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| Fiero Air Conditioning Parts List (Page 3/4) |
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wgpierce
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JUL 05, 11:04 PM
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RWDPLZ, can we add compressors to this? I think that would be very helpful for people researching what they need. For me it was tough to figure out which part number HR6 Compressor to use on my 87 2.8. I know now, but it would have been very helpful and handty to have it here, which is what I used to get the right switches etc to rebuild my system.
Also, should you ask Cliff to put this in the how to section to keep it out of the archives? It is incredibly valuable info, thank you! 
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theogre
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JUL 06, 01:10 AM
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| quote | Originally posted by RWDPLZ:
The more expensive $30 variable ones are made to improve cooling when the car is stopped, like in traffic or just idling. It's meant to more closely mimic the operation of the thermal expansion valve used by most non-GM systems. Standard VS Variable though, nobody seems to agree if it's worth it or not. One thing to consider is it introduces moving parts to what previously was dead simple, introducing a potential failure point. |
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Standard VS Variable orifice tube is tough call. A lot of money for what they are. Many hate them others love them. May work w/ clutch slapper types like HR6/DA6 but won't use it w/ V5/V7 because may mess up the control valve in them because basically two things are trying to do same job.
"Standard OT" can have different colors too. GM etc have 2 or more, White (and Black/White) for R12 and some cars another color for R134a w/ different (smaller I think) hole size. (Ford had 5 colors w/ different hole sizes.) Example Only publitas.com TX2611 TX0056 TX2616 I see many GM site are using the blue tube w/ R134 but have not tried this.
Other "Expansion Valves" often have different names depending car/truck Brands but many are same... Often on the firewall, 2 or 4 lines going to a large block and "UFO" disk on one side.
When they are bad often acts like no refrigerant yet can cause very high side pressure when use a full manifold gauge set. If completely bad can or Worse many are fooled by ads saying just add refrigerant and make more problems causing to blowing out high side parts. That can cause Hundreds of $ to fix them. I recently got rid of a car w/ this setup because dead AC cost to much to fix.[This message has been edited by theogre (edited 07-06-2018).]
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IwannaIRM
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SEP 19, 11:43 AM
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Where can I buy this complete setup? acsource appears to be closed.
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fierobug
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SEP 24, 06:33 AM
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You need to purchase a new compressor. Dont do what I did and get a rebuilt to fail later . TOO MUCH WORK to redo. Autozone has a kit. A/C Replacement kit
New. HR6 compressor. Includes: compressor, accumulator, white orifice tube, compressor oil, O-ring kit. Complete Kit Includes #s: 58255, 33181, 38623. Get an HR6 not a DA6. This is for 87 2.8 Good Luck
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FIEROBUG!!!!!!!!!![This message has been edited by fierobug (edited 09-24-2018).]
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RWDPLZ
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SEP 27, 08:57 AM
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| quote | Originally posted by IwannaIRM:
Where can I buy this complete setup? acsource appears to be closed. |
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Looks like the link is back up.
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SMART VOV - High Performance Orifice Tubes
Now your customers can have:
5° - 12°F colder air (at hot idle)
Reduced compressor load and extended compressor life
Improved performance when converting from R-12 to R-134a
Improved city fuel economy & emissions
Improved performance in factory R134a systems
How it works
The Smart VOV (variable orifice valve) uses system pressure and refrigerant flow to move a metering piston relative to a fixed opening in the sleeve. The piston movement is resisted by an attached spring.
When idling at high ambient temperatures, the piston shifts to a smaller metering area similar to a TXV. This compensates for the reduced compressor output and increases the cooling performance. The Smart VOV also has a unique re-open feature which reduces compressor pressure for severe idle conditions.
At highway speeds, the Smart VOV operates on a large orifice. The net result is better performance than a TXV without the complexity or reliability concerns.
Unlike a TXV, which has constantly moving parts and small internal clearances, the Smart VOV is stationary during most operating conditions and has large internal clearances. Its low friction floating design insures smooth operation and extremely long life.
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Mike in Sydney
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AUG 04, 06:32 PM
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For o-rings, you might want to look at TFS (the Fiero Store). I purchased a conversion kit R12 to R134a from them with all the o-rings and fittings and compressor oil. Cost is around US $40. Suggest you get a new refrigerant accumulator and orifice tube. Have a shop pull a vacuum on the system before you recharge and make sure it holds. ------------------
Mike in Sydney
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sledcaddie
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MAY 29, 03:22 PM
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| quote | Originally posted by RWDPLZ:
I put one in my car, and it works fine. |
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What is the advantage of using the variable orifice?
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Kevin87FieroGT
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MAY 29, 04:01 PM
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The variable orifice will allow your a/c to stay "close" to full cold when sitting at idle (ex. stop light). It's worth the extra few dollars if you're going to change the orifice anyway. [This message has been edited by Kevin87FieroGT (edited 05-29-2020).]
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Kevin87FieroGT
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JUN 02, 10:35 PM
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RWDPLZ posted a great list of parts for all our A/C needs, his lists were made in 2014. I used his list however some of the parts I needed have had their numbers updated since. Below are the parts I used to replace a faulty compressor. Many thanks again to RWDPLZ for his many detailed A/C repair postings, they have been very helpful !!!
I needed a new compressor due to leak in compressor case (end cap) on a 10yr. old reman #57255, HR-6 compressor.
Parts used were for a '87GT A/C previously converted to R134A. This list will also work for converting your '87 from R-12 system to R134A.
Reman. compressor (HR-6, Four Seasons # 57255) New compressor would be the Four Seasons #58255. I used the reman. as it was a warranty replacement.
Accumulator /Dryer (Murray 70-3660)
O-rings R-134A type (Murray kit #26375)
Varible orifice (Murray #38902, red)
High pressure switch (Murray #35972, purple, low on 283psi)
Used OEM low pressure switch (red, single wire)
A/C oil Ester 100 w/leak detector (4oz. compressor, 4oz. drier).
R134a Freon 4-12oz. cans.
These parts were purchased at O'Reilly Auto. All are also available at Rock Auto.
R-134a System Pressure Chart:
http://acprocold.com/faq/r-...stem-pressure-chart/
Tested 75*F OAT, normal A/C setting, 32psi low port, 180 psi high port, 38*F at center interior vent. Drive test 75*F, 40* at center vent. Variable oriface works great![This message has been edited by Kevin87FieroGT (edited 06-03-2020).]
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cam-a-lot
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JUL 05, 08:22 AM
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Hello
Great article- needs to stay out of archives.
Trying to rememnber the correct WEIGHT of R 134A to charge my system on a V6 Fiero (has 3800 compressor)
please advise? Ogre's link is broken[This message has been edited by cam-a-lot (edited 07-05-2023).]
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