The TXV that I bought had an adapter to make it fit because the fittings are larger on the new TXV. I replaced the O rings where I saw they went but in the adapter there was a bevelled nozzel piece that seated into the adapter. I saw no place for the O ring to go. After putting it all back together, now it won't hold a vacuum.
Has anyone had any problems with the replacement TXV adapter? I may be overlooking where to place the O ring.
The new TXV part number is Factory Air 38616
The Factory TXV part number is a Denso 047500-0640
Thanks for the help guys
Last edited by Luther Grimace; 07-12-2011 at 09:28 AM.
#4
I contacted a local ac shop about the flare type adapter fitting and they said as long as they are good and tight they work fine. I am going to replace the o rings at the firewall connections and on the hose I replaced for good measure and see if that fixes it. If not I will be hunting down a Denso TXV
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