Well I got the new engine running. It seems to idle OK. When I drive it, it begins skipping even under part throttle. It got progressively worse today. When it starts skipping it will throw a P0336 code (CKP crankshaft position sensor). It doesnt stall, just skip under load. I thought ibhad a spare sensor around, but couldnt find it today. I pulled the sensor out, and there are grooves in it from the reluctor ring. Another thing that concerns me is that the new relucror ring on my eagle crank seems to have a space between the 2 rings where my stock crank didnt have a space. It seems weird to me that I am not having problems at idle, and only when I rev it up, also that it has gotten progressively worse.

 

GM used to sell a washer for the crank sensor problem.It moved the sensor away from the wheel.Make sure the wheel is not loose on the crank.You also need to perform a crank angle relearn.

DTC P0336
Circuit Description
The crankshaft position (CKP) sensor signal indicates the crankshaft speed and position. The CKP sensor circuits are connected directly to the powertrain control module (PCM) and consists of the following circuits:

The 12-volt reference circuit
The low reference circuit
The CKP sensor signal circuit
If the PCM detects that the CKP sensor signal is inconsistent, DTC P0336 sets.

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0336 Crankshaft Position (CKP) Sensor Performance

Conditions for Running the DTC
The engine is cranking or running.
DTC P0336 runs continuously once the above conditions are met.
Conditions for Setting the DTC
The PCM detects that the CKP sensor signal is inconsistent for 3 seconds.

Action Taken When the DTC Sets
The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
Conditions for Clearing the MIL/DTC
The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.
DTC P0336
Step
Action
Values
Yes
No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module Connector End Views
1
Did you perform the Diagnostic System Check – Vehicle?
—
Go to Step 2
Go to Diagnostic System Check - Vehicle
2
Important: If DTC P0335 is also set, diagnose DTC P0335 before proceeding with this DTC.
Observe the Freeze Frame/Failure Records for this DTC.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
—
Go to Step 3
Go to Testing for Intermittent Conditions and Poor Connections
3
Inspect all of the crankshaft position sensor (CKP) circuits for the following conditions:
Wiring routed too closely to secondary ignition wires or components
Wiring routed too closely to after-market add-on electrical equipment
Wiring routed to closely to solenoids, relays, and motors
Electromagnetic interference in the CKP sensor circuits
Did you find and correct the condition?
—
Go to Step 18
Go to Step 4
4
Raise the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the starter. Refer to Starter Replacement.
Disconnect the CKP sensor connector.
Turn ON the ignition, with the engine OFF.
Measure the voltage from the 12-volt reference circuit of the CKP sensor with a DMM.
Is the voltage within the specified value?
B+
Go to Step 8
Go to Step 5
5
Disconnect the CMP sensor connector.
Turn ON the ignition, with the engine OFF.
Measure the voltage from the 12-volt reference circuit of the CKP sensor with a DMM.
Is the voltage within the specified value?
B+
Go to Step 16
Go to Step 6
6
Test the 12-volt reference circuit of the CKP sensor for an open or short to ground. Refer to Circuit Testing and Wiring Repairs.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 7
7
Test the 12-volt reference circuit of the CMP sensor for a short to ground. Refer to Circuit Testing and Wiring Repairs.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 12
8
Test the 12-volt reference circuit for an intermittent condition or shorted to other circuits. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 9
9
Test the low reference circuit for an intermittent condition. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 10
10
Test the CKP sensor signal circuit for an intermittent condition. Refer to Testing for Electrical Intermittents and Inducing Intermittent Fault Conditions.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 11
11
Test for an intermittent and for a poor connection at the CKP sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 13
12
Test for an intermittent and for a poor connection at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 17
13
Remove the CKP sensor. Refer to Crankshaft Position Sensor Replacement.
Inspect the CKP sensor for the following conditions:
Physical damage
Loose or improper installation
Excessive play or looseness
Excessive air gap between the CKP sensor and the reluctor wheel
Foreign material passing between the CKP sensor and the reluctor wheel
Insufficient fuel
Did you find and correct the condition?
—
Go to Step 18
Go to Step 14
14
Inspect the reluctor wheel for the following conditions:
Physical damage
Loose or improper installation
Excessive end play or looseness
Refer to Crankshaft and Bearing Cleaning and Inspection.
Did you find and correct the condition?
—
Go to Step 18
Go to Step 15
15
Replace the CKP sensor. Refer to Crankshaft Position Sensor Replacement.
Did you complete the replacement?
—
Go to Step 18
—
16
Replace the CMP sensor. Refer to Camshaft Position Sensor Replacement.
Did you complete the replacement?
—
Go to Step 18
—
17
Replace the PCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
—
Go to Step 18
—
18
Clear the DTCs with a scan tool.
Turn OFF the ignition for 30 seconds.
Start the engine.
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
—
Go to Step 19
Go to Step 2
19
Observe the Capture Info with a scan tool.
Are there any DTCs that have not been diagnosed?
—
Go to Diagnostic Trouble Code (DTC) List - Vehicle
System OK

 

Tks for the info. I read somewhere that the reluctor should be about .020 away from the sensor. The reluctor had .008 gouges in it. I added a .030 spacer to put it very close to the suggested mark. So far I have not seen an issue, and I have not been able to reproduce the code(knock on wood). I couldnt get one today at a parts store, so I tried mine first. I will run it until I see an issue. Tks again

 

Good luck with this man .