So after much research about similar issues I have finally decided to create my own post hoping to find the problem.

Sorry for the long post, just want to be detailed.

2004 350Z Touring

Just recently I boosted my car and then blew my stock engine. I swapped out the bad for another used factory engine and have had an issue since. The car runs a lil rough but throws a code.


P0335,Crankshaft Position Sensor A Circuit Malfunction


But I believe my situation might be a tad different than just swapping out the sensor. I have a friend's 350Z here at my place now to help diagnose the problem but I am running into a issue.

After researching this Code it seems it could be one of three things. The cranks shaft positioning sensor or one of the two camshaft positioning sensors. So I swapped out the Cranks sensor from the good running car to mine because its the easiest but it did not fix the car. So I moved on to the Passenger side cam sensor because it is the easiest to get to and that is were I have been hung up.

Ever since I swapped out the motor I have doubted the CONNECTOR that is plugged into this same sensor. It goes on fine but DOES NOT click on. I can move the clip in and out but it doesn't seem to be doing its job. I don't want to harm the harness on the running car taking this off to swap out.

My question is:
Does anyone else think the plug for the passenger side cam positioning sensor is causing my SES light?

Thanks in advance.

 

This is the connector that I am having issues with



The orange car is the victim to my problems lol

 

Doubtful, the ECU seems to be pretty good about isolating the cam and crank sensor's to throw codes, if you changed the sensor already that leaves wiring, reluctor ring or timing mechanical issue.

 

So you are saying that most likely it could still be one of the cam shaft sensors? Thanks for the reply.

Have you ever had so much trouble getting the the plugs off the camshaft positioning sensors you thought you were going to break them?

 

Did you change or remove the clutch/flywheel while doing the swap?

 

Yes I did, Why do you ask?

 

Where do you think the crankshaft position signal comes from?

 

1. Look up the fsm and refer to the voltage on the sensor.
2.get a DVOM and check the voltage.

Might be a sensor problem or wiring. Have tried resetting the ses light and see whether it comes on again?

 

I have reset the SES light with my Cipher several times and it has always came back.



Neimad- I'm not sure how your reply helps me? Thank you though

 

Theres a ring on the flywheel that the magnet in the ckp uses to count crankshaft revolutions , you need to make sure the ckp is getting that by backprobing the harness connector and checking the on/off pulse. Ill explain more tomorrow and get you a code flowchart from ALLDATA

 

Okay sounds good, am I able to perform this procedure with a multimeter?

 

Okay I count get much done yesterday because of the rain but that turned into me doing some more research about other people's problems with their flywheel alignment.

My question is
Since I have an OEM Flywheel (with ACT 6 Puck) is it possible that it is misaligned?

I caught something that is saying the OEM flywheel has one smaller hole that will not allow you to install it improperly. After inspecting my spare used OEM flywheel I couldn't see what they were referring to.

Here is a pic of my spare.





Are these the notches that the sensor reads off of? (the one installed in my Z now does not have this same surface rust)

 

Sorry, difficulties getting to the computer with ALLDATA but here you go

 

Those should be the timing marks that the sensor reads. The flywheel must be installed onto the crank properly for the feedback from the sensor to make sense to the ECU.

 

This is some good info guys. Thanks a lot. Will tackle this stuff tomorrow after class.

 

Okay I believe I have found my problem. After doing some research and some mock up with blown engine and spare flywheel. I was attempting to compare flywheel alignment with the other Z I have been using to trouble shoot. I "attempted" this by putting both engines at TDC, took the small flywheel cover off both transmissions and see if I could find so alike markings. This did not work for me because there wasn't much to see.

So I starting taking a closer look at the spare flywheel I have and I hopefully have the answer.

Does the small dowel pin, marked with white out, go in the small hole in the flywheel that is also marked with white out??

 

Hi I know this is a old thread but i am having the same problem and am wondering the samething about the hole you have circled on the flywheel. I sthat the correct hole for the dowel pin to go into?

 

99% yes. I don't have stock flywheel clutch either, and haven't looked at this in a while, but if you look at it... there's no place else that it makes sense to align, everything else is symmetrically spaced except that single hole.

 

You have to align it the same as where it was removed. Cars that have a dowel like that make it easy, but you should always mark it otherwise. The crank position trigger wheel on the flywheel has to be in the same orientation in reference to the crank position or you will have issues.