Car Sat For a Year -- Best steps to revive?

[golfyeti]

I'm going to put my car back on the road after a 12 month sit w/o a battery in the driveway. I'm getting a number of regular things done before cranking her over plus a few upgrades:

Regular stuff
oil change,
new K&N 9" cone filter (trust me its due)
tranny oil change? -- (and filter ? -- had filter replaced about 30,000 Kms ago)?
fluid top ups, new plugs maybe, etc

Uncommon stuff:
I have new ZZP 3" down-pipe and cat to install so might as well -

I had a cat plugging issue (or running super rich?) before I took her off the road so should I just order new downstream O2 sensor, no? Brand suggestions? (I know not Bosch - -lol)

Any special start-up procedure or considerations given she hasn't been started or had a battery for year?

Thanks in advance for any suggestions. It's great to be back in the Bonneville saddle so to speak. Can't wait to hear her growl and whine again!

[00Beast]

I'd change the plugs, and while the plug is out spray a little penetrant in the cylinder to loosen any rust that may have formed. I'd definitely replace the front O2 with a Denso or AC Delco/Delphi.

[golfyeti]

Great to see that you are still helping so many 00Beast. A special cheers goes out to you for your valuable assistance.

is the front one more likely needing replacement?
Or definitely do both? Seems a less expensive route than having the shop test the existing ones..lol

[00Beast]

The rear one just monitors the cat, it's much less important. Even if it's failed, all that is really affected is you throw a code...

[crash93ssei]

My '93 SSEi sat out back in the woods for almost a year, I just charged the battery and changed the oil then fired it up and never had any issues.

[1oldman]

WOW!!!!! Great to have you back Mark! Glad to see your gonna be back on the road again with that great looking Bonneville! I'd definitely pull the plugs and spray a very small amount of light oil motor oil into the cylinders before trying to fire it up. You could even just put in a few drops and turn it over by hand with a wrench/socket if there is enough room on the crankshaft pulley bolt. - BC

[nos4blood70]

Welcome back! Maybe put something in the gas? Like a conditioner/injector cleaner. It has been sitting for a long time.

[MattStrike]

+1 on the penetrating fluid in the cylinders (PB Blaster is my weapon of choice). There isn't a spot where the engine can stop and have all the valves closed, so there will be some oxydation/rust in one of the cylinders.

+1 make sure the engine can turn with a socket on the HB bolt before trying to fire it up - because the starter motor may have an issue that get's incorrectly diagnosed as a siezed crank.

The only thing I would add is to prime the fuel pump (key to on for 10 seconds, key off for 10 seconds, repeat 3 times with a fuel pressure gauge) to verify it's building up pressure and to decrease the amount of time you have to crank the engine to get it to start.