i have a 91 crx si with dohc zc motor tranny the whole set up and when im warming up the car it tends to drop automatically 600 rpm's from 1500 warm up rpm's to 800 and then my check engine light up and it wont rev past 3200 i try then it back fires loud like i had no cat no exhaust period but the i turn the car off once its warm and back on its back to normal then im in the freeway doing like 80 and my motor starts stuttering and feels like its not getting the power it needs and it chokes a little what is it anyone had that problem before ?????? i need help cause im saving for a b16a swap but till tehn i got to keep my car running this is my 4th crx never had that problem 2nd with zc swap help??????

 

thats could be two things tps sensor,or crank pos.sen inside the dizzy.check the voltage on the tps at wot.i forgot what wires to probe the helms should tell ya what wires and what the voltage should be..and if its the ckp sen.u have two options 1 get a dizzy from the junkyard or 2 rebuild the one u have ,but u still will need a good dizzy to do it and its really not a job for a novice.hope this helps out.


peace

 

thanks i need to check it. it got worst today