i gotta 89 crx hf wired si with a zc single cam and i just got it runnin and it was runnin fine and then all the sudden it started sputterin and missin soundin like it is runnin on 2 cyliners... its runnin on all 4 its gotta new cap and button, timing belt and is in time the ecu at first was givin a 13 and 17 and i cant figure out if the BARO sensor would make it run like that and cant find it anyways then i changed ecus and it still says 13 but now it has an 8 instead of a 17 which is the tdc sensor and i dont know if that would make it run like that either.....if anyone has any suggestions lmk cuz i need to fix it BAD!!!

 

join the crew

 

are you throwing any codes?

if not... check for spark in every wire by pulling on plug wire out and putting a screw driver into the end of the plug wire, set it down by a ground... have someone crank your car and you watch for a blue to white looking spark jump from the plug wire to the grounding point.
if it throws an orange or weak looking spark... or no spark at all... ur coil could be going out.

if that checks out good, check your fuel filter by loosening up the test screw on top of the filter.

if you are throwing ANY codes at all... it would be smart to fix the sensors that are bad... and then if the problem still occurs... do these tests i just listed.

 

 

i would check to make sure the timing belt didnt jump a few teeth.

check your injectors as well to make sure there still pulsing

 

check your plugs as well

 

not timing no codes not plugs not injectors not filter....im changin the fuel pump cuz i can spray gas into the intake and itll run better so hopefully thatll solve it....thnx 4 the advice so far....ill let yall know if the pump does it!

 

it could also be the tone wheel at the crank , theres a sensor that finds tdc when the crank turns , and don't check the spark plug with a screw driver , unless u want a new distributer tooo

 

the tdc sensors in the distributer aint it???

 

its on the tone wheels after the oil pump, then tone wheel , then damper, theres a sensor there, u have to take off the damper then the cover , then u'll see it