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2002 olds van wiring digram for crank sensor - Oldsmobile Cars & Trucks

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Posted on Dec 20, 2016


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2002 gmc 2500 panel van......engine stalls....code was to change cam sensor....vehicle is fine after sensor is changed however after driving for a few hours , problem of stalling returns,cam sensor has...

Have the crank sensor checked, some times a generic scan tool or code reader will pull a code but list cam sensor and then when code is read with a gm tool it reads crank sensor, can you give me the code #?
you may also have a wiring problem to cam sensor or faulty ecm or bcm. ( computer) engine control module) good day
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Engine stalls while driving

That would be a symptom of a crankshaft postion sensor going bad . Shorting out when heated up . But unfortunately thier are other sensors that can cause the same problem . Plus the ICM - ignition control module could cause that problem as well . OH yea , almost forgot you vehicle has two crankshaft position sensors . You best bet , take it to a qualified repair shop that has the diagnostic tools to trouble shoot the problem .
The electronic ignition (EI) system consists of the following components and wiring circuits:
• The ignition control (IC) module
• The ignition coils
• The powertrain control module (PCM)
• The 24X crankshaft position (CKP) sensor
• The 7X CKP sensor
• The camshaft position (CMP) sensor
The EI wiring circuits listed here use the following service common names. Between the IC module and the PCM:
• Low resolution engine speed signal
• IC timing control
• IC timing signal
• Low reference
Between the 7X CKP sensor and the IC module:
• CKP sensor (1) signal
• Low reference
Between the 24X CKP sensor and the PCM:
• Medium resolution engine speed signal
• 12-volt reference
• Low reference
Between the CMP and the PCM:
• CMP sensor signal
• Low reference
• 12-volt reference
The IC module also receives power and chassis ground through the following circuits:
• Ignition (1) voltage
• Ground

When it stalls check for spark , pull spark plug wires off the same coil an crank the engine . Is thier spark jumping from one coil tower to the other ? Make sure it's a lack of spark problem .

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its a temperature sensor thats connected to a pop off valve its usually in the main wiring harness 16 to 14 guage wire should be sufficient for the repair and make sure u have splice connectors black tape corrodes quickly and could lead to other costly repairs the starting problem sounds like a crank position sensor located on the bottom of the motor

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hope this helps!

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