What was the trouble code with the original transmission? If it is the same code, you could have a wiring or control problem, or the replacement transmission is bad.
When you bought the transmission online, what was the warranty given for the trnsmission? Get back to them about the problem, a possibility they have to get you another unit.
Here are the diagnostic procedures.
DTC P0730: PROBLEM IN SHIFT CONTROL SYSTEM
Keep these replacement solenoid valves on hand:
? Shift solenoid valves A, B, and C
? A/T clutch pressure control solenoid valves A and B
1. Check whether the OBD II scan tool indicates another code.
Does the OBD II scan tool indicate another code?
YES - Perform the troubleshooting flowchart for the indicated code(s). Recheck for code P0730 after troubleshooting.
NO - Go to step 2.
NOTE: Do not continue with this troubleshooting until the causes of any other DTCs have been corrected.
2. Measure the 1st, 2nd, 3rd, 4th, and 5th clutch pressure.
Is each clutch pressure within the service limit?
YES - Go to step 3.
NO - Repair the hydraulic system as necessary.
3. Replace the shift solenoid valve B.
4. Replace the shift solenoid valves A and C.
5. Replace the A/T clutch pressure control solenoid valves A and B.
6. Turn the ignition switch OFF, and reset the PCM memory by removing the BACK UP fuse in the passenger's under-dash fuse/relay box for more than 10 seconds.
7. Calibrate the engine idle control system in the PCM, see PCM Idle Learn Procedure, and drive the vehicle at a speed over 12 mph (20 km/h) in 1st, 2nd, 3rd, 4th, and 5th gear in the [D 5 ] position for more than 30 seconds.
8. Recheck for code P0730.
Does the OBD II scan tool indicate code P0730?
YES - Replace the transmission.
NO - The system is OK at this time.
Wednesday, February 16th, 2011 AT 7:11 PM