My lnf is throwing a p0336 code i changed out the crank position sensor nothing. Also checked the timing on the car perfect. I pulled the harness from the crank position sensor pulled the loom checked the wires perfect cleaned the plugs out on the harnesses with air. Still my car will not run at all. I go to start it and it keeps trying to turn over then once it does the car will idle terribly from 500-1200 about and then will die. Im totally out of ideas to what it could be. Anyone have any ideas?

EDIT went and put my battery on a charger for 4 hours says it was fully charged still hooked up to the charger i tried to start the car and it automatically died...could it be my battery causing this maybe. Also is there a fuse for the crank position sensor that may be blown
Also someone said it could be my reluctor wheel i believe they called it...i know thats on the crankshaft how would i even check to see if the teeth are missing or broken

EDIT- Went and looked up the code in a gm manual for our cars it states

Primary malfunction signal and criteria-p0336 unexpected re-synchronization> loss of reference mark

Is that just a technical way of saying the car needs a relearn?

VIDEO

 

Did you do the crank position sensor relearn?

 

No I was told the car would run normal if i didnt do the relearn and it would still drive. Its doing the exact same thing my car did before the replacement crank sensor so it made me think something else is wrong

 

Your car still thinks you have the old crank sensor installed. That's why it's acting the same. You need to do the crank sensor relearn and you'll be fine.

 

Ill have to ask my buddy who tunes he told me the car wouldnt act up like it did before it would run just couldnt beat on it...well see soon i guess might have to trailer it to him then

 

http://www.***************/forums/pr...ft-sensor.html

They talk about it on this forum. You have to do a relearn anytime there's a break in the connection for the reluctor wheel to the ecu. But let me know what you find out. I hope this helps and you get your issue resolved.

 

that site is blocked damn...ill just try a relearn and pray to the gods...only bad thing is i cant even get the car to run it shuts off right away so getting it onto a trailer will be fun

 

Try to get someone to come out to you. All you need is a Tech II. I'll see if I can upload the image.

 

I couldn't get the image of the procedure, but I was able to copy and paste.

Crankshaft Position System Variation Learn
Note: The crankshaft position (CKP) system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set:

• Engine replacement

• Engine control module (ECM) replacement

• Crankshaft damper replacement

• Crankshaft replacement

• CKP sensor replacement

• Any engine repairs which disturb the crankshaft to CKP sensor relationship

Procedure for CKP relearn.

Install a scan tool.
Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
With a scan tool, select the CKP system variation learn procedure and perform the following:
3.1. Observe the fuel cut-off for the applicable engine.

3.2. Block the drive wheels.

3.3. Set the parking brake.

3.4. Place the vehicle's transmission in Park or Neutral.

3.5. Turn the air conditioning (A/C) OFF.

3.6. Cycle the ignition from OFF to ON.

3.7. Apply and hold the brake pedal for the duration of the procedure.

3.8. Start and idle the engine.

3.9. Accelerate to wide open throttle (WOT). The engine should not accelerate beyond the calibrated fuel cut-off RPM value noted in step 3.1. Release the throttle immediately if the value is exceeded.


Note: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine control is returned to the operator and the engine responds to throttle position after the learn procedure is complete.


3.10. Release the throttle when fuel cut-off occurs.

The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that DTC P0315 ran and passed, the CKP variation learn procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, refer to DTC P0315. If any other DTCs set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.

 

Interesting if the relearn does fix this. I had a bad CKP and the car was fine after just R&R'ing without a relearn. Wonder what the stipulations are.

 

Yea it's weird. Sometimes it works without needing a relearn. But most the time it needs to be done.

 

i think im just going to cry and quit haha...my buddy said you can just do it with hp tuners..only issue i can even get the car to idle or anything so this relearn kinda seems impossible

 

So it wont even stay running if you give it some throttle?

 

Ya got dem LNF proooblems

 

wont stay running at all no. Ill get a video of it today

 

So put the battery on a charger for 4 hours says fully charged went to start it and it died instantly soon as i went to turn the car on...could a bad battery cause this issue

EDIT- Went and looked up the code in a gm manual for our cars it states

Primary malfunction signal and criteria-p0336 unexpected re-synchronization> loss of reference mark

 

I remember that someone on here had this error and it was one bent tooth on the crank reluctor wheel. I want to say it was the ZZP guys, but I can't be sure. Is your motor a rebuild?

Edit: Just found it. That was nFamous that had the bent teeth.

