I 'm working on a 91 civic hatch with a zc engine in it and haveing some trouble with it.It won't rev past 3500 rpm and i have codes 3 7 and 13 in it.I unpluged the tpsensor and the CKPsensor and it didn't effect the way the car ran.I also added some extra grounds to the engine to see if that would help and no change. Please help..

 

Did you try looking up what the codes are?

 

#3 is map sensor, #7 is tps sensor, and #13 is barometric sensor. Make sure you have the map sensor hose #21 connected right and try switching the two end wires on the tps plug around. Then let me know.

 

i Know what the codes are. I unpluged the tp sensor and the crank sensor and it did not effect the way it ran.The wires on the TPsensor were switched around during the swap and then rechecked several times sense then.The guy brought me a distributor and crank sensor from a junkyard so don't if they are good are not but tried them any way and no change

 

check to make sure you have the correct plugs at all the sensors - we see a lot of swaps with wrong connectors plugged in - Intake Air Temp sensor (white diamond shape where it mounts to intake manifold) has 2 wire connector with red/yellow and green/white wires - EACV has 2 wire connector with blue/yellow and black/yellow wires - if this is DX/STD you should have connector which is not used at all, which was for the Tandem Control Valve, has 2 wire connector with orange and black/yellow wires - check voltage on TPS to make sure it is correct - make sure MAP sensor is connected and vacuum lines are correct - reset ECU anytime you make any changes

 

Is your car a Si or Dx? If it's Dx you have to run the injectors wires straight from the ecu. Do not use the wires coming off of the harness. They break off somwhere in the harness. Trust me run the injector wires straight from the ecu to the injectors