Hello guys
My 2001 4cyl Auto. Accord EX with 58000KM recently started shaking a lot while idling in D4 or R but when i rev up above 1000RPM vibration goes away.

2nd problem:
when I cruise at 60km/h the RPM used to be at 1250 to be exact but couple of month ago, my car started to lose power/acceleration and when i cruise at steady 60km/h the RPM is way above than before which is 1800rpm
can anybody tell me what the problem is?
thanks in advance