Question about Cars & Trucks
Thinking of replacing battery with new one and check wiring. from crank sensor
P0335 Crankshaft Position Sensor -Circuit Malfunction
Sorry but i think this fault is caused by a build up of residual magnatism in the crankshaft if a later model where the sensor is picking up from the crankshaft through the cylinder block type fitting ,what i do in cases like this is to try reversing the wires on the sensor it might just work although not always depending on make and type of ignition system .On some opel models i refit with parts from a scrapyard the earlier type of sensor which was on the front pulley as this clears the fault .Failing which ask at the dealers for help and what they recomend as a dealer mechanic will only work on their models and know them inside out unlike this aging old fleet truck mechanic .Who know very little about the modern advanced electronics used on modern vehicles with encyrption chips built into the cars computers to stop people like me from playing with them
Posted on Jan 23, 2013
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Posted on Jan 02, 2017
The best way is to use a scan tool to clear the codes, that will turn off the light, also disconnecting the battery over night may work, but no completely sure about that, it varies from year to year.
Posted on Sep 23, 2008
I had a problem on my Nissan Xterra 2000. Symptons sound similar. In my case, it ran fine for a while and then suddenly the engine starts to stumble and lose output. At one point it did not even have enough HP to move. Irregular idling too. Thought it was water in my fuel. Bought water remover from the store and added to gas tank. Problem did not go away. Instead, "Service Engine Soon" light came on. Had to have it towed to the dealer as there was no way the engine could keep up with traffic. Dealer replaced the "Crank Position Sensor" today. Parts $33.00, Labor: $300 (about 3 hrs worth of work). Seems to work fine now but I will wait and see. Dealer also stated that Distributor bearing appears to be noisy and will need to be replaced sooner or later. I will wait for it to go before I fix that.
Posted on May 27, 2009
Crankshaft and Camshaft Position Sensors
Camshaft Position Sensor
Engine timing is determined from the relationship between the crankshaft and camshaft. This relationship is maintained by a timing chain or timing belt. The Engine Management System does not control engine timing but it does monitor the relative position and speed of these shafts by monitoring signals generated by sensors. The Engine Management System (EMS) uses signals generated by the camshaft position sensor to synchronize fuel injection to the valve sequence and for the on-board diagnostic procedure for misfire detection. The EMS energizes the injector at or near the time the intake valve opens. For misfire diagnosis, the EMS compares the number of camshaft sensor reference pulses and the number of crankshaft position sensor reference pulses received. If the EMS receives an incorrect number of pulses Diagnostic Trouble Codes (DTC’s) should be stored in the EMS.
If the camshaft position sensor or circuit is faulty most engines will start. Some engine management systems will then default to a pre-programmed injector firing sequence. All injectors may be energized simultaneously or all of the injectors on one bank may be energized at the same time. If the CMP data is required for misfire detection and reliable CMP data is not present misfire detection would probably be suspended.
Related Symptoms The following symptoms can be caused by an intermittent wiring connection or faulty signal to the EMS:
In addition the EMS uses minute variations in the CKP sensor data to determine engine misfire. The EMS uses this information in conjunction with the camshaft position sensor to perform misfire diagnostics.
Related Symptoms: No Start/Intermittent Start Condition – Can be caused by a faulty crankshaft position sensor due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit
Posted on Jun 23, 2009
Posted on Jun 18, 2010
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