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Can you tell me what garage wires used in intake vvt

Customer Question
Hi can you tell...

Hi can you tell me what garage wires used in intake vvt solenoid bank 2

Mechanic's Assistant: Okay, I'll connect you to the mechanic to discuss this further with you. Before I do, is there anything else you want him to know?

I have an 03 350z

Submitted: 10 months ago.Category: Nissan
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Answered in 5 minutes by:
7/28/2017
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 10 months ago
Mechanic01
Mechanic01, ASE Certified Technician
Category: Nissan
Satisfied Customers: 2,710
Experience: Owner at Baltic investments
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Nissan Mechanic: Mechanic01, ASE Certified Technician replied 10 months ago

Hello how can I help you today!!

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Customer reply replied 10 months ago
I need to now the gauge of wire used on the vvt solenoid bank 2
Customer reply replied 10 months ago
2003 350z
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 10 months ago

gauge? as in thickness? what are you trying to do?

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Customer reply replied 10 months ago
There is a short on the wiring as it got frayed and my vvt solenoid is throwing a code for shorting. I am splicing new wire in and the wrong size would mess with resistance
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 10 months ago

it should be a 16 , just dont go lower, ive seen 16 gauge that dosent look like its a 16, use your eyes and make sure its the same or bigger, not all 16 is created equal, I would recommend soldering and heat shrink for that, the connectors cause resistance in the circuit, if its not to far from the connector you can get a new connector and wire harness from nissan and or a junk yard that way you only have one splice. let me know if you have any more questions!

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Customer reply replied 10 months ago
It matches up with 18 gauge actually I used that soldered in but car still sputtering. Would you be able to tell me what color the vvt wires actually are? Or send me a wiring diagram?
Customer reply replied 9 months ago
Ok thanks. I found a salvaged Z and got another vvt connector and it is still throwing the code and sputtering. I am going to try and replace the solenoid itself now. But for now these are the codes it is throwingP1134
P0455
P0021
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

ok let me know how that goes and we can go from there

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Customer reply replied 9 months ago
Ok so I took out old solenoid and tried with the car ignition on and it was not reacting. So I see that blue and hstuff it's wire that I'm assuming is power is sparking, and the white and green wire was not until I touched it with a grounded portion of the timing cover. So assuming that the wire from harness has a bad ground, I attached that wire back to the solenoid and then bolted it onto the timing cover. Solenoid now reacts. Start the engine and it's very rough idle with slight knocking only at idle. Sputtering came back after a quick drive. I run the codes again and instead of vvt, the code is now 0300 -engine misfire. I unplugged the solenoid while engine on and it's smooth idle.
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

those harnesses are known for rubbing, I would make sure your wires are good.

1. Check the engine oil level and condition. If the engine oil is low, it could set this code.

2. Check scan data for the Intake Valve Timing (IVT) degrees on bank 2. The PID will be displayed as INT/V TIM. Look for around 0° +/- 5° at idle. The degrees should go up on acceleration. Compare bank 2 to bank 1.

3. Unplug the bank 2 IVT control solenoid valve and turn the key on, check the voltage on the two wires of the solenoid connector to determine which one is the power supply wire to the solenoid. The other wire will be the ground wire controlled by the Engine Control Module (ECM).

4. With the engine idling, backprobe and ground the bank 2 IVT control solenoid valve ground wire for a few moments and check if the engine speed drops and runs rough. If so, the solenoid and camshaft sprocket are working. If not, the solenoid could be stuck.

5. The resistance of the IVT solenoids is 7.5 ohms at 70° F.

The Engine Control Module (ECM) sends on/off pulse signals to the Intake Valve Timing (IVT) Control Solenoids to vary the intake valve timing depending on the driving status. The ECM monitors the intake camshaft positions to verify that the camshafts are where they are commanded to be.

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Customer reply replied 9 months ago
since I grounded the wire mechanically elsewhere do you think it's opening and closing the solenoid sporadically? You say the ECM controls that I have heard ppl with this wire go bad that it fries the ecm could that be an issue?
Customer reply replied 9 months ago
Solenoid I can see is working when I ground it but it is just opening and closing quickly. I assume the ECM would control how it opens and closes?
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

yes it does it tells the sprocket where to be for better acceleration. and a smoother rpm band, and the wires end up rubbing on the engine and other various spots in the harness and cause all sorts of problems.

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Customer reply replied 9 months ago
do you think the ecu may have shorted when I plug it in? Unplugged I'm assuming it tries to just run of a preprogrammed map, with it plugged in and externally grounded it seems the solenoid is working randomly.
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

I wouldnt rule that as a problem yet, You would see more codes if it were a ecm, I would check the wiring and make sure everything is ok on that front, a small nick or rub is easy to miss

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Customer reply replied 9 months ago
How far back do I have to go to find it?
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

I would just do a full inspection for as much as you can get to, Ive seen weird things with those harnesses over the years

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Customer reply replied 9 months ago
Well here's the thing, I bought the car with another connector for the solenoid already spliced in. So I'm guessing something happened where there was a short and he rewired a new connector. It's more likely that he didn't just randomly choose a spot in the harness to splice to right? That one short that happened could've fried the portion of the ecu that controls the solenoid no?
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

it could have fried the ecm yes

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Customer reply replied 9 months ago
Ok last question I promise, can you look up the two character code for the ecm since each year and models make a difference?
Customer reply replied 9 months ago
Some say PC some say G9 and so on
Nissan Mechanic: Mechanic01, ASE Certified Technician replied 9 months ago

It shouldnt matter because your going to have to program it to that vehicle, if you dont plan on programing it you have to get a bcm and pcm but I dont know how long that would last with out the programing

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