1992 Lexus ls400 no power sputtering
 

I bought the car about 2 years ago it's been sitting for that time becuz it had a transmission problem recently I replace the transmission I turn the car on and the car it's spuddering it has no power I put it on drive the car wount get get past 2k I replace the 2 coil distributer cap and rotor spark plugs may someone help me please