Detailed it last night only to have fireworks rain down on it leaving black marks everywhere but they wipe off. Today I finally got around to replacing the O2 Sensor , bank1 sensor 2, Used OEM denso $47 from Rockauto.com. Sprayed it down good with PB blaster 2 weeks ago and made sure to replace it when the exhaust is still hot (helps a lot) Had a hammer to tap the wrench...came out pretty easy. Changed the oil with 5.5 qts. Mobile1 synthetic 10-30 wt. Changed Rear Diff fluid w. 2.9 qts Mobil1 synthetic 75-90wt. Replaced the spark plugs with denso OEM. The gap on the original plugs were 2 times larger then the new ones. Wondering if they are the original plugs. Added the maintenance info to the toyota owners website. Every car company should have this available to their owners.
I've had a random misfire upon start up for a while now on cylinder 4. I swapped coil packs 2 and 4 last week and today it did it again. Still #4. Hoping it was a failing plug. If it does it again, i'll swap injectors. Unless it's a nightmare job. Then I'll just replace it.
at 182,055 miles my '04 limited impresses me every day i drive it.