 

its still a stock motor nothings been touched inside besides the cams

 

Just a random thought but how would the reluctor wheel get damaged if the car has never been apart...I feel like if something is internal and hit my reluctor wheel i have bigger problems other than just a damaged reluctor wheel.

For some reason i want to blame this issue on fueling but then it makes no sense to why i would throw a p0336 code.

 

Yeah, if you're not rebuilt, it's likely not the wheel.

Doesn't the computer use the cam position sensors and crank position sensors together? Maybe the comparison of the two isn't right. Cams timed right after cams put it? I'm just spit-balling, here.

 

i had the cams installed by zzp so im hoping it wasnt anything on their part im guessing its not since they have done this so many times. I changed the sensor nothing/hardwired in the sensor nothing im at a complete stand still right now with this. Someone said maybe it could it be the correlation between cam sensor and crank sensor. This all started after i went to zzp for my cam install it threw the p0336 code and it wouldnt start first try. Id go to start it and the car would attempt for awhile then shut off. But the second try it would start right away

Edit

Took the fuse box of and the connectors underneath one pin was completely bent sideways. I put it back straight and it looks like the pcm fuse went to it. Would this cause the pcm to short possibly? I swapped all my relays and fuses around and still nothing.

 

bump can anyone help

 

i believe im having the same issue right now. i think you need to pull the crankshaft position sensor, rotate it one knotch, and put it back it. This should adjust your timing further in, or out. so if it doesn't start then you know you went the wrong way, if it starts, then you're golden and you should go ahead with the crankshaft relearn procedure.

best of luck!

 

The crankshaft position sensor (CKP) is usually a two wire sensor: a signal and a ground. The CKP sensor consists of (usually) a permanent magnent sensor that is mounted in front of a reluctor (toothed) wheel mounted to the crankshaft.

As the reluctor wheel passes in front of the crank sensor, an A/C signal is produced that varies according to engine speed. The PCM (powertrain control module) uses this A/C signal to interpret engine RPM. Some crank sensors are hall-effect sensors instead of permanent magnent sensors. These are three wire sensors, provided with voltage, ground, and signal. They too have a reluctor wheel with vanes and "windows" that change the voltage signal to the PCM, providing a RPM signal. I will focus on the former, since they are simpler design and more common.

The crankshaft reluctor has a specific number of teeth and the PCM can determine the position of the crankshaft using only this sensor's signature pattern. The PCM uses this sensor to also determine cylinder misfires by measuring the reluctor teeth locations in the CKP sensor signal. In conjunction with the Camshaft position sensor (CMP) the PCM can determine timing of spark and fuel injection. If the PCM senses a loss of CKP sensor signal (RPM signal) even momentarily, P0336 may set.

Symptoms

Symptoms of a P0336 DTC may include:

Intermittent stalling & no start
No start
MIL (Malfunction Indicator Lamp) illumination
Intermittent misfire
Causes

Potential causes of a P0336 code include:

Bad crank sensor
Broken reluctor ring (missing teeth, debris lodged in ring)
Reluctor ring dislodged/stripped from it's stationary location
Wiring harness chafing causing short
Wiring open in CKP circuit
Possible Solutions

Crankshaft sensor problems are at times intermittent and the vehicle may start and run for some time until problem occurs. Try to reproduce the complaint. When engine stalls or if the engine will not start and continue to run, then crank engine while observing RPM reading. If there is no RPM reading, check for a signal coming out of the crank sensor. Using a scope is best, but since most DIYers don't have access to one you may be able to use a code reader or the tachometer to check for RPM signal.

Visually check the CKP harness for damage or cracking in the wiring insulation. Repair as necessary. Make sure the wiring isn't mis-routed near high voltage spark plug wires. Check for loose connection or broken lock at the sensor connector. Repair as necessary. Obtain a resistance spec for the Crank sensor. Remove and check it. If it doesn't pass, replace it. If it checks out okay, check the reluctor ring for damage, broken teeth, or debris lodged in the ring. Make sure the reluctor ring isn't dislodged. It should be stationary on the crankshaft. Carefully repair/replace as necessary. Note: some reluctor rings are located in the bell housing of the transmission or behind the front engine cover and cannot be easily accessed.

If the vehicle intermittently stalls and after stalling you have no RPM signal and you have verified the wiring to the CKP sensor is good, then try replacing the sensor. If that doesn't take care of it, and you can't access the reluctor ring, seek help from an automotive professional.

 

Hope it helps