Thanks Yal,
I changed my plugs, how to check that coolant temp sensor, may be this is causing the problem of col start.
what is the injector cleaner.

regarding your solution of adjusting the throttle cable, what is this for becoz i asked a lot of question about the transmission.

One more this, regarding the jerk in shifting up, can vaccum modulator help, and wher is it located. By the way i haven;t changed the AT fluid and filter for last 3 months and is it necessary to put a good fluid or ordinary ATF will do its job.

shams