[My94T/A]

I bought the car over the summer and as soon as i got it home the Opti went. So did the plugs, wires, pcv, opti and got the injectors flushed from the GM dealer. And did the o2 sensors maybe 2 thousand miles ago. All these parts have less then 10k on them. got the car with 113k and now got 119K. Well it's cold out now. So when i first start the car the RPM is little over 1000 and the oil pressure this over the 40psi mark. Then when it warm's up the car idle's fine. Then after driving it a bit and when especially when in traffic the engine will start getting hotter and as soon as it's around 210 and i m holding the brake down the car wants to move forward. And the RPM will start bouncing around 1000 to 1500. Sometimes i put it park and it will go down and up to 1000 to 1500 for the time. Then when i start driving again the temp goes down to 180 and it'll be fine. But around 210 and in traffic it's a pain. Most of the time i smash the break down, then it bug's the hell out of me, because I think it's hurting my tranny by trying to move and me smashing the brake down. Thanx for all the suggestions and replies, keep em coming.