ok. i just had a zc d16a8 put in my 90 hatch. its giving me code 9. code 9 means its a cyp sensor. I have done a but load of research and i cant find a replacement cyp. also along my findings i have read that a cyp sensor going bad is rare and the issue is more like the dizzy going bad. I had read that if you find brown or red dust in the cap it means that a bearing is spun. I checked it last night and the was a little in there. Most people that said they had a spun bearing also heard some bad noises. like whining and grinding. This is what the car is doing. its runs and drives. but idles rough. once i get above 3 grand seems to get better. would that also be a side effect of a bad dizzy? I had also got another code on the computer about a vacuum leak. I think we got them all taken care of tho. could it be a vacuum leak thats making the rough idle and something else is making code 9? any help would be great. i dont want to spend 100's buying parts to troubleshoot.

 

Is this a DPFI to MPFI conversion? The DPFI system does not use that sensor. You need to fit a MPFI distributor with CKP, TDC and CYP sensors, as the DPFI unit has only the first two. Also I don't think the harness on a DPFI car is even wired for it. A little dust in the distributor is nothing to worry about.

 

yes it has been converted to mpfi.

 

Properly?

 

a friend of mine that has done several swaps before did the swap. he is very thorough with his swaps. I dont know nearly as much as him so if something was wrong i wouldn't know where. If it was in the injection wouldn't there be a code for that?

 

another thing is the ecu i got ended up being one out an auto. would that make an issue like im having.

 

Code 9 means that the ECU is not receiving CYP pulses from the distributor. That could be because of incorrect distributor, faulty distributor, or bad wiring.

 

would haveing a rotor from my old motor (d15??) cause the problem? the one that came with the zc was nasty looking and the one from the d15 looked identical. so we used it.

 

No, the cap and rotor is the same. Really when you're putting in a "new" engine you should go ahead and buy new tune-up parts.

Make sure your distributor is one with 3 sensors, check the sensors for resistance and ground faults, and check that they are properly wired to the ECU.