trans

[quote:23154f35ea="benzeno"]i recently purchased a 98 toyota avalon the engine was replaced and the car hasnt moved since what it does when its cold u can feel the trans engage but doesnt drive to good like a weak engagement and 2-3 min later it starts to warm up an u get nothin no feel of engagement nothin my question is where do i start diagnosis or do i just go replace or rebuild trans[/quote:23154f35ea]

Could be the vehicle speed sensor,throttle position, and shift position sensor on the neutral safety switch.

Check the above before you go to the shifting solenoids/torque converter lock-up.