Just a quick note, pulled the hoses off the valve covers, no vacuum present there. Was pretty happy to see that. Kind of, so the plenum is good, but I will replace this with the Hughes kit at some point when it warms up anyway.

I had to do some shopping tonight and took the Dodge. I ended up getting a P0133 for the first time ever, an O2 slow to respond code, but as noted before I had the O2 unplugged (upstream) and had it running for awhile. Since then the battery went dead, because in all my electrical mechanic-isizing I left the headlights on yesterday morning in the parking lot cause it was raining haha. Way to go me. I "may" have cleared the codes before this but I'm not sure. I usually clear them a few times a week to see in which order the rich/lean codes are coming up. I drove a lot tonight and after clearing the one set that had the P0133, I only had 171 and 172 return. Predominately the 172 now oddly enough.

I bought a vacuum tester and it checked out okay. At startup it was a little shakey, maybe 2-3 inches variation, then the IAC started letting air in (huge hiss developing) and dropped down to about 15" or so. Then it came back up (hiss going away slowly) and it went up to around 21" and stayed rock solid.

I then noticed a knock developing that sounds like a wrist pin. I really, really am impressed with this truck.