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How many teeth does a crankshaft position sensor rotor have

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The only one that works is the longer one ,some vehicles count the teeth in the computer for the speed like the ABS but the crank sensor only needs one but again this depends on the set up of the system in relation to type of computer ,some will automaticly time up the engine and some older systems need a pulse for every cylinder

Posted on Apr 09, 2015

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Posted on Jan 02, 2017

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Where is the crankshaft sensor position located on a 2004 V8 Nissan Armada


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Where is the crankshaft position sensor on 2006 Nissan Sentra 1.8s?


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Where is the crankshaft position sensor located on


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Error Code P0315 on 2007 Chevy Aveo


P0315 - Crankshaft Position System Variation Not Learned

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I have a 2002 chevy silveroda . I need to find the location of the crankshaft position sensor


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Where is the crankshaft sensor location on lanos 2001 ? I changed my camshaft position sensor and the timing belt, but the engine light still on with the same code and the mechanic said it's the...


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stevenhurc_26.jpg

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1 Answer

Hey i just helped my friend put a motor in is 99 gt, it turns over but no spark from the coils, ive tried eveything i can think of and still nothing


what motor?

Is the PCM power relay activating? If yes, you should hear the fuel pump hum for 5 seconds when the key is turned to ON.

If yes, then check the crankshaft position sensor and camshaft position sensors to be sure they have output to the PCM.

The crankshaft position sensor:
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  • is essential for calculating spark timing.
Crankshaft Position Sensor (Integrated Ignition Systems) The crankshaft position (CKP) sensor is a magnetic transducer mounted on the engine block adjacent to a pulse wheel located on the crankshaft. By monitoring the crankshaft mounted pulse wheel, the CKP is the primary sensor for ignition information to the powertrain control module (PCM). The trigger wheel has a total of 35 teeth spaced 10 degrees apart with one empty space for a missing tooth. The 6.8L ten cylinder pulse wheel has 39 teeth spaced 9 degrees apart and one 9 degree empty space for a missing tooth. By monitoring the trigger wheel, the CKP indicates crankshaft position and speed information to the PCM. By monitoring the missing tooth, the CKP is also able to identify piston travel in order to synchronize the ignition system and provide a way of tracking the angular position of the crankshaft relative to fixed reference (Figure 23) .


Camshaft Position Sensor The camshaft position (CMP) sensor detects the position of the camshaft. The CMP sensor identifies when piston No. 1 is on its compression stroke. A signal is then sent to the powertrain control module (PCM) and used for synchronizing the firing of sequential fuel injectors. The Coil On Plug (COP) Ignition applications also use the CMP signal to select the proper ignition coil to fire. The input circuit to the PCM is referred to as the CMP input or circuit.
There are two types of CMP sensors: the three pin connector Hall-effect type sensor (Figure 20) and the two pin connector variable reluctance sensor (Figure 21).



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Has trouble turing over at start


Looks like an easy job.

Crankshaft Position Sensor: Description and Operation
CKP SENSOR (POS)
Component Description
The crankshaft position sensor (POS) is located on the cylinder block rear housing facing the gear teeth (cogs) of the signal plate at the end of the
crankshaft. It detects the fluctuation of the engine revolution.
The sensor consists of a permanent magnet and Hall IC. When the engine is running, the high and low parts of the teeth cause the gap with the sensor
change.
The changing gap causes the magnetic field near the sensor to change.
Due to the changing magnetic field, the voltage from the sensor changes.
The ECM receives the voltage signal and detects the fluctuation of the engine revolution.

Sep 02, 2009 | 2002 Nissan Altima

1 Answer

Car wont start


It sounds like this could be a common problem - usually this is caused by the crank sensor going out/bad. The sensor is mounted to the timing cover on the front of the engine.
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The rotor has 60 tooth positions set at intervals with three teeth missing. The gaps identify the TDC position of the 6 cylinders during one complete engine cycle (two crankshaft revolutions). The rotor thus provides both engine speed and crankshaft position information to the ECM. The missing pulses identify crankshaft position. Each tooth pulse after the missing pulse represents of crankshaft rotation. Thus the frequency of the toothed pulses are a measure of engine speed.
2007-09-20_091035_jag.gif

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