All back together and so far I've driven it about 100 miles with various types of driving with no CEL! I think my problem is resolved! So far I haven't noticed any rough idle on cold starts, I'm pretty confident that was intake leak related.
If you're doing this project I would recommend taking pictures of the valve covers with all of the bolts installed so you can later reference where the stud/post bolts go that hold the wire looms in place. Also some fuel injector service may not be a bad idea either while you have it torn down. My injectors were rather crusty looking on the outside from all of the debris that had fallen down around them over the years but I think they were still working fine so I just cleaned them up and installed new O-rings and replaced them.
Here's my updated parts list of what I ended up needing.
Intake manifold gaskets- I went with FelPro
Ford OEM intake manifold which comes with new aluminum coolant crossover installed and throttle body gasket.
Thermostat
Thermostat housing O-ring
Thermostat housing bolts x2 - These were crusty and I ended up breaking one off so I replaced them both.
COP replacement boots
Valve cover gaskets and bolt grommets - FelPro
Spark plugs
Cal Van Spark Plug Thread Repair Kit - I knew I had one plug that had a previous repair that I didn't trust so I installed a new insert while I had it torn down.
If you're doing this project I would recommend taking pictures of the valve covers with all of the bolts installed so you can later reference where the stud/post bolts go that hold the wire looms in place. Also some fuel injector service may not be a bad idea either while you have it torn down. My injectors were rather crusty looking on the outside from all of the debris that had fallen down around them over the years but I think they were still working fine so I just cleaned them up and installed new O-rings and replaced them.
Here's my updated parts list of what I ended up needing.
Intake manifold gaskets- I went with FelPro
Ford OEM intake manifold which comes with new aluminum coolant crossover installed and throttle body gasket.
Thermostat
Thermostat housing O-ring
Thermostat housing bolts x2 - These were crusty and I ended up breaking one off so I replaced them both.
COP replacement boots
Valve cover gaskets and bolt grommets - FelPro
Spark plugs
Cal Van Spark Plug Thread Repair Kit - I knew I had one plug that had a previous repair that I didn't trust so I installed a new insert while I had it torn down.
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