D16z6 Swap help. (wont rev past 3k)

We may earn a small commission from affiliate links and paid advertisements. Terms


New Member
Just swapped in a z6 into my 94 cx hatch. Starts fine, runs ok at idle, wont rev past 3k rpms. Timing is correct, Map sensor is good, TPS sensor is good, New distributor, New o2 sensor, p28 ecu is good. fuel pump is good along with the filter. new spark plugs. Engine harness off an 95 ex civic.

Only cel code i am getting is code 4 (crank angle sensor)
Drop test on injectors showed 4&3 have 14 psi drop 2 has 13 psi and 1 has 11.

Looking for any help at all, this thing is stumping me badly.. could the injectors be causing this.. and how can i check or fix the code 4 problem.. thanks


It appears the Crankshaft Position Sensor (CKP) has gone, as indicated by a Code 4. This common on Honda distributors with higher mileage. The CKP sensor is unserviceable; therefore, you need to replace the distributor housing. I recommend that you buy a genuine Honda housing and install your old Ignition Control Module (ICM) and coil. Have the ICM tested, because the bouncing tachometer rpm readings can be indicative of a bad control module.