1991ED6

Completed my mpfi swap two nights ago, it was running fine other than a minor vacuum leak that i bypassed for the moment till i get another hose. Now the idle is surging from 1500 rpm to 1000 rpm, the only code i had was air intaketemp sensor which i replaced, i reset the ecu and replaced the sensor, the code still persist and now my throttle bogs at low rpm and high rpm and slightly backfires. And is thowing code 10 which is crank angle sensor, i played with the timing by turnig the distributor, and found tdc matched it with the white mark on the crank pulley
What do i check for bogging throttle?
Should i advance or retard the timing? Slightly
Thanks for any good tech help

v4lu3s

code 10 is iat.

what is your timing set at?

crx_si-r

Did you remember to swap the wiring at the Tps?

1991ED6

I guess my timing would be at 0 degree, tps is already taken care of i need to redo one of the dolder connection i made, how do i know if my iacv is bad i unplug it while it is surging and still continues

crx_si-r

Your timing should not be at 0. You should be 16 +/- 2 degrees if I remember correctly

1991ED6

I set the tdc at the white mark which i believe is 0 degree there are three other marks on the crank pulley next to the main white mark, and for the distributor i turned until my motor was runnin smoother, it didnt surge as much when it was turned counter clockwise but didnt idle smooth, it surged more and idled smoother when I turned it clockwise

crvtectim

Timing light. Get one.

1991ED6

got a timing light, did timing adjustment, i need help throttle still bogs and i hit rev limiter at 3k rpm, in which i believe is limp mode, I'm only getting codes 4 and 10. I need help with this asap please.

swordofdoom

I would look at the wiring again and make sure its done right. How did you do the wiring? Crimp, twist tie, solder? The last owner who did the wiring on my civic before I bought it twist tied and electrical taped a lot of the wiring which went bad with vibrations and age.