Quote Originally Posted by pellucid View Post
Hello all. There were some delays along the way but the car is not almost running and I'm hoping someone here can point me in the right direction.

I've installed the new (used) engine and everything is hooked, plumbed and filled. Somewhere I'd seen a "learn" procedure for installing a new engine but I haven't been able to find it again. Today I decided that if it will start and idle it's probably smart enough to adapt itself to a different throttle body and sensors. Well... it won't.

After a few cranks it fired up and died out. I'm assuming those first 2-3 cranks were mostly purging air from the fuel rail. Over the next few starts it got slightly better but not enough to run. It still start and go up to about 2,000rpm (sounds smooth) but quickly dies out after a few seconds. If I hold the throttle pedal fully down it will bump along with a lot of misses at 4-500rpm but it doesn't seem to be "learning" anything and so I came back here for some help.

Some info. This car is a 5spd, the donor engine was from an automatic so I had to swap over the original engine harness for the reverse switch and...whatever that other sensor on the 5spd is near the shift linkage.

I think the car had a coil pack update under recall and I'm about to swap coils with the idea that maybe there was an ECU flash that makes it incompatible with the older style coil pack.

Thanks in advance for any help! I really want to get this out of the garage and back in my friend's hands!
i had a look in my Digital Factory Service Manual, and found this:

Crankshaft Position System Variation Learn
Note: The crankshaft position (CKP) system variation learn procedure is required when the
following service procedures have been performed, regardless of whether DTC P0315 is set:
Note: The scan tool monitors certain component signals to determine if all the conditions are met
to continue with the CKP system variation learn procedure. The scan tool only displays the
condition that inhibits the procedure. The scan tool monitors the following components:
1. Install a scan tool.
2. Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to
Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
3. With a scan tool, select the CKP system variation learn procedure and perform the following:
4. The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that
DTC P0315 ran and passed, the CKP variation learn procedure is complete. If the scan tool
indicates DTC P0315 failed or did not run, refer to DTC P0315. If any other DTCs set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
• Engine replacement
• Engine control module (ECM) replacement
• Crankshaft damper replacement
• Crankshaft replacement
• CKP sensor replacement
• Any engine repairs which disturb the crankshaft to CKP sensor relationship
• CKP sensor activity--If there is a CKP sensor condition, refer to the applicable DTC that set.
• Camshaft position (CMP) signal activity--If there is a CMP signal condition, refer to the
applicable DTC that set.
• Engine coolant temperature (ECT)--If the engine coolant temperature is not warm enough,
idle the engine until the engine coolant temperature reaches the correct temperature.
3.1. Observe the fuel cut-off for the applicable engine.
3.2. Block the drive wheels.
3.3. Set the parking brake.
3.4. Place the vehicle's transmission in Park or Neutral.
3.5. Turn the air conditioning (A/C) OFF.
3.6. Cycle the ignition from OFF to ON.
3.7. Apply and hold the brake pedal for the duration of the procedure.
3.8. Start and idle the engine.
3.9. Accelerate to wide open throttle (WOT). The engine should not accelerate beyond the
calibrated fuel cut-off RPM value noted in step 3.1. Release the throttle immediately if
the value is exceeded.
Note: While the learn procedure is in progress, release the throttle immediately when
the engine starts to decelerate. The engine control is returned to the operator and the
engine responds to throttle position after the learn procedure is complete.

3.10. Release the throttle when fuel cut-off occurs.
4. The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that
DTC P0315 ran and passed, the CKP variation learn procedure is complete. If the scan tool
indicates DTC P0315 failed or did not run, refer to DTC P0315. If any other DTCs set, refer to
Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
5. Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.