Well, Ive been waiting on parts: an O2 sensor & set of COP's. Before the parts got here, I did pull the IAC Valve & gave it a cleaning. It was pretty clean looking inside but I did get some carbon out at the valve seat. I also did a propane test & found no vacuum leaks anywhere, so that's a good thing!
Got parts today & so far have only installed the COP's. Must have been the mismatched set had at least one or two on the way out. It started up fast, dropped to warm idle & it's purring like a kitten @ 800 rpms so far! I still need to address the broken connector issue & get the O2 sensor in. I slightly crimped fittings to be sure they seat well on that one but I won't leave it that way. The boot is still good so as a temp fix I may try some shrinkwrap & epoxy. An interesting thing I noticed is that the (slightly mismatched but not broken) front connector is a replacement with heavier gauge wire that is spliced on... so there MUST be a source for these 'somewhere'!
In any case, it seems it was just bad COP's... so far so good!
Got parts today & so far have only installed the COP's. Must have been the mismatched set had at least one or two on the way out. It started up fast, dropped to warm idle & it's purring like a kitten @ 800 rpms so far! I still need to address the broken connector issue & get the O2 sensor in. I slightly crimped fittings to be sure they seat well on that one but I won't leave it that way. The boot is still good so as a temp fix I may try some shrinkwrap & epoxy. An interesting thing I noticed is that the (slightly mismatched but not broken) front connector is a replacement with heavier gauge wire that is spliced on... so there MUST be a source for these 'somewhere'!
In any case, it seems it was just bad COP's... so far so good!