swap problem

[idlafie]

Originally Posted by s14slider

ok, I have a 90 hatch. I just did a 96 KA24DE swap with all of the S13 DOHC parts necessary. The car turns over, but does not start. Checked the ECU codes and the codes came up as this: First code is a 21, second code is a 34. Is Either of these a reason why my motor is not firing up. And if so, how do I fix this?
Thanks,
Brandon

Brandon,
Have you tried removing the ECU from the harness and checking the wires/pin connectors between the distributor and the ECU?? You could have a short or a loose pin in one of the harness connectors. Take a continuity tester..the one with a buzzer in it & check the wires. Wiggle the wiring as it goes into the connecter to make sure you have a good connection. If the buzzer cuts out as you wiggle the wires then you've found your short/loose connection. If it's not your wires going to the distributor, then it's your distributor ground wire. Check to see if that's okay too.
As for your Knock Sensor code, (that seems to be common in a lot of S13's & S14's...it's not your sensor), check your ground. It's located on the engine block on the rear driver side portion of the motor, directly above the Oxygen sensor. Best if you just cut the connector & resolder the wires to a new ground grommet. If I recall correctly, a lot of your sensors use the engine block above the O2 sensor as a ground point. You might want to check that ground grommet out real good. Remember...if your motor mounts are old, all the movement from the engine can cause your grounding wires & harness wires to go bad over time. The tugging motion of the motor, (torquing on the mounts as you step on the gas), can short wires out internally..
Anyhow, hope this helps..
ID