Grief and confusion with 84 A/C high pressure port. (Page 2/2)
RWDPLZ AUG 29, 11:51 AM
Not sure about the 59986, I've never held one, so I'd be worried about it being a swivel or not; the swivel introducing a potential point for a leak, or it NOT swiveling, and then ending up with a port that points in some random direction that DOES interfere with the decklid.

The 59986 is a 3/16 just like the 59978.

https://www.4s.com/en/ecata...9986&type=p&search=s



Maybe the port on your hose assembly was warped slightly when the old adapter was removed, so now the adapter won't slide over it?

Another possible solution would be the get the later style hard line and install it in the front compartment, which would make future service easier since both ports would be right there.
fierosound AUG 30, 01:55 PM
Well, I got another FS 59978 and the threaded hole is just seems too big.
So I decided I'd replace the Scrader valve in the port with a new one and reinstall the adapter I have.



Unfortunately, the Schrader broke apart and the lower portion is stuck in the port.
(maybe that's why the new adapter won't go on?)
Using a screw extractor just expands it and tightens it further.
I will seal the port with JB Weld and cap it.

[This message has been edited by fierosound (edited 09-12-2023).]

RWDPLZ AUG 30, 04:09 PM
Having chunks of the old schrader valve in the port could very well cause the issue of it not being able to seat. It won't come out even with the special tool?

Might try a 'want to buy' thread in The Mall for the parts. 84 hose assembly, and 85+ front compartment hard lines. The 85+ lines also make removing the orifice tube easier. The A/C lines thread was another victim of the image server nuke.
fierosound AUG 30, 05:20 PM
AC Delco made a retrofit kit to provide a connection up front on the tube upstream of the orifice valve.
I've ordered this part on RockAuto listed under A/C parts for 84 Fiero (on closeout now...)



This is the comparison the the 84 (left) and later year A/C lines from condenser to evaporator.
The line from the condenser up front to the evaporator are interchangeable ad RWDPLZ mentioned.
But finding one in good shape could be problematic.
https://www.fiero.nl/forum/...160323-2-123621.html

[This message has been edited by fierosound (edited 09-13-2023).]

fierosound SEP 12, 04:46 PM
The rear port was not repairable, so I sealed it permanently.
(I'm thinking THAT was the "slow leak" I could never find before)

I got the above AC Delco PN 155529 retrofit kit and installation was a 5-minute job.
I now have both A/C port connections at the front of the car that will make life easier.
After I replace the alternator (that's another story) I can charge the A/C system.



[This message has been edited by fierosound (edited 09-12-2023).]