How do I grease the u-joints on the back of the drive shaft? on a 2000 toyota tacoma prerunner 2.7 liter

Grease the Ball Joints, three per side (upper control arm, lower control arm, steering tie rod. if there aren't any grease zerks, its time to replace your ball joints. You can do this yourself with the parts from AutoZone or O'Reilly or Napa. I suggest you rent the ball joint tool as it will make your work a lot easier.

a safe bet is 3000miles or every three months, whichever comes first

smells to a wrong spark plug type, double check your numbers, if doubt call your locall toyota dealer parts department. Toyota vehicles are very sentimental about originall equipment plugs, dont like aftermarket plugs, also check your air filter housing and make shure all hoses are atached.
Good luck

I have a 2002 toyota tacoma 2 wheel drive My key is stuck in the ignition and will not turn

IT IS THE STEERING SHAFT SECTOR COUPLER, AND YES WE CALL IT A RAG JOINT.

Oil filter on a 2000 Toyota Tacoma Prerunner with 6 cylinder IS a screw on filter located on the drivers side front of the engine (just beneath the alternator).

Can't recall the size but, you need a socket with extension to get to the bolts holding the skid pan then, wiggle/lift it from it's hooks. Then, you can either cuss, cuss, cuss while removing the old and installing the new OR, jack the drivers side up 4 to 6 inches ( gives you a bit more wiggle room and keeps you from scraping your elbow to the bone on whatever surface you're working on).

Even then, be ready for a good cussing bout because there still isn't much room.

I do not know the answer to this problem, however I am in the same boat. My 2000 tacoma prerunner has recently started doing the exact same thing. No noise on accelerate, idle, or when sufficiently warmed up (20 minutes or so after driving). What I do know is that it is Not my brakes as I have relatively new pads (<1 year old) and Not the belt (i had it checked). Because it does not make the noise on idle, this makes it terribly tricky to track it down. So, if anyone can help us solve this problem it would be greatly appreciated.

2000 TOYOTA TACOMA 2.7L 4-cyl Engine Code 3RZ-FE

Engine Oil Grade 1......API* All TEMPS......5W-30 Optional ..10W-30
Engine, 2WD, with filter..........5.5 liters
Engine, 4WD, with filter..........5.4 liters

Manual Transmission,......GL-5/ GL-4 All TEMPS......75W-90
Automatic Transmission,A340E......AF3 / A43D......AF3

Differential, Front/ Rear W/ ADRD......GL-5 ALL TEMPS......75W-90
Differential, Front Less ADRD......GL-5 ALL TEMPS......80W-90

Transfer Case,......GL-4/GL-5 ALL TEMPS......75W-90 Gear oil.

Capacity:
Cooling System, Initial Fill..........8.5 liters
Automatic Transmission, A340E Initial Fill..........1.6 liters
Automatic Transmission, A340F Initial Fill..........2 liters
Automatic Transmission, A43D Initial Fill..........2.4 liters
Automatic Transmission, Total Fill
4 speed A340E..........7.2 liters
4 speed A340F..........10.1 liters
4 speed A43D..........6.5 liters
Manual Transmission, ..........2.5 liters
Differential, With ADRD Front..........1.2 liters
Differential, Without ADRD Front..........1.1 liters
Differential, 2WD V6 Rear..........2.6 liters
Differential, 4WD Extra Long Rear..........2.5 liters
Differential, Short WB With LSD Rear..........2.7 liters
Differential, Short WB Without LS Rear..........2.6 liters
Transfer Case, Electronic..........1.2 liters
Transfer Case, STD..........1 liters

relay or wiring broblem in column

Most double cardan driveshaft joints have a bearing in the center.
Any good repair shop and/or driveshaft specialist shop can repair/change the assembly or make a new one if needed..