Question about 2000 Saturn SL

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Code 300 the engine dose not runs steady,first code said crank position sencor bad so i changed it,no change in performance,codethen said cam position sencor bad, it dosnt have one, s ichanged the module which is cliped to the 2 coil pack,result the same, i changed the knock sencer the spark plugs ,the spark plug leads and fuel filter the,result the same.i dont know what to change next,any sugestion is greatly aprecited.

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These have a lot of problems with the ignition coils. In darkness look at the coils for any signs of stray spark. If stray spark is present the coils need to be replaced. Note- Use extreme caution around moving engine parts! Do not attempt this if you cannot do so safely.

Give me an update and we'll continue as necessary.

Posted on Nov 17, 2008

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Posted on Jan 02, 2017

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2001 ford taurus 3.0 ohv cam shaft sencor location


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04 buick ranier rough idle almost stalls


DTC P0016 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
The crankshaft position sensor (CKP) and Camshaft position sensor (CMP) work in harmony to control the spark/fuel delivery and timing. They both consist of a reluctor, or tone, ring which passes over a magnetic sensor, which generates a voltage, indicating position.

The crankshaft sensor is part of the primary ignition system and functions as the "trigger". It detects the position of the crankshaft relays that information on to the PCM or the ignition module (depending on the vehicle) to control spark timing. The Camshaft position sensor detects the position of the camshafts and relays the information to the PCM. The PCM uses the CMP signal to identify the beginning of the injector sequence. What ties these two shafts and their sensors together is the timing belt or chain. The cam and crank should be precisely timed together. If the PCM detects that the Crank and Cam signals are out of time by a specific number of degrees, this P0016 code will set.

Symptoms of a P0016 will or may include:
Malfunction Indicator Lamp (MIL) illumination
The engine may run but with reduced performance
The engine may crank but not start
The engine may exhibit a rattle near the harmonic balancer indicating the tone ring is damaged
The engine may start and run, but poorly

Causes may include:
Timing chain stretched, or timing belt skipped a tooth due to wear
Misalignment of timing belt/chain
Tone ring on crankshaft slipped/broken
Tone ring on camshaft slipped/broken
Bad crank sensor
Bad cam sensor
Damaged wiring to crank/cam sensor
Timing belt/chain tensioner damaged

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Nov 15, 2011 | 2004 Buick Rainier

1 Answer

Erreur p0016 on sienna 2003 after change t-belt


The crankshaft position sensor (CKP) and Camshaft position sensor (CMP) work in harmony to control the spark/fuel delivery and timing. They both consist of a reluctor, or tone, ring which passes over a magnetic sensor, which generates a voltage, indicating position.

The crankshaft sensor is part of the primary ignition system and functions as the "trigger". It detects the position of the crankshaft relays that information on to the PCM or the ignition module (depending on the vehicle) to control spark timing. The Camshaft position sensor detects the position of the camshafts and relays the information to the PCM. The PCM uses the CMP signal to identify the beginning of the injector sequence. What ties these two shafts and their sensors together is the timing belt or chain. The cam and crank should be precisely timed together. If the PCM detects that the Crank and Cam signals are out of time by a specific number of degrees, this P0016 code will set.

Symptoms of a P0016 will or may include:
* Malfunction Indicator Lamp (MIL) illumination
* The engine may run but with reduced performance
* The engine may crank but not start
* The engine may exhibit a rattle near the harmonic balancer indicating the tone ring is damaged
* The engine may start and run, but poorly

Causes may include:
* Timing chain stretched, or timing belt skipped a tooth due to wear
* Misalignment of timing belt/chain
* Tone ring on crankshaft slipped/broken
* Tone ring on camshaft slipped/broken
* Bad crank sensor
* Bad cam sensor
* Damaged wiring to crank/cam sensor
* Timing belt/chain tensioner damaged

Possible Solutions:
1. First, visually inspect the cam and crank sensors and their harnesses for damage. If you notice broken/frayed wires, repair and recheck.
2. If you have access to a scope, check the cam and crank patterns. If a pattern is missing, suspect a bad sensor or a slipping tone ring. Remove the cam gear and the crankshaft harmonic balancer and inspect the tone rings for proper alignment and make sure they're not loose or damaged or that they haven't sheared the key that aligns them. If they are properly installed, replace the sensor.
3. If the signal appears normal, then check the timing chain/belt for proper alignment. If it's misaligned, check for a damaged tensioner that may have allowed the chain/belt to slip a tooth or several teeth. Also check that the belt/chain isn't stretched. Repair and recheck.

Other crank sensor codes include P0017, P0018, P0019, P0335, P0336, P0337, P0338, P0339, P0385, P0386, P0387, P0388, and P0389.

Hope helps.

Dec 20, 2010 | 2003 Toyota Sienna

1 Answer

Was told cam postion sencor might be bad? Replace not it! now was told my autozone guy might be crank sencor? But need a pix or something i can't find it? your help is needed! Thank you Darren


well i dont know what year is but the crank position sensor is locate it behind crank pulley in order to have acces to the sensor you ne to remove the pulley first. Note when the crank sensor is bad there should be no fire at your sparks. before keep spending more money dont know if you checked for gas coming to the engine.

Sep 18, 2010 | Ford Escort Cars & Trucks

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Can a faulty cam position sensor cause a car to not fire when it warms up


No. A bad cam sensor usually causes a long crank before firing and a check engine light on steady with a code 41.

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