cause the coolant temp is low , automobiles tend to do that when there cold
Rev. limiter?Plugged catalytic converter?
yes it does at 3000 rpm ( when it is in PARK or NEUTRAL so there is no load on the engine )
For most newer vehicles this is normal. It puts unnecessary wear on an engine to rev it high in park/neutral.
An engine that vibrates at 3000 RPM has an issue with balance. The harmonic balancer or the crankshaft can become out of alignment.
If your testing this with the vehicle in park it won't go over 3000 rpms because the rev limiter kicks in so you don't do damage to the engine. If you are in drive and you step on it when it's safe to do so, it should go well over 3000 rpms.
No automobile engine will even run at 2 rpm's. The average engine idles at from 650-750 rpm's, and will easily rev to 5,000 rpm's.
In assumption that this question is referring to an automatic transmission a car's engine will not rev over 2800 rpm because when the car automatically shifts as the speed increases that is the usual rpm that the car shifts at. If the car's rpm is getting over 3000 rpm and still not shifting then your transmission is going out and needs to be checked. The autmoatic transmission is what shifts the gears for you. In a manual (shift, clutch) the person needs to shift around 2500 to 3000 rpm. The only reason someone would let the engine rev higher than that for a long period of time while driving manually would be on purpose to burn carbon build up on the pistons.
RPM stands for Revolutions-Per-Minute, and is counted at the crankshaft. At 3000 RPM the engine is spinning twice as fast as at 1500 RPM.
may be use a super charger or a turbo charger
with a rev counter
When u want to go to downshift bring Ur rpm down to 1100 but in out of gear and rev the engine rpm to 1400 or 1500 don't over rev it.