Lexus: starting problem 93 ls400

i have an 93 ls400 and i could start the thing when the temp rose above 70
degrees, i know it sounds dumb but its true i attempted to take the air
intake chamber off and clean it and the throttle body to my surprise it
wasnt that dirty and certainly not clogged, but put it bak togethter and
she started right up but now not even that will do it any suggestions??
thanx

"thattox" <net> wrote in message news:<talkaboutautos.com>... 

Have you checked the high bypass air intake resonator port? Sometimes
the clamps on each side of this will loosen alowing a air leak -- this
results in inaccurate info to the resonator regulator port butterfly
valve. This affects cold starting or very hot starting only.