Hello fellow Z owners. I am frustrated and confused. I had to replace the engine in my 2003m 350Z, VQ35DE, as I ble my engine back in March. I piurchased a second hand engine with 100,000 kms on the clock and then prceeded to do the swap. Along the way, I have made some improvements, to give a little better performance. I have the plenum spacer, larger injectors, a larger throttle body, air intake and a full twin system exhaust. After spending several weekends doing the sway over, I ran into an issue with thebank 2 cam position sensor plug. It was brittle anf I broke it when I was removing the plug from the sensor. I was abe to get to to connect, but I wasn't sure it was going to be right. On completion of the swap, the engine wouldn't start. It turns over (cranks) but no firing. A friend cam over with a OBDII reader and we found it had a crank sensor error. I then purchased some second hand sensors and a replacement plug for the one I ha broken. I bought the crank and both cam sensors, and still had the same issue.

We then found that there was an error on the cam sensor on bank 2. So after purchasing my own ODDII reader, which gave me the same answer. I cleared the error, but still no firing. I then purchased the Nissan Data Scan II software and cable and was getting the same error. I cleared the error, but it didn't solve the issue. I disconnected the battery, and ran the sSelf Test again and still cam up with the error. I have now been and purchased three new sensors, done the scan again and I have no errors coming up. I have done the reset oand self check process on the car, by letting it do it's own self test, no errors on NDS II, and still all clear.

I still have no firing and I am about to pull out what hair I have left on my head. Apart from taking it to a dealer and finding out what could be wron, has anyone got any other suggestions that I should try before I do that? Please help me, as I am totally pissed with the whole thing.

 

Clearing the code doesn't solve the problem or "trick" the ECU into thinking it's no longer there.

What was the code that kept coming up?

What was the brand/part number of the sensor that you used as a replacement?

 

With all the breathing mods you did, it will run like **** until you get it tuned

 

Good Morning, I didn't just clear the code. I also reset and started again from scratch after I replaces the sensors. The error I had been getting, from memory, was P0335, which is the cam sensor, bank 2.
The sensors I purchased were from a reputable spare parts company here in AU called Repco. They are not original equipment

Cam Bank 1 - Sensor - Camshaft - CSCA514 - By Fuelmiser
Cam Bank 2 - Sensor - Camshaft - CSCA524 - By Fuelmiser
Crank-Crank Angle Sensor - SC294 - By Goss

 

Hi there, I gathered that, but until I can get it started, I have no idea. From what I have been told, it should run okay for me to drive it, but yes it will need a tune

 

Well known they don't like non oem sensors

 

The aftermarket replacement sensors may or may not be your problem, but it's best to go with OEM - either purchase genuine Hitachi or go through a reputable OEM Nissan supplier.