If your 4 Runner shakes when it is idle, it is in definite need of a tune up. The shaking could be from a variety of things, including the fuel filter being clogged or even a cylinder misfire.
Kinda need more information. Is it just when accelerating, or also when idling in drive? Does it only do it at a certain rpm or speed, or when applying brakes?
you have one or more cylinders not firing causing imbalance. check for spark at each cylinder.
Spend the money to have it diagnosed by a repair shop as it will save you plenty.
No , a 2002 Toyota 4 - Runner is rear wheel drive or 4 wheel drive
NO! Depends on your definition of safe?
Drive shaft is going out
The drive shaft falls into the street. Before that the car shakes.
Rear wheel drive
you shouldn't drive a 95 neon
Tires may need balancing
A worn or loose out of adjustment drive belt could be the cause.
Have the tires Balanced. Then check alignment. If still shakes is it when your press the brakes? If so check the rotors and abs system. Or if it could also be the over drive if it is when shifting gears. Try running it with the over drive off.