tgreese wrote: ↑Tue Jul 06, 2021 8:00 am
The OP also mentions the "vacuum check valve" which appears to be upstream of the TAC temperature sensor which is located in the air cleaner. Any idea about that?
yes, it is a part that avail. I had the specs somewhere, mine is leaking a bit of vacuum, you can bypass it, unless you drive in very cold weather... Will add pict shortly of one that could be a candidate, duralast E108 (this is a very old ref)
3/4" spacing
tgreese wrote: ↑Tue Jul 06, 2021 8:00 amI would mention to the OP that the emissions system changed every year in that era, and aftermarket parts support will be spotty at best, more likely unobtainable. AMC did not build a lot of vehicles compared to say Ford and Chevy, and there will be virtually no market for a lot of these unusual and low-volume parts.
Very good point that emission changed almost on a yearly basis.
I was looking at my set up because I do not have the EGR dump valve, and did not want to add confusion, you can check the 82 parts manual on Tom's site, and it matches my 85 set up that passes smog.
White and Grey valve J323 5938 as per my pict above for the heater flap, White and Yellow J323 7141 for emission flap of the air filter and Black and Purple for the EGR J323 6284. I do not have the VSV valve which has a White and Purple J323 6285. Pages 1512 and 1522 for the 82 TSM.
No ref on the little check valve in the parts ... looks similar to the one found on hot tub that control the air operated knobs.
added a better pict
you can see in the background the EGR delay valve circled, along with the 2 nipples on the air cleaner for the thermostatic signal for the EGR
for some reasons those picts are tiny, they are in my engine bits link below