Chevrolet S-10 Pickup:

Crankshaft Position Sensor

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# 1  2/6/2012 7:49 PM

Barlow
New member
Registered: 2/6/2012
Posts: 1

Crankshaft Position Sensor

Can you tell me the location of the crankshaft position sensor on my 2002 S10 with the 4.3 motor?

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# 2  2/6/2012 9:11 PM

TechHelp2
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Registered: 11/24/2009
Posts: 1305

Re: Crankshaft Position Sensor

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The crankshaft position sensor is at the bottom of the timing cover next to the crankshaft vibration damper. After you install the sensor a relearn procedure needs to be done. It is listed below.

CRANKSHAFT POSITION VARIATION LEARN PROCEDURE:

The crankshaft position sensor is at the bottom of the timing cover next to the crankshaft vibration damper. After you install the sensor a relearn procedure needs to be done. It is listed below.

CRANKSHAFT POSITION VARIATION LEARN PROCEDURE:

Install a scan tool.
With a scan tool, monitor the powertrain control module (PCM) for diagnostic trouble codes (DTCs). If other DTCs are set, except DTC P1336, refer to Diagnostic Trouble Code (DTC) List for the applicable DTC that set.

With a scan tool, select the crankshaft position (CKP) variation learn procedure.
Observe the fuel cut-OFF for the engine that you are performing the learn procedure on.

The scan tool instructs you to perform the following:

Block the drive wheels.
Apply the vehicles parking brake.
Cycle the ignition from OFF to ON.
Apply and hold the brake pedal.
Start and idle the engine.
Turn OFF the A/C.
Place the vehicles transmission in Park (A/T) or Neutral (M/T).
The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
CKP sensor activity - If there is a CKP sensor condition, refer to the applicable DTCs that set.

Camshaft position (CMP) sensor activity - If there is a CMP sensor condition, refer to the applicable DTCs that set.

Engine coolant temperature (ECT) - if the ECT is not warm enough, idle the engine until the ECT reaches the correct temperature
.
With the scan tool, enable the CKP system variation learn procedure.

IMPORTANT: 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 (TP) after the learn procedure is complete.

Slowly increase the engine speed to the RPM that you observed.
Immediately release the throttle when fuel cut-OFF is reached.

The scan tool displays Learn Status: Learned this ignition. If the scan tool does NOT display this message and no additional DTCs set, refer to Symptoms - Engine. If a DTC set, refer to Diagnostic Trouble Code (DTC) List for the applicable DTC that set.
Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.


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