i dont push car rapidly to get her sat 80 to 100 speed, i stop at 2000rpm n car get to the maximum speed herself which it can get with 2000rpm, while cruising i sometimes lift my foot from gas pedal little bit and feel like giving gas at a constant speed for nothing.
You know if you want more power push gas pedal harder n it shifts into lower gear n speed up or sometimes in same gear car speedup herself. while in city driving suppose car is in 2nd gear and want to early shift to 3rd gear i lift little bit foot from the gas and she shifts to the next gear.
MUbarak ho, see 2200 is not that much to invest to solve your problems. When things are not completed in your engine bay and compliant for things are not working as per required, thats i guess unfair with a machine. Install tstat valve and check if its working fine.
What we people actually do is, "Chawani k pechey 10 rupay zaya kar dete hain."