Question about 1996 Oldsmobile Silhouette

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1997 olds silouette have no spark allready changed the ignition control module ICM and one of the crank shaft position sensor. (24x) one. still no spark pretty sure the 7x crank sensor is good and getting good signal from camshaft sensor. what else could it be i'am lost

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Hi, if your engine cranks normally but will not start because it has no spark, or it stalls and won't restart because it has no spark, the problem may be due to any of the following:
A bad pickup inside the distributor (on engines that have a distributor), a stripped distributor drive gear (common problem with plastic distributor drive gears), broken, loose or corroded wires from the pickup to the ignition module or PCM.
A bad crankshaft position (CKP) sensor (on engines that do not have a distributor), or broken, loose or corroded wires from the sensor to the PCM.
A bad ignition module (on engines that have a distributor or use an ignition module separate from the PCM)
A bad ignition coil (on engines that have a distributor and a single coil) A bad rotor or distributor cap (cracks or carbon tracks that are allowing the spark to short to ground) Faulty ignition switch.

Posted on Mar 11, 2011

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1 Answer

Does a 2004 chevy venture van have a coil pack?


Your Van ? Yes it does !
• Ignition control module (ICM) and ignition coils
Three dual tower ignition coils are mounted to the ICM, and are serviced individually. The ICM performs the following functions:
- The ICM receives and processes the signals from the CKP sensor B.
- The ICM determines the correct direction of the crankshaft rotation, and cuts spark and fuel delivery to prevent damage from backfiring if reverse rotation is detected.
- The ICM determines the correct coil triggering sequence, based on the 7X CKP signal. This coil sequencing occurs at start-up, and is remembered by the ICM. After the engine is running, the ICM will continue to trigger the coils in the correct sequence.
- The ICM produces and inputs 3X reference signals to the PCM.
- The ICM contains the coil driver circuits that command the coils to operate.
• Crankshaft position (CKP) sensors
The CKP sensor B is a variable reluctance sensor. The magnetic field of the sensor is altered by a crankshaft mounted reluctor wheel that has seven machined slots, six of which are equally spaced 60 degrees apart. The seventh slot is spaced 10 degrees after one of the 60 degree slots. This sensor provides the ignition control module (ICM) with 7X signals, or seven pulses for each revolution of the crankshaft. The pulse from the 10 degree slot is known as the sync pulse. Both of the sensor circuits are connected to the ignition control module (ICM). A signal converter within the ICM produces digital 3X output pulse to the powertrain control module (PCM), the 3X reference is known as the low resolution engine speed signal.
The CKP sensor A contains a hall-effect switch. A hall-effect switch is a solid state switching device that produces a digital ON/OFF pulse when a rotating element passes between the sensor tip and a magnet. This rotating element is called an interrupter ring or blade. In this case the interrupter ring has 24 evenly spaced blades and windows and is part of the crankshaft damper assembly. This sensor provides the PCM with 24X signals, or 24 identical pulses per crankshaft revolution. The 24X signal is used for enhanced smoothness and idle stability at a lower calibrated RPM. The PCM supplies the sensor with a 12-volt reference, low reference, and signal circuit.
• Camshaft position (CMP) sensor
The CMP sensor signal is a digital ON/OFF pulse, output once per revolution of the camshaft. The CMP sensor does not directly affect the operation of the ignition system. The CMP sensor information is used by the PCM to determine the position of the valve train relative to the crankshaft position. By monitoring the CMP and CKP signals the PCM can accurately time the operation of the fuel injectors. The PCM supplies the sensor with a 12-volt reference, low reference, and signal circuit.

Jun 13, 2017 | Cars & Trucks

1 Answer

Where is the crank position sensor,the ignition module,and coil pack at on a 1998 Pontiac Montana transport


What size engine . 3.1 or 3.4 Has two crankshaft position sensors
Crankshaft Position (CKP) Sensor (24X)
RH side of engine at end of crankshaf, behind harmonic balencer
Engine Controls Component Views
Engine Controls Connector End Views
Crankshaft Position (CKP) Sensor (7X)
Lower rear of engine
Ignition Control (IC) Module
Top center rear of engine coils are on top of ICM - ignition control module .

Apr 05, 2017 | Pontiac Montana Cars & Trucks

2 Answers

Is their one or two crank sensors on a 2003 olds alero


What engine does yours have ? 2.2L 4 cyl. or 3.4 L V-6 If you have 3.4 L it has two A an B

• Crankshaft position (CKP) sensors
The CKP sensor B is a variable reluctance sensor. The magnetic field of the sensor is altered by a crankshaft mounted reluctor wheel that has seven machined slots, six of which are equally spaced 60 degrees apart. The seventh slot is spaced 10 degrees after one of the 60 degree slots. This sensor provides the ignition control module (ICM) with 7X signals, or seven pulses for each revolution of the crankshaft. The pulse from the 10 degree slot is known as the sync pulse. Both of the sensor circuits are connected to the ignition control module (ICM). A signal converter within the ICM produces digital 3X output pulse to the powertrain control module (PCM), the 3X reference is known as the low resolution engine speed signal.
The CKP sensor A contains a hall-effect switch. A hall-effect switch is a solid state switching device that produces a digital ON/OFF pulse when a rotating element passes between the sensor tip and a magnet. This rotating element is called an interrupter ring or blade. In this case the interrupter ring has 24 evenly spaced blades and windows and is part of the crankshaft damper assembly. This sensor provides the PCM with 24X signals, or 24 identical pulses per crankshaft revolution. The 24X signal is used for enhanced smoothness and idle stability at a lower calibrated RPM. The PCM supplies the sensor with a 12-volt reference, low reference, and signal circuit.

Mar 01, 2017 | 2003 Oldsmobile Alero

2 Answers

I got a 2001 olds silhouette, 3.4, with p1374. Checked ecm and replaced cps on the side of the block. ran great for about 4 miles, then it started stumbling and then stalling.


DTC P1374
The 3X reference signal is produced by the ignition control (IC) module. The IC module calculates the 3X reference signal by dividing the crankshaft position (CKP) sensor 7X pulses by 2 when the engine is running and when the CKP synchronizing pulses are being received. The powertrain control module (PCM) uses the 3X reference signal to calculate the engine RPM and the crankshaft position at engine speeds above 1600±150 RPM. The PCM also uses these pulses to initiate injector pulses. The PCM compares the 3X reference pulses to the 24X CKP pulses and the camshaft position (CMP) sensor pulses. If the PCM receives an incorrect number of pulses on the 3X circuit, a DTC P1374 will set and the PCM will use the 24X CKP reference circuit for fuel and ignition control. The engine will continue to start and run using only the 24X CKP and the camshaft position sensor signals.

Diagnostic Aids
• DTC P1374 can be caused by secondary components leaking high voltage into the IC module.
• Inspect for the following conditions:
- Incorrect harness routing near secondary ignition components
- Ignition coil arcing to wiring harness or IC module--Inspect the ignition coils for the following conditions:
• Cracks
• Carbon tracking
• Other signs of damage
- Ignition coil arcing to wiring harness or IC module--Inspect the ignition coils for the following conditions:
- Secondary ignition wires arcing to wiring harness
I would sugest you take your vehicle to a qualified repair shop an have it diagnosed , but i can tell that's not your way , is it . We diagnose not replace part's .
Replace the IC module. Refer to Ignition Control Module Replacement .
Did you complete the replacement?
Go to Step 11
--
10
Replace the PCM. Refer to Powertrain Control Module Replacement .
Did you complete the replacement?
Go to Step 11
If it starts an runs it's not the crank sensor behind the crankshaft pulley .

May 31, 2016 | 2001 Oldsmobile Silhouette

1 Answer

Yes i have a 2000 Monte Carlo 3.4 SFI VIN E and it has been stalling after starting i had to press the accelerator to keep the rpms up to 2500 to keep the vehicle running. i have recently just replace and...


you need to use scanner equipped with live data--go to live data look for crank signal 24x--if 0--get schematics check inputs to sensor--possibly wiring issue

Oct 01, 2013 | 1997 Chevrolet Monte Carlo

1 Answer

What does acam or crankshaft sensor do


  • The crankshaft position sensor identifies position of the crankshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown.
  • The camshaft position sensor identifies position of the camshaft to the ignition control module (ICM), engine control module (ECM) or powertrain control module (PCM)
  • When not replaced, vehicle could experience no- or hard start, long crank time, misfire, lack of power, excessive hydrocarbons in oil, spark plug fouling, catalytic converter failure, poor fuel economy, CEL/MIL illumination or intermittent shutdown
  • Jul 24, 2012 | Cars & Trucks

    1 Answer

    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 .

    Mar 26, 2017 | 2002 Chevrolet Venture Passanger

    1 Answer

    Where is the ignition module. Can I get to it from under the hood? Should I replace the Crank module when I replace the ignition module?


    Hi.

    The ICM is located under the hood, next to the coil pack and spark plug wires. Here the part: Pontiac Grand Am Ignition Control Module (ICM).

    If you ar having distribution problem and misfire check also the crankshaft position sensor. It signal is used to control coils and sparks.

    Aug 29, 2011 | 1989 Pontiac Grand Am

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