what up guys!!! got a bit of a problem.. i just got a 94 civic cx. 5spd. the motor was swapped with a d16z6 and is running on a PR4 ecu.(v-tec was on switch but i removed it)
and it doesnt seem to run right..
at start it high revs @ 2000rpm. and as it warms up it lowers down but not just to 1000 more like 500( or bearly running)
and when i step on the cluch i loose about 500rpms, then regain 500 after i let off the clutch..
also in my brakes, i changed the front pads, rear shoes and rear wheel cylinders, bleed the lines and my pedal still looses pressure and after holding the brake for a sec.. the pedal hits the floor, n the sec. i ease off im rollin back lol..

oh and with all these problems theres still NO check engine light.....

unfortunately i just got this car not too long ago so i really dont know everything about it.. if u need me to ID any part i will/try

all help is appreciated!! thanks!!

 

I wouldn't expect those to trigger a CEL since the clutch and braking system is purely hydraulic (unless you have ABS). For your brakes, problem may lie with the master cylinder or brake booster. I had a similar problem my car and it turned out to be the master cylinder.

 

^ +1

Does the check engine light, light up when you start the car?

You should get the right ECU for your engine, the P28. Do you have a 1-wire O2 sensor, or a 4-wire hooked up? What transmission are you using? Does it have really long gearing?