1998 Acura Integra I felt a engine jerk when I press on th

I edit the previous post.

When I am rolling with the car
the car do the frog when I release(stack off) the gaz pad

My inner c.V joint bleed grease
but when I turn I hear no noise from this part.

Gear shift good

I have probaly more than one engine problem somewhere I would like to find.

When car do not rolling, in neutral gear, with parking brake, when I press a little bit hard on the gasoline pedal, I feel shake all over here. Female get orgasms when take a ride with my car. When I open the hood I could see the Oil checker shaking UP and down. If I put engine on the ground we cant made a race with only the engine. My engine look like old school washing machine.

When I start the car the rpm gauge indicator stay to 1500rpm for 3 second after is drop to 1250 rpm. When idle drop down to 1250rpm the car shake and the engine noise change the sound. After 2 second the idle return to 1500 rpm. When the car is warm up idle stay to 750rpm. If I use something electrical would take a lot of juice battery the Idle could get drop of 50 rpm.

When I drive If I put the gear to neutral the idle stay on 1000rpm. When the car stop rolling 3 second later the rpm gauge indicator decrease to 750rpm

I change the spark plug wire, the spark plug and the cap rotor. When I press on the gas pedal, the engine stop produce jerk.

But all problem in the last post still there.

I notice something today : The car are in parking, not move. When I pump fast on the brake pedal the RPM idle go 200RPM up

I change the spark plug wire, the spark plug and the cap rotor. When I press on the gas pedal, the engine stop produce jerk.

But all problem in the last post still there.

Please note my engine and my shift gear is a b20b.
I have a b18b1 intake manifold. Some part are unkown(throttle body, iacv). Probaly a b18b engine computer. How find the computer type?
I need a computer for b20b or b18b?

I have zero brake fluid leak
If I press one time on brake pedal no rpm change.(Stay on 750rpm)
If I quickly pump the brake pedal, this cause RPM increases (750RPM TO 1100RPM MAX)
sometime when I press on brake pedal I hear a noise. Sound like a vaccum leak in the brake booster or internal leak in the brake master cylinder?

Throttle body and IAC valve already cleaned (2 time). I clean with brake cleaner and another time with throttle body cleaner.

Yes when I use electrical ( power windows, light, Rear Window Defroster. This cause decreases in rpm (750rpm to 500rpm)

. When I move with the car on the street and I put the neutral gear the RPM GAUGE INDICATOR stay on 1000rpm or 1100rpm. When I stop completly, and car stop move for 3 second, the RPM decrease(1000rpm to 750rpm).

Very bad when start warm up because engine noise change and car jerk and car vibrate and the rpm indicator was unsteady

this symptom sound like car virus infected by the guy installing my engine. My check engine light not work and service coming soon light not work. Some time the check engine light get on and off. The engine installer guy said I have 6 engine error code. The guy show me oxygen sensor error code, he said this could cause misfire. He talk about cleaned fuel injector for 60$ and change oxygen sensor